void identify_psrdatatype(struct spectra_info *s, int output)
{
char *root, *suffix, ctmp[40];
/* Split the filename into a rootname and a suffix */
if (split_root_suffix(s->filenames[0], &root, &suffix) == 0) {
fprintf(stderr, "Error!: The input filename (%s) must have a suffix!\n\n",
s->filenames[0]);
exit(1);
} else {
if (strcmp(suffix, "dat") == 0) s->datatype = DAT;
else if (strcmp(suffix, "sdat") == 0) s->datatype = SDAT;
else if (strncmp(suffix, "sub0", 4) == 0) s->datatype = SUBBAND;
else if (strcmp(suffix, "events") == 0) s->datatype = EVENTS;
else if (strcmp(suffix, "bcpm1") == 0 ||
strcmp(suffix, "bcpm2") == 0) s->datatype = BPP;
else if (strcmp(suffix, "fil") == 0 ||
strcmp(suffix, "fb") == 0) s->datatype = SIGPROCFB;
else if ((strcmp(suffix, "fits") == 0) ||
(strcmp(suffix, "sf") == 0)) {
if (strstr(root, "spigot_5") != NULL) s->datatype = SPIGOT;
// else if (is_PSRFITS(s->filenames[0])) s->datatype = PSRFITS;
else s->datatype = PSRFITS;
}
else if (strcmp(suffix, "pkmb") == 0) s->datatype = SCAMP;
else if (isdigit(suffix[0]) &&
isdigit(suffix[1]) &&
isdigit(suffix[2])) s->datatype = WAPP;
else s->datatype = UNSET;
}
psrdatatype_description(ctmp, s->datatype);
if (output) printf("Assuming the data are %s format...\n", ctmp);
free(root);
free(suffix);
}
int determine_padvals(char *maskfilenm, mask * obsmask, float *padvals[])
/* Determine reasonable padding values from the rfifind produced */
/* *.stats file if it is available. Return the allocated vector */
/* (of length numchan) in padvals. Return a '1' if the routine */
/* used the stats file, return 0 if the padding was set to aeros. */
{
FILE *statsfile;
int ii, numchan, numint, ptsperint, lobin, numbetween;
float **dataavg, tmp1, tmp2;
char *statsfilenm, *root, *suffix;
if (split_root_suffix(maskfilenm, &root, &suffix) == 0) {
printf("\nThe mask filename (%s) must have a suffix!\n\n", maskfilenm);
exit(1);
} else {
/* Determine the stats file name */
statsfilenm = calloc(strlen(maskfilenm) + 2, sizeof(char));
sprintf(statsfilenm, "%s.stats", root);
free(root);
free(suffix);
*padvals = gen_fvect(obsmask->numchan);
/* Check to see if the file exists */
printf("Attempting to read the data statistics from '%s'...\n", statsfilenm);
statsfile = chkfopen(statsfilenm, "rb");
free(statsfilenm);
if (statsfile) { /* Read the stats */
chkfread(&numchan, sizeof(int), 1, statsfile);
chkfread(&numint, sizeof(int), 1, statsfile);
chkfread(&ptsperint, sizeof(int), 1, statsfile);
chkfread(&lobin, sizeof(int), 1, statsfile);
chkfread(&numbetween, sizeof(int), 1, statsfile);
dataavg = gen_fmatrix(numint, numchan);
/* These are the powers */
chkfread(dataavg[0], sizeof(float), numchan * numint, statsfile);
/* These are the averages */
chkfread(dataavg[0], sizeof(float), numchan * numint, statsfile);
/* Set the padding values equal to the mid-80% channel averages */
for (ii = 0; ii < numchan; ii++)
calc_avgmedstd(dataavg[0] + ii, numint, 0.8, numchan,
*padvals + ii, &tmp1, &tmp2);
printf
("...succeded. Set the padding values equal to the mid-80%% channel averages.\n");
vect_free(dataavg[0]);
vect_free(dataavg);
fclose(statsfile);
return 1;
} else {
/* This is a temporary solution */
for (ii = 0; ii < obsmask->numchan; ii++)
(*padvals)[ii] = 0.0;
printf("...failed.\n Set the padding values to 0.\n");
return 0;
}
}
}
int main(int argc, char *argv[])
{
FILE *infile, *outfile;
int ii, numread;
long long N = 0;
float offset = 0.0, fbuffer[sizeof(float) * BUFFLEN];
short sbuffer[sizeof(short) * BUFFLEN];
char *outname;
if (argc != 2 && argc != 3) {
printf("\nUsage: sdat2dat sdatfilename [offset to add]\n\n");
exit(1);
}
printf("\n Shorts to Floats Data Conversion Program\n\n");
/* Get the root of the input filename and */
/* generate the output filenames from it. */
{
char *rootnm, *suffix;
split_root_suffix(argv[1], &rootnm, &suffix);
outname = (char *) calloc(strlen(rootnm) + 5, sizeof(char));
sprintf(outname, "%s.dat", rootnm);
free(rootnm);
free(suffix);
}
if (argc == 3) {
offset = strtod(argv[2], NULL);
printf(" Converting, adding %g, and writing to '%s'...", offset, outname);
} else {
printf(" Converting the data and writing to '%s'...", outname);
}
fflush(NULL);
infile = chkfopen(argv[1], "rb");
outfile = chkfopen(outname, "wb");
while ((numread = chkfread(sbuffer, sizeof(short), BUFFLEN, infile))) {
N += numread;
for (ii = 0; ii < numread; ii++)
fbuffer[ii] = (float) (sbuffer[ii]) + offset;
fwrite(fbuffer, sizeof(float), numread, outfile);
}
printf("done.\n Wrote %lld points.\n\n", N);
fclose(infile);
fclose(outfile);
free(outname);
exit(0);
}
int main(int argc, char *argv[])
{
float minval = SMALLNUM, maxval = LARGENUM, inx = 0, iny = 0;
int centern, offsetn;
int zoomlevel, maxzoom = 0, minzoom, xid, psid;
char *rootfilenm, inchar;
datapart *lodp;
dataview *dv;
basicstats *statvals;
if (argc == 1) {
printf("\nusage: exploredat datafilename\n\n");
exit(0);
}
printf("\n\n");
printf(" Interactive Data Explorer\n");
printf(" by Scott M. Ransom\n");
printf(" November, 2001\n");
print_help();
{
int hassuffix = 0;
char *suffix;
hassuffix = split_root_suffix(argv[1], &rootfilenm, &suffix);
if (hassuffix) {
if (strcmp(suffix, "dat") != 0) {
printf
("\nInput file ('%s') must be a single PRESTO data file ('.dat')!\n\n",
argv[1]);
free(suffix);
exit(0);
}
free(suffix);
} else {
printf("\nInput file ('%s') must be a PRESTO data file ('.dat')!\n\n",
argv[1]);
exit(0);
}
}
/* Read the info file */
readinf(&idata, rootfilenm);
if (idata.object) {
printf("Examining %s data from '%s'.\n\n",
remove_whitespace(idata.object), argv[1]);
} else {
printf("Examining data from '%s'.\n\n", argv[1]);
}
#ifdef USEMMAP
mmap_file = open(argv[1], O_RDONLY);
{
int rt;
struct stat buf;
rt = fstat(mmap_file, &buf);
if (rt == -1) {
perror("\nError in fstat() in exploredat.c");
printf("\n");
exit(-1);
}
Ndat = buf.st_size / sizeof(float);
}
lodp = get_datapart(0, Ndat);
#else
{
int numsamp;
datfile = chkfopen(argv[1], "rb");
Ndat = chkfilelen(datfile, sizeof(float));
numsamp = (Ndat > MAXPTS) ? (int) MAXPTS : (int) Ndat;
lodp = get_datapart(0, numsamp);
}
#endif
/* Plot the initial data */
centern = 0.5 * INITIALNUMPTS;
if (centern > lodp->nn)
centern = lodp->nn / 2;
zoomlevel = LOGMAXDISPNUM - LOGINITIALNUMPTS;
minzoom = LOGMAXDISPNUM - LOGMAXPTS;
maxzoom = LOGMAXDISPNUM - LOGMINDISPNUM;
dv = get_dataview(centern, zoomlevel, lodp);
/* Prep the XWIN device for PGPLOT */
xid = cpgopen("/XWIN");
if (xid <= 0) {
free_datapart(lodp);
#ifdef USEMMAP
close(mmap_file);
#else
fclose(datfile);
#endif
free(dv);
exit(EXIT_FAILURE);
}
cpgask(0);
cpgpage();
offsetn = plot_dataview(dv, minval, maxval, 1.0);
do {
cpgcurs(&inx, &iny, &inchar);
if (DEBUGOUT)
printf("You pressed '%c'\n", inchar);
switch (inchar) {
case ' ': /* Toggle stats and sample plotting on/off */
/* 0 = both, 1 = stats only, 2 = data only */
plotstats++;
plotstats = plotstats % 3;
cpgpage();
offsetn = plot_dataview(dv, minval, maxval, 1.0);
break;
case 'M': /* Toggle between median and average */
case 'm':
usemedian = (usemedian) ? 0 : 1;
free(dv);
dv = get_dataview(centern, zoomlevel, lodp);
cpgpage();
offsetn = plot_dataview(dv, minval, maxval, 1.0);
break;
case 'A': /* Zoom in */
case 'a':
centern = inx + offsetn;
case 'I':
case 'i':
if (DEBUGOUT)
printf(" Zooming in (zoomlevel = %d)...\n", zoomlevel);
if (zoomlevel < maxzoom) {
zoomlevel++;
free(dv);
dv = get_dataview(centern, zoomlevel, lodp);
cpgpage();
offsetn = plot_dataview(dv, minval, maxval, 1.0);
} else
printf(" Already at maximum zoom level (%d).\n", zoomlevel);
break;
case 'X': /* Zoom out */
case 'x':
case 'O':
case 'o':
if (DEBUGOUT)
printf(" Zooming out (zoomlevel = %d)...\n", zoomlevel);
if (zoomlevel > minzoom) {
zoomlevel--;
free(dv);
dv = get_dataview(centern, zoomlevel, lodp);
cpgpage();
offsetn = plot_dataview(dv, minval, maxval, 1.0);
} else
printf(" Already at minimum zoom level (%d).\n", zoomlevel);
break;
case '<': /* Shift left 1 full screen */
centern -= dv->numsamps + dv->numsamps / 8;
case ',': /* Shift left 1/8 screen */
if (DEBUGOUT)
printf(" Shifting left...\n");
centern -= dv->numsamps / 8;
{ /* Should probably get the previous chunk from the datfile... */
double lowestr;
lowestr = 0.5 * dv->numsamps;
if (centern < lowestr)
centern = lowestr;
}
free(dv);
dv = get_dataview(centern, zoomlevel, lodp);
cpgpage();
offsetn = plot_dataview(dv, minval, maxval, 1.0);
break;
case '>': /* Shift right 1 full screen */
centern += dv->numsamps - dv->numsamps / 8;
case '.': /* Shift right 1/8 screen */
centern += dv->numsamps / 8;
if (DEBUGOUT)
printf(" Shifting right...\n");
{ /* Should probably get the next chunk from the datfile... */
double highestr;
highestr = lodp->nlo + lodp->nn - 0.5 * dv->numsamps;
if (centern > highestr)
centern = highestr;
}
free(dv);
dv = get_dataview(centern, zoomlevel, lodp);
cpgpage();
offsetn = plot_dataview(dv, minval, maxval, 1.0);
break;
case '+': /* Increase height of top edge */
{
float dy;
if (maxval > 0.5 * LARGENUM) {
printf(" Auto-scaling of top edge is off.\n");
if (minval < 0.5 * SMALLNUM)
dy = dv->maxval - dv->minval;
else
dy = dv->maxval - minval;
maxval = dv->maxval + 0.1 * dy;
} else {
if (minval < 0.5 * SMALLNUM)
dy = maxval - dv->minval;
else
dy = maxval - minval;
maxval += 0.1 * dy;
}
cpgpage();
offsetn = plot_dataview(dv, minval, maxval, 1.0);
break;
}
case '_': /* Decrease height of top edge */
{
float dy;
if (maxval > 0.5 * LARGENUM) {
printf(" Auto-scaling of top edge is off.\n");
if (minval < 0.5 * SMALLNUM)
dy = dv->maxval - dv->minval;
else
dy = dv->maxval - minval;
maxval = dv->maxval - 0.1 * dy;
} else {
if (minval < 0.5 * SMALLNUM)
dy = maxval - dv->minval;
else
dy = maxval - minval;
maxval -= 0.1 * dy;
}
cpgpage();
offsetn = plot_dataview(dv, minval, maxval, 1.0);
break;
}
case '=': /* Increase height of bottom edge */
{
float dy;
if (minval < 0.5 * SMALLNUM) {
printf(" Auto-scaling of bottom edge is off.\n");
if (maxval > 0.5 * LARGENUM)
dy = dv->maxval - dv->minval;
else
dy = maxval - dv->minval;
minval = dv->minval + 0.1 * dy;
} else {
if (maxval > 0.5 * LARGENUM)
dy = dv->maxval - minval;
else
dy = maxval - minval;
minval += 0.1 * dy;
}
cpgpage();
offsetn = plot_dataview(dv, minval, maxval, 1.0);
break;
}
case '-': /* Decrease height of bottom edge */
{
float dy;
if (minval < 0.5 * SMALLNUM) {
printf(" Auto-scaling of bottom edge is off.\n");
if (maxval > 0.5 * LARGENUM)
dy = dv->maxval - dv->minval;
else
dy = maxval - dv->minval;
minval = dv->minval - 0.1 * dy;
} else {
if (maxval > 0.5 * LARGENUM)
dy = dv->maxval - minval;
else
dy = maxval - minval;
minval -= 0.1 * dy;
}
cpgpage();
offsetn = plot_dataview(dv, minval, maxval, 1.0);
break;
}
case 'S': /* Auto-scale */
case 's':
printf(" Auto-scaling is on.\n");
minval = SMALLNUM;
maxval = LARGENUM;
cpgpage();
offsetn = plot_dataview(dv, minval, maxval, 1.0);
break;
case 'G': /* Goto a time */
case 'g':
{
char timestr[50];
double time = -1.0;
while (time < 0.0) {
printf
(" Enter the time (s) from the beginning of the file to go to:\n");
fgets(timestr, 50, stdin);
timestr[strlen(timestr) - 1] = '\0';
time = atof(timestr);
}
offsetn = 0.0;
centern = (int) (time / idata.dt + 0.5);
printf(" Moving to time %.15g (data point %d).\n", time, centern);
free(dv);
dv = get_dataview(centern, zoomlevel, lodp);
cpgpage();
offsetn = plot_dataview(dv, minval, maxval, 1.0);
}
break;
case '?': /* Print help screen */
print_help();
break;
case 'P': /* Print the current plot */
case 'p':
{
int len;
char filename[200];
printf(" Enter the filename to save the plot as:\n");
fgets(filename, 195, stdin);
len = strlen(filename) - 1;
filename[len + 0] = '/';
filename[len + 1] = 'C';
filename[len + 2] = 'P';
filename[len + 3] = 'S';
filename[len + 4] = '\0';
psid = cpgopen(filename);
cpgslct(psid);
cpgpap(10.25, 8.5 / 11.0);
cpgiden();
offsetn = plot_dataview(dv, minval, maxval, 1.0);
cpgclos();
cpgslct(xid);
filename[len] = '\0';
printf(" Wrote the plot to the file '%s'.\n", filename);
}
break;
case 'V': /* Show the basic statistics for the current dataview */
case 'v':
statvals = calc_stats(dv, lodp);
printf("\n Statistics:\n"
" Low sample %d\n"
" Number of samples %d\n"
" Low time (s) %.7g\n"
" Duration of samples (s) %.7g\n"
" Maximum value %.7g\n"
" Minimum value %.7g\n"
" Average value %.7g\n"
" Median value %.7g\n"
" Standard Deviation %.7g\n"
" Skewness %.7g\n"
" Kurtosis %.7g\n\n",
dv->lon, dv->numsamps, dv->lon * idata.dt, dv->numsamps * idata.dt,
statvals->max, statvals->min, statvals->average,
statvals->median, statvals->stdev,
statvals->skewness, statvals->kurtosis);
free(statvals);
break;
case 'Q': /* Quit */
case 'q':
printf(" Quitting...\n");
free(dv);
cpgclos();
break;
default:
printf(" Unrecognized option '%c'.\n", inchar);
break;
}
} while (inchar != 'Q' && inchar != 'q');
free_datapart(lodp);
#ifdef USEMMAP
close(mmap_file);
#else
fclose(datfile);
#endif
printf("Done\n\n");
return 0;
}
void create_accelobs(accelobs * obs, infodata * idata, Cmdline * cmd, int usemmap)
{
int ii, rootlen, input_shorts = 0;
{
int hassuffix = 0;
char *suffix;
hassuffix = split_root_suffix(cmd->argv[0], &(obs->rootfilenm), &suffix);
if (hassuffix) {
if (strcmp(suffix, "fft") != 0 &&
strcmp(suffix, "dat") != 0 && strcmp(suffix, "sdat") != 0) {
printf("\nInput file ('%s') must be an '.fft' or '.[s]dat' file!\n\n",
cmd->argv[0]);
free(suffix);
exit(0);
}
/* If the input file is a time series */
if (strcmp(suffix, "dat") == 0 || strcmp(suffix, "sdat") == 0) {
obs->dat_input = 1;
obs->mmap_file = 0;
if (strcmp(suffix, "sdat") == 0)
input_shorts = 1;
} else {
obs->dat_input = 0;
}
free(suffix);
} else {
printf("\nInput file ('%s') must be an '.fft' or '.[s]dat' file!\n\n",
cmd->argv[0]);
exit(0);
}
}
if (cmd->noharmpolishP)
obs->use_harmonic_polishing = 0;
else
obs->use_harmonic_polishing = 1; // now default
/* Read the info file */
readinf(idata, obs->rootfilenm);
if (idata->object) {
printf("Analyzing %s data from '%s'.\n\n",
remove_whitespace(idata->object), cmd->argv[0]);
} else {
printf("Analyzing data from '%s'.\n\n", cmd->argv[0]);
}
/* Prepare the input time series if required */
if (obs->dat_input) {
FILE *datfile;
long long filelen;
float *ftmp;
printf("Reading and FFTing the time series...");
fflush(NULL);
datfile = chkfopen(cmd->argv[0], "rb");
/* Check the length of the file to see if we can handle it */
filelen = chkfilelen(datfile, sizeof(float));
if (input_shorts)
filelen *= 2;
if (filelen > 67108864) { /* Small since we need memory for the templates */
printf("\nThe input time series is too large. Use 'realfft' first.\n\n");
exit(0);
}
/* Read the time series into a temporary buffer */
/* Note: The padding allows us to search very short time series */
/* using correlations without having to worry about */
/* accessing data before or after the valid FFT freqs. */
if (input_shorts) {
short *stmp = gen_svect(filelen);
ftmp = gen_fvect(filelen+2*ACCEL_PADDING);
for (ii = 0; ii < ACCEL_PADDING; ii++) {
ftmp[ii] = 0.0;
ftmp[ii+filelen+ACCEL_PADDING] = 0.0;
}
chkfread(stmp, sizeof(short), filelen, datfile);
for (ii = 0; ii < filelen; ii++)
ftmp[ii+ACCEL_PADDING] = (float) stmp[ii];
free(stmp);
} else {
ftmp = read_float_file(datfile, -ACCEL_PADDING, filelen+2*ACCEL_PADDING);
}
/* Now, offset the pointer so that we are pointing at the first */
/* bits of valid data. */
ftmp += ACCEL_PADDING;
fclose(datfile);
/* FFT it */
realfft(ftmp, filelen, -1);
obs->fftfile = NULL;
obs->fft = (fcomplex *) ftmp;
obs->numbins = filelen / 2;
printf("done.\n");
/* De-redden it */
printf("Removing red-noise...");
deredden(obs->fft, obs->numbins);
printf("done.\n\n");
}
/* Determine the output filenames */
rootlen = strlen(obs->rootfilenm) + 25;
obs->candnm = (char *) calloc(rootlen, 1);
obs->accelnm = (char *) calloc(rootlen, 1);
obs->workfilenm = (char *) calloc(rootlen, 1);
sprintf(obs->candnm, "%s_ACCEL_%d.cand", obs->rootfilenm, cmd->zmax);
sprintf(obs->accelnm, "%s_ACCEL_%d", obs->rootfilenm, cmd->zmax);
sprintf(obs->workfilenm, "%s_ACCEL_%d.txtcand", obs->rootfilenm, cmd->zmax);
/* Open the FFT file if it exists appropriately */
if (!obs->dat_input) {
obs->fftfile = chkfopen(cmd->argv[0], "rb");
obs->numbins = chkfilelen(obs->fftfile, sizeof(fcomplex));
if (usemmap) {
fclose(obs->fftfile);
obs->fftfile = NULL;
printf("Memory mapping the input FFT. This may take a while...\n");
obs->mmap_file = open(cmd->argv[0], O_RDONLY);
if (obs->mmap_file == -1) {
perror("\nError in open() in accel_utils.c");
printf("\n");
exit(-1);
}
obs->fft = (fcomplex *) mmap(0, sizeof(fcomplex) * obs->numbins, PROT_READ,
MAP_SHARED, obs->mmap_file, 0);
if (obs->fft == MAP_FAILED) {
perror("\nError in mmap() in accel_utils.c");
printf("Falling back to a non-mmaped approach\n");
obs->fftfile = chkfopen(cmd->argv[0], "rb");
obs->mmap_file = 0;
}
} else {
obs->mmap_file = 0;
}
}
/* Determine the other parameters */
if (cmd->zmax % ACCEL_DZ)
cmd->zmax = (cmd->zmax / ACCEL_DZ + 1) * ACCEL_DZ;
if (!obs->dat_input)
obs->workfile = chkfopen(obs->workfilenm, "w");
obs->N = (long long) idata->N;
if (cmd->photonP) {
if (obs->mmap_file || obs->dat_input) {
obs->nph = obs->fft[0].r;
} else {
obs->nph = get_numphotons(obs->fftfile);
}
printf("Normalizing powers using %.0f photons.\n\n", obs->nph);
} else {
obs->nph = 0.0;
/* For short FFTs insure that we don't pick up the DC */
/* or Nyquist component as part of the interpolation */
/* for higher frequencies. */
if (cmd->locpowP) {
obs->norm_type = 1;
printf("Normalizing powers using local-power determination.\n\n");
} else if (cmd->medianP) {
obs->norm_type = 0;
printf("Normalizing powers using median-blocks.\n\n");
} else {
obs->norm_type = 0;
printf("Normalizing powers using median-blocks (default).\n\n");
}
if (obs->dat_input) {
obs->fft[0].r = 1.0;
obs->fft[0].i = 1.0;
}
}
obs->lobin = cmd->lobin;
if (obs->lobin > 0) {
obs->nph = 0.0;
if (cmd->lobin > obs->numbins - 1) {
printf("\n'lobin' is greater than the total number of\n");
printf(" frequencies in the data set. Exiting.\n\n");
exit(1);
}
}
if (cmd->numharm != 1 &&
cmd->numharm != 2 &&
cmd->numharm != 4 && cmd->numharm != 8 && cmd->numharm != 16) {
printf("\n'numharm' = %d must be a power-of-two! Exiting\n\n", cmd->numharm);
exit(1);
}
obs->numharmstages = twon_to_index(cmd->numharm) + 1;
obs->dz = ACCEL_DZ;
obs->numz = cmd->zmax * 2 + 1;
obs->numbetween = ACCEL_NUMBETWEEN;
obs->dt = idata->dt;
obs->T = idata->dt * idata->N;
if (cmd->floP) {
obs->rlo = floor(cmd->flo * obs->T);
if (obs->rlo < obs->lobin)
obs->rlo = obs->lobin;
if (obs->rlo > obs->numbins - 1) {
printf("\nLow frequency to search 'flo' is greater than\n");
printf(" the highest available frequency. Exiting.\n\n");
exit(1);
}
} else {
if (cmd->rloP)
obs->rlo = cmd->rlo;
else
obs->rlo = 1.0;
if (obs->rlo < obs->lobin)
obs->rlo = obs->lobin;
if (obs->rlo > obs->numbins - 1) {
printf("\nLow frequency to search 'rlo' is greater than\n");
printf(" the available number of points. Exiting.\n\n");
exit(1);
}
}
obs->highestbin = obs->numbins - 1;
if (cmd->fhiP) {
obs->highestbin = ceil(cmd->fhi * obs->T);
if (obs->highestbin > obs->numbins - 1)
obs->highestbin = obs->numbins - 1;
obs->rhi = obs->highestbin;
if (obs->highestbin < obs->rlo) {
printf("\nHigh frequency to search 'fhi' is less than\n");
printf(" the lowest frequency to search 'flo'. Exiting.\n\n");
exit(1);
}
} else if (cmd->rhiP) {
obs->highestbin = cmd->rhi;
if (obs->highestbin > obs->numbins - 1)
obs->highestbin = obs->numbins - 1;
obs->rhi = obs->highestbin;
if (obs->highestbin < obs->rlo) {
printf("\nHigh frequency to search 'rhi' is less than\n");
printf(" the lowest frequency to search 'rlo'. Exiting.\n\n");
exit(1);
}
}
obs->dr = ACCEL_DR;
obs->zhi = cmd->zmax;
obs->zlo = -cmd->zmax;
obs->sigma = cmd->sigma;
obs->powcut = (float *) malloc(obs->numharmstages * sizeof(float));
obs->numindep = (long long *) malloc(obs->numharmstages * sizeof(long long));
for (ii = 0; ii < obs->numharmstages; ii++) {
if (obs->numz == 1)
obs->numindep[ii] = (obs->rhi - obs->rlo) / index_to_twon(ii);
else
/* The numz+1 takes care of the small amount of */
/* search we get above zmax and below zmin. */
obs->numindep[ii] = (obs->rhi - obs->rlo) * (obs->numz + 1) *
(obs->dz / 6.95) / index_to_twon(ii);
obs->powcut[ii] = power_for_sigma(obs->sigma,
index_to_twon(ii), obs->numindep[ii]);
}
obs->numzap = 0;
/*
if (zapfile!=NULL)
obs->numzap = get_birdies(cmd->zapfile, obs->T, obs->baryv,
&(obs->lobins), &(obs->hibins));
else
obs->numzap = 0;
*/
}
int main(int argc, char *argv[])
{
FILE *bytemaskfile;
float **dataavg = NULL, **datastd = NULL, **datapow = NULL;
float *chandata = NULL, powavg, powstd, powmax;
float inttime, norm, fracterror = RFI_FRACTERROR;
float *rawdata = NULL;
unsigned char **bytemask = NULL;
short *srawdata = NULL;
char *outfilenm, *statsfilenm, *maskfilenm;
char *bytemaskfilenm, *rfifilenm;
int numchan = 0, numint = 0, newper = 0, oldper = 0, good_padvals = 0;
int blocksperint, ptsperint = 0, ptsperblock = 0, padding = 0;
int numcands, candnum, numrfi = 0, numrfivect = NUM_RFI_VECT;
int ii, jj, kk, slen, numread = 0, insubs = 0;
int harmsum = RFI_NUMHARMSUM, lobin = RFI_LOBIN, numbetween = RFI_NUMBETWEEN;
double davg, dvar, freq;
struct spectra_info s;
presto_interptype interptype;
rfi *rfivect = NULL;
mask oldmask, newmask;
fftcand *cands;
infodata idata;
Cmdline *cmd;
/* Call usage() if we have no command line arguments */
if (argc == 1) {
Program = argv[0];
printf("\n");
usage();
exit(0);
}
/* Parse the command line using the excellent program Clig */
cmd = parseCmdline(argc, argv);
spectra_info_set_defaults(&s);
s.filenames = cmd->argv;
s.num_files = cmd->argc;
s.clip_sigma = cmd->clip;
// -1 causes the data to determine if we use weights, scales, &
// offsets for PSRFITS or flip the band for any data type where
// we can figure that out with the data
s.apply_flipband = (cmd->invertP) ? 1 : -1;
s.apply_weight = (cmd->noweightsP) ? 0 : -1;
s.apply_scale = (cmd->noscalesP) ? 0 : -1;
s.apply_offset = (cmd->nooffsetsP) ? 0 : -1;
s.remove_zerodm = (cmd->zerodmP) ? 1 : 0;
if (cmd->noclipP) {
cmd->clip = 0.0;
s.clip_sigma = 0.0;
}
if (cmd->ifsP) {
// 0 = default or summed, 1-4 are possible also
s.use_poln = cmd->ifs;
}
slen = strlen(cmd->outfile) + 20;
#ifdef DEBUG
showOptionValues();
#endif
printf("\n\n");
printf(" Pulsar Data RFI Finder\n");
printf(" by Scott M. Ransom\n\n");
/* The following is the root of all the output files */
outfilenm = (char *) calloc(slen, sizeof(char));
sprintf(outfilenm, "%s_rfifind", cmd->outfile);
/* And here are the output file names */
maskfilenm = (char *) calloc(slen, sizeof(char));
sprintf(maskfilenm, "%s.mask", outfilenm);
bytemaskfilenm = (char *) calloc(slen, sizeof(char));
sprintf(bytemaskfilenm, "%s.bytemask", outfilenm);
rfifilenm = (char *) calloc(slen, sizeof(char));
sprintf(rfifilenm, "%s.rfi", outfilenm);
statsfilenm = (char *) calloc(slen, sizeof(char));
sprintf(statsfilenm, "%s.stats", outfilenm);
sprintf(idata.name, "%s", outfilenm);
if (RAWDATA) {
if (cmd->filterbankP) s.datatype = SIGPROCFB;
else if (cmd->psrfitsP) s.datatype = PSRFITS;
else if (cmd->pkmbP) s.datatype = SCAMP;
else if (cmd->bcpmP) s.datatype = BPP;
else if (cmd->wappP) s.datatype = WAPP;
else if (cmd->spigotP) s.datatype = SPIGOT;
} else { // Attempt to auto-identify the data
identify_psrdatatype(&s, 1);
if (s.datatype==SIGPROCFB) cmd->filterbankP = 1;
else if (s.datatype==PSRFITS) cmd->psrfitsP = 1;
else if (s.datatype==SCAMP) cmd->pkmbP = 1;
else if (s.datatype==BPP) cmd->bcpmP = 1;
else if (s.datatype==WAPP) cmd->wappP = 1;
else if (s.datatype==SPIGOT) cmd->spigotP = 1;
else if (s.datatype==SUBBAND) insubs = 1;
else {
printf("Error: Unable to identify input data files. Please specify type.\n\n");
exit(1);
}
}
if (!cmd->nocomputeP) {
if (RAWDATA || insubs) {
char description[40];
psrdatatype_description(description, s.datatype);
if (s.num_files > 1)
printf("Reading %s data from %d files:\n", description, s.num_files);
else
printf("Reading %s data from 1 file:\n", description);
if (insubs) s.files = (FILE **)malloc(sizeof(FILE *) * s.num_files);
for (ii = 0; ii < s.num_files; ii++) {
printf(" '%s'\n", cmd->argv[ii]);
if (insubs) s.files[ii] = chkfopen(cmd->argv[ii], "rb");
}
printf("\n");
}
if (RAWDATA) {
read_rawdata_files(&s);
print_spectra_info_summary(&s);
spectra_info_to_inf(&s, &idata);
ptsperblock = s.spectra_per_subint;
numchan = s.num_channels;
idata.dm = 0.0;
}
if (insubs) {
/* Set-up values if we are using subbands */
char *tmpname, *root, *suffix;
if (split_root_suffix(s.filenames[0], &root, &suffix) == 0) {
printf("Error: The input filename (%s) must have a suffix!\n\n", s.filenames[0]);
exit(1);
}
if (strncmp(suffix, "sub", 3) == 0) {
tmpname = calloc(strlen(root) + 6, 1);
sprintf(tmpname, "%s.sub", root);
readinf(&idata, tmpname);
free(tmpname);
} else {
printf("\nThe input files (%s) must be subbands! (i.e. *.sub##)\n\n",
s.filenames[0]);
exit(1);
}
free(root);
free(suffix);
ptsperblock = 1;
/* Compensate for the fact that we have subbands and not channels */
idata.freq = idata.freq - 0.5 * idata.chan_wid +
0.5 * idata.chan_wid * (idata.num_chan / s.num_files);
idata.chan_wid = idata.num_chan / s.num_files * idata.chan_wid;
idata.num_chan = numchan = s.num_files;
idata.dm = 0.0;
sprintf(idata.name, "%s", outfilenm);
writeinf(&idata);
s.padvals = gen_fvect(s.num_files);
for (ii = 0 ; ii < s.num_files ; ii++)
s.padvals[ii] = 0.0;
}
/* Read an input mask if wanted */
if (cmd->maskfileP) {
read_mask(cmd->maskfile, &oldmask);
printf("Read old mask information from '%s'\n\n", cmd->maskfile);
good_padvals = determine_padvals(cmd->maskfile, &oldmask, s.padvals);
} else {
oldmask.numchan = oldmask.numint = 0;
}
/* The number of data points and blocks to work with at a time */
if (cmd->blocksP) {
blocksperint = cmd->blocks;
cmd->time = blocksperint * ptsperblock * idata.dt;
} else {
blocksperint = (int) (cmd->time / (ptsperblock * idata.dt) + 0.5);
}
ptsperint = blocksperint * ptsperblock;
numint = (long long) idata.N / ptsperint;
if ((long long) idata.N % ptsperint)
numint++;
inttime = ptsperint * idata.dt;
printf("Analyzing data sections of length %d points (%.6g sec).\n",
ptsperint, inttime);
{
int *factors, numfactors;
factors = get_prime_factors(ptsperint, &numfactors);
printf(" Prime factors are: ");
for (ii = 0; ii < numfactors; ii++)
printf("%d ", factors[ii]);
printf("\n");
if (factors[numfactors - 1] > 13) {
printf(" WARNING: The largest prime factor is pretty big! This will\n"
" cause the FFTs to take a long time to compute. I\n"
" recommend choosing a different -time value.\n");
}
printf("\n");
free(factors);
}
/* Allocate our workarrays */
if (RAWDATA)
rawdata = gen_fvect(idata.num_chan * ptsperblock * blocksperint);
else if (insubs)
srawdata = gen_svect(idata.num_chan * ptsperblock * blocksperint);
dataavg = gen_fmatrix(numint, numchan);
datastd = gen_fmatrix(numint, numchan);
datapow = gen_fmatrix(numint, numchan);
chandata = gen_fvect(ptsperint);
bytemask = gen_bmatrix(numint, numchan);
for (ii = 0; ii < numint; ii++)
for (jj = 0; jj < numchan; jj++)
bytemask[ii][jj] = GOODDATA;
rfivect = rfi_vector(rfivect, numchan, numint, 0, numrfivect);
if (numbetween == 2)
interptype = INTERBIN;
else
interptype = INTERPOLATE;
/* Main loop */
printf("Writing mask data to '%s'.\n", maskfilenm);
printf("Writing RFI data to '%s'.\n", rfifilenm);
printf("Writing statistics to '%s'.\n\n", statsfilenm);
printf("Massaging the data ...\n\n");
printf("Amount Complete = %3d%%", oldper);
fflush(stdout);
for (ii = 0; ii < numint; ii++) { /* Loop over the intervals */
newper = (int) ((float) ii / numint * 100.0 + 0.5);
if (newper > oldper) {
printf("\rAmount Complete = %3d%%", newper);
fflush(stdout);
oldper = newper;
}
/* Read a chunk of data */
if (RAWDATA)
numread = read_rawblocks(rawdata, blocksperint, &s, &padding);
else if (insubs)
numread = read_subband_rawblocks(s.files, s.num_files,
srawdata, blocksperint, &padding);
if (padding)
for (jj = 0; jj < numchan; jj++)
bytemask[ii][jj] |= PADDING;
for (jj = 0; jj < numchan; jj++) { /* Loop over the channels */
if (RAWDATA)
get_channel(chandata, jj, blocksperint, rawdata, &s);
else if (insubs)
get_subband(jj, chandata, srawdata, blocksperint);
/* Calculate the averages and standard deviations */
/* for each point in time. */
if (padding) {
dataavg[ii][jj] = 0.0;
datastd[ii][jj] = 0.0;
datapow[ii][jj] = 1.0;
} else {
avg_var(chandata, ptsperint, &davg, &dvar);
dataavg[ii][jj] = davg;
datastd[ii][jj] = sqrt(dvar);
realfft(chandata, ptsperint, -1);
numcands = 0;
norm = datastd[ii][jj] * datastd[ii][jj] * ptsperint;
if (norm == 0.0)
norm = (chandata[0] == 0.0) ? 1.0 : chandata[0];
cands = search_fft((fcomplex *) chandata, ptsperint / 2,
lobin, ptsperint / 2, harmsum,
numbetween, interptype, norm, cmd->freqsigma,
&numcands, &powavg, &powstd, &powmax);
datapow[ii][jj] = powmax;
/* Record the birdies */
if (numcands) {
for (kk = 0; kk < numcands; kk++) {
freq = cands[kk].r / inttime;
candnum = find_rfi(rfivect, numrfi, freq, RFI_FRACTERROR);
if (candnum >= 0) {
update_rfi(rfivect + candnum, freq, cands[kk].sig, jj, ii);
} else {
update_rfi(rfivect + numrfi, freq, cands[kk].sig, jj, ii);
numrfi++;
if (numrfi == numrfivect) {
numrfivect *= 2;
rfivect = rfi_vector(rfivect, numchan, numint,
numrfivect / 2, numrfivect);
}
}
}
free(cands);
}
}
}
}
printf("\rAmount Complete = 100%%\n");
/* Write the data to the output files */
write_rfifile(rfifilenm, rfivect, numrfi, numchan, numint,
ptsperint, lobin, numbetween, harmsum,
fracterror, cmd->freqsigma);
write_statsfile(statsfilenm, datapow[0], dataavg[0], datastd[0],
numchan, numint, ptsperint, lobin, numbetween);
} else { /* If "-nocompute" */
float freqsigma;
/* Read the data from the output files */
printf("Reading RFI data from '%s'.\n", rfifilenm);
printf("Reading statistics from '%s'.\n", statsfilenm);
readinf(&idata, outfilenm);
read_rfifile(rfifilenm, &rfivect, &numrfi, &numchan, &numint,
&ptsperint, &lobin, &numbetween, &harmsum,
&fracterror, &freqsigma);
numrfivect = numrfi;
read_statsfile(statsfilenm, &datapow, &dataavg, &datastd,
&numchan, &numint, &ptsperint, &lobin, &numbetween);
bytemask = gen_bmatrix(numint, numchan);
printf("Reading bytemask from '%s'.\n\n", bytemaskfilenm);
bytemaskfile = chkfopen(bytemaskfilenm, "rb");
chkfread(bytemask[0], numint * numchan, 1, bytemaskfile);
fclose(bytemaskfile);
for (ii = 0; ii < numint; ii++)
for (jj = 0; jj < numchan; jj++)
bytemask[ii][jj] &= PADDING; /* Clear all but the PADDING bits */
inttime = ptsperint * idata.dt;
}
/* Make the plots and set the mask */
{
int *zapints, *zapchan;
int numzapints = 0, numzapchan = 0;
if (cmd->zapintsstrP) {
zapints = ranges_to_ivect(cmd->zapintsstr, 0, numint - 1, &numzapints);
zapints = (int *) realloc(zapints, (size_t) (sizeof(int) * numint));
} else {
zapints = gen_ivect(numint);
}
if (cmd->zapchanstrP) {
zapchan = ranges_to_ivect(cmd->zapchanstr, 0, numchan - 1, &numzapchan);
zapchan = (int *) realloc(zapchan, (size_t) (sizeof(int) * numchan));
} else {
zapchan = gen_ivect(numchan);
}
rfifind_plot(numchan, numint, ptsperint, cmd->timesigma, cmd->freqsigma,
cmd->inttrigfrac, cmd->chantrigfrac,
dataavg, datastd, datapow, zapchan, numzapchan,
zapints, numzapints, &idata, bytemask,
&oldmask, &newmask, rfivect, numrfi,
cmd->rfixwinP, cmd->rfipsP, cmd->xwinP);
vect_free(zapints);
vect_free(zapchan);
}
/* Write the new mask and bytemask to the file */
write_mask(maskfilenm, &newmask);
bytemaskfile = chkfopen(bytemaskfilenm, "wb");
chkfwrite(bytemask[0], numint * numchan, 1, bytemaskfile);
fclose(bytemaskfile);
/* Determine the percent of good and bad data */
{
int numpad = 0, numbad = 0, numgood = 0;
for (ii = 0; ii < numint; ii++) {
for (jj = 0; jj < numchan; jj++) {
if (bytemask[ii][jj] == GOODDATA) {
numgood++;
} else {
if (bytemask[ii][jj] & PADDING)
numpad++;
else
numbad++;
}
}
}
printf("\nTotal number of intervals in the data: %d\n\n", numint * numchan);
printf(" Number of padded intervals: %7d (%6.3f%%)\n",
numpad, (float) numpad / (float) (numint * numchan) * 100.0);
printf(" Number of good intervals: %7d (%6.3f%%)\n",
numgood, (float) numgood / (float) (numint * numchan) * 100.0);
printf(" Number of bad intervals: %7d (%6.3f%%)\n\n",
numbad, (float) numbad / (float) (numint * numchan) * 100.0);
qsort(rfivect, numrfi, sizeof(rfi), compare_rfi_sigma);
printf(" Ten most significant birdies:\n");
printf("# Sigma Period(ms) Freq(Hz) Number \n");
printf("----------------------------------------------------\n");
for (ii = 0; ii < 10; ii++) {
double pperr;
char temp1[40], temp2[40];
if (rfivect[ii].freq_var == 0.0) {
pperr = 0.0;
sprintf(temp1, " %-14g", rfivect[ii].freq_avg);
sprintf(temp2, " %-14g", 1000.0 / rfivect[ii].freq_avg);
} else {
pperr = 1000.0 * sqrt(rfivect[ii].freq_var) /
(rfivect[ii].freq_avg * rfivect[ii].freq_avg);
nice_output_2(temp1, rfivect[ii].freq_avg, sqrt(rfivect[ii].freq_var),
-15);
nice_output_2(temp2, 1000.0 / rfivect[ii].freq_avg, pperr, -15);
}
printf("%-2d %-8.2f %13s %13s %-8d\n", ii + 1, rfivect[ii].sigma_avg,
temp2, temp1, rfivect[ii].numobs);
}
qsort(rfivect, numrfi, sizeof(rfi), compare_rfi_numobs);
printf("\n Ten most numerous birdies:\n");
printf("# Number Period(ms) Freq(Hz) Sigma \n");
printf("----------------------------------------------------\n");
for (ii = 0; ii < 10; ii++) {
double pperr;
char temp1[40], temp2[40];
if (rfivect[ii].freq_var == 0.0) {
pperr = 0.0;
sprintf(temp1, " %-14g", rfivect[ii].freq_avg);
sprintf(temp2, " %-14g", 1000.0 / rfivect[ii].freq_avg);
} else {
pperr = 1000.0 * sqrt(rfivect[ii].freq_var) /
(rfivect[ii].freq_avg * rfivect[ii].freq_avg);
nice_output_2(temp1, rfivect[ii].freq_avg, sqrt(rfivect[ii].freq_var),
-15);
nice_output_2(temp2, 1000.0 / rfivect[ii].freq_avg, pperr, -15);
}
printf("%-2d %-8d %13s %13s %-8.2f\n", ii + 1, rfivect[ii].numobs,
temp2, temp1, rfivect[ii].sigma_avg);
}
printf("\nDone.\n\n");
}
/* Close the files and cleanup */
free_rfi_vector(rfivect, numrfivect);
free_mask(newmask);
if (cmd->maskfileP)
free_mask(oldmask);
free(outfilenm);
free(statsfilenm);
free(bytemaskfilenm);
free(maskfilenm);
free(rfifilenm);
vect_free(dataavg[0]);
vect_free(dataavg);
vect_free(datastd[0]);
vect_free(datastd);
vect_free(datapow[0]);
vect_free(datapow);
vect_free(bytemask[0]);
vect_free(bytemask);
if (!cmd->nocomputeP) {
// Close all the raw files and free their vectors
close_rawfiles(&s);
vect_free(chandata);
if (insubs)
vect_free(srawdata);
else
vect_free(rawdata);
}
return (0);
}
int main(int argc, char *argv[])
{
FILE *infile, *outfile;
int ii, jj, bufflen = 10000, numread;
long long N = 0;
float *inbuffer = NULL, *outbuffer = NULL;
short useshorts = 0, *sinbuffer = NULL, *soutbuffer = NULL;
char *rootfilenm, *outname;
infodata idata;
Cmdline *cmd;
/* Call usage() if we have no command line arguments */
if (argc == 1) {
Program = argv[0];
printf("\n");
usage();
exit(1);
}
/* Parse the command line using the excellent program Clig */
cmd = parseCmdline(argc, argv);
#ifdef DEBUG
showOptionValues();
#endif
printf("\n\n");
printf(" Time Series Downsampling Routine\n");
printf(" Sept, 2002\n\n");
{
int hassuffix = 0;
char *suffix;
hassuffix = split_root_suffix(cmd->argv[0], &rootfilenm, &suffix);
if (hassuffix) {
if (strcmp(suffix, "sdat") == 0)
useshorts = 1;
if (strcmp(suffix, "dat") != 0 && strcmp(suffix, "sdat") != 0) {
printf
("\nInput file ('%s') must be a time series ('.dat' or '.sdat')!\n\n",
cmd->argv[0]);
free(suffix);
exit(0);
}
free(suffix);
} else {
printf("\nInput file ('%s') must be a time series ('.dat' or '.sdat')!\n\n",
cmd->argv[0]);
exit(0);
}
if (cmd->outfileP) {
outname = cmd->outfile;
} else {
outname = (char *) calloc(strlen(rootfilenm) + 11, sizeof(char));
if (useshorts)
sprintf(outname, "%s_D%d.sdat", rootfilenm, cmd->factor);
else
sprintf(outname, "%s_D%d.dat", rootfilenm, cmd->factor);
}
}
/* Read the info file */
readinf(&idata, rootfilenm);
if (idata.object) {
printf("Downsampling %s data from '%s'.\n\n",
remove_whitespace(idata.object), cmd->argv[0]);
} else {
printf("Downsampling data from '%s'.\n\n", cmd->argv[0]);
}
/* Open files and create arrays */
infile = chkfopen(argv[1], "rb");
outfile = chkfopen(outname, "wb");
/* Read and downsample */
if (useshorts) {
sinbuffer = gen_svect(bufflen * cmd->factor);
soutbuffer = gen_svect(bufflen);
while ((numread =
chkfread(sinbuffer, sizeof(short), bufflen * cmd->factor, infile))) {
for (ii = 0; ii < numread / cmd->factor; ii++) {
soutbuffer[ii] = 0;
for (jj = 0; jj < cmd->factor; jj++)
soutbuffer[ii] += sinbuffer[cmd->factor * ii + jj];
}
chkfwrite(soutbuffer, sizeof(short), numread / cmd->factor, outfile);
N += numread / cmd->factor;
}
vect_free(sinbuffer);
vect_free(soutbuffer);
} else {
inbuffer = gen_fvect(bufflen * cmd->factor);
outbuffer = gen_fvect(bufflen);
while ((numread =
chkfread(inbuffer, sizeof(float), bufflen * cmd->factor, infile))) {
for (ii = 0; ii < numread / cmd->factor; ii++) {
outbuffer[ii] = 0;
for (jj = 0; jj < cmd->factor; jj++)
outbuffer[ii] += inbuffer[cmd->factor * ii + jj];
}
chkfwrite(outbuffer, sizeof(float), numread / cmd->factor, outfile);
N += numread / cmd->factor;
}
vect_free(inbuffer);
vect_free(outbuffer);
}
printf("Done. Wrote %lld points.\n\n", N);
/* Write the new info file */
idata.dt = idata.dt * cmd->factor;
idata.numonoff = 0;
idata.N = (double) N;
strncpy(idata.name, outname, strlen(outname) - 4);
if (useshorts)
idata.name[strlen(outname) - 5] = '\0';
else
idata.name[strlen(outname) - 4] = '\0';
writeinf(&idata);
fclose(infile);
fclose(outfile);
free(rootfilenm);
if (!cmd->outfileP)
free(outname);
exit(0);
}
int main(int argc, char *argv[])
{
/* Any variable that begins with 't' means topocentric */
/* Any variable that begins with 'b' means barycentric */
FILE **outfiles = NULL;
float **outdata;
double dtmp, *dms, avgdm = 0.0, dsdt = 0, maxdm;
double *dispdt, tlotoa = 0.0, blotoa = 0.0, BW_ddelay = 0.0;
double max = -9.9E30, min = 9.9E30, var = 0.0, avg = 0.0;
double *btoa = NULL, *ttoa = NULL, avgvoverc = 0.0;
char obs[3], ephem[10], rastring[50], decstring[50];
long totnumtowrite, totwrote = 0, padwrote = 0, datawrote = 0;
int *idispdt, **offsets;
int ii, jj, numadded = 0, numremoved = 0, padding = 0, good_inputs = 1;
int numbarypts = 0, numread = 0, numtowrite = 0;
int padtowrite = 0, statnum = 0;
int numdiffbins = 0, *diffbins = NULL, *diffbinptr = NULL, good_padvals = 0;
double local_lodm;
char *datafilenm, *outpath, *outfilenm, *hostname;
struct spectra_info s;
infodata idata;
mask obsmask;
MPI_Init(&argc, &argv);
MPI_Comm_size(MPI_COMM_WORLD, &numprocs);
MPI_Comm_rank(MPI_COMM_WORLD, &myid);
#ifdef _OPENMP
omp_set_num_threads(1); // Explicitly turn off OpenMP
#endif
set_using_MPI();
{
FILE *hostfile;
char tmpname[100];
int retval;
hostfile = chkfopen("/etc/hostname", "r");
retval = fscanf(hostfile, "%s\n", tmpname);
if (retval==0) {
printf("Warning: error reading /etc/hostname on proc %d\n", myid);
}
hostname = (char *) calloc(strlen(tmpname) + 1, 1);
memcpy(hostname, tmpname, strlen(tmpname));
fclose(hostfile);
}
/* Call usage() if we have no command line arguments */
if (argc == 1) {
if (myid == 0) {
Program = argv[0];
usage();
}
MPI_Finalize();
exit(1);
}
make_maskbase_struct();
make_spectra_info_struct();
/* Parse the command line using the excellent program Clig */
cmd = parseCmdline(argc, argv);
spectra_info_set_defaults(&s);
// If we are zeroDMing, make sure that clipping is off.
if (cmd->zerodmP) cmd->noclipP = 1;
s.clip_sigma = cmd->clip;
if (cmd->noclipP) {
cmd->clip = 0.0;
s.clip_sigma = 0.0;
}
if (cmd->ifsP) {
// 0 = default or summed, 1-4 are possible also
s.use_poln = cmd->ifs + 1;
}
if (!cmd->numoutP)
cmd->numout = LONG_MAX;
#ifdef DEBUG
showOptionValues();
#endif
if (myid == 0) { /* Master node only */
printf("\n\n");
printf(" Parallel Pulsar Subband De-dispersion Routine\n");
printf(" by Scott M. Ransom\n\n");
s.filenames = cmd->argv;
s.num_files = cmd->argc;
s.clip_sigma = cmd->clip;
// -1 causes the data to determine if we use weights, scales, &
// offsets for PSRFITS or flip the band for any data type where
// we can figure that out with the data
s.apply_flipband = (cmd->invertP) ? 1 : -1;
s.apply_weight = (cmd->noweightsP) ? 0 : -1;
s.apply_scale = (cmd->noscalesP) ? 0 : -1;
s.apply_offset = (cmd->nooffsetsP) ? 0 : -1;
s.remove_zerodm = (cmd->zerodmP) ? 1 : 0;
if (RAWDATA) {
if (cmd->filterbankP) s.datatype = SIGPROCFB;
else if (cmd->psrfitsP) s.datatype = PSRFITS;
else if (cmd->pkmbP) s.datatype = SCAMP;
else if (cmd->bcpmP) s.datatype = BPP;
else if (cmd->wappP) s.datatype = WAPP;
else if (cmd->spigotP) s.datatype = SPIGOT;
} else { // Attempt to auto-identify the data
identify_psrdatatype(&s, 1);
if (s.datatype==SIGPROCFB) cmd->filterbankP = 1;
else if (s.datatype==PSRFITS) cmd->psrfitsP = 1;
else if (s.datatype==SCAMP) cmd->pkmbP = 1;
else if (s.datatype==BPP) cmd->bcpmP = 1;
else if (s.datatype==WAPP) cmd->wappP = 1;
else if (s.datatype==SPIGOT) cmd->spigotP = 1;
else if (s.datatype==SUBBAND) insubs = 1;
else {
printf("\nError: Unable to identify input data files. Please specify type.\n\n");
good_inputs = 0;
}
}
// So far we can only handle PSRFITS, filterbank, and subbands
if (s.datatype!=PSRFITS &&
s.datatype!=SIGPROCFB &&
s.datatype!=SUBBAND) good_inputs = 0;
// For subbanded data
if (!RAWDATA) s.files = (FILE **)malloc(sizeof(FILE *) * s.num_files);
if (good_inputs && (RAWDATA || insubs)) {
char description[40];
psrdatatype_description(description, s.datatype);
if (s.num_files > 1)
printf("Reading %s data from %d files:\n", description, s.num_files);
else
printf("Reading %s data from 1 file:\n", description);
for (ii = 0; ii < s.num_files; ii++) {
printf(" '%s'\n", cmd->argv[ii]);
if (insubs) s.files[ii] = chkfopen(s.filenames[ii], "rb");
}
printf("\n");
if (RAWDATA) {
read_rawdata_files(&s);
print_spectra_info_summary(&s);
spectra_info_to_inf(&s, &idata);
} else { // insubs
char *root, *suffix;
cmd->nsub = s.num_files;
s.N = chkfilelen(s.files[0], sizeof(short));
s.start_subint = gen_ivect(1);
s.num_subint = gen_ivect(1);
s.start_MJD = (long double *)malloc(sizeof(long double));
s.start_spec = (long long *)malloc(sizeof(long long));
s.num_spec = (long long *)malloc(sizeof(long long));
s.num_pad = (long long *)malloc(sizeof(long long));
s.start_spec[0] = 0L;
s.start_subint[0] = 0;
s.num_spec[0] = s.N;
s.num_subint[0] = s.N / SUBSBLOCKLEN;
s.num_pad[0] = 0L;
s.padvals = gen_fvect(s.num_files);
for (ii = 0 ; ii < ii ; ii++)
s.padvals[ii] = 0.0;
if (split_root_suffix(s.filenames[0], &root, &suffix) == 0) {
printf("\nError: The input filename (%s) must have a suffix!\n\n", s.filenames[0]);
exit(1);
}
if (strncmp(suffix, "sub", 3) == 0) {
char *tmpname;
tmpname = calloc(strlen(root) + 10, 1);
sprintf(tmpname, "%s.sub", root);
readinf(&idata, tmpname);
free(tmpname);
strncpy(s.telescope, idata.telescope, 40);
strncpy(s.backend, idata.instrument, 40);
strncpy(s.observer, idata.observer, 40);
strncpy(s.source, idata.object, 40);
s.ra2000 = hms2rad(idata.ra_h, idata.ra_m,
idata.ra_s) * RADTODEG;
s.dec2000 = dms2rad(idata.dec_d, idata.dec_m,
idata.dec_s) * RADTODEG;
ra_dec_to_string(s.ra_str,
idata.ra_h, idata.ra_m, idata.ra_s);
ra_dec_to_string(s.dec_str,
idata.dec_d, idata.dec_m, idata.dec_s);
s.num_channels = idata.num_chan;
s.start_MJD[0] = idata.mjd_i + idata.mjd_f;
s.dt = idata.dt;
s.T = s.N * s.dt;
s.lo_freq = idata.freq;
s.df = idata.chan_wid;
s.hi_freq = s.lo_freq + (s.num_channels - 1.0) * s.df;
s.BW = s.num_channels * s.df;
s.fctr = s.lo_freq - 0.5 * s.df + 0.5 * s.BW;
s.beam_FWHM = idata.fov / 3600.0;
s.spectra_per_subint = SUBSBLOCKLEN;
print_spectra_info_summary(&s);
} else {
printf("\nThe input files (%s) must be subbands! (i.e. *.sub##)\n\n",
cmd->argv[0]);
MPI_Finalize();
exit(1);
}
free(root);
free(suffix);
}
}
}
// If we don't have good input data, exit
MPI_Bcast(&good_inputs, 1, MPI_INT, 0, MPI_COMM_WORLD);
if (!good_inputs) {
MPI_Finalize();
exit(1);
}
MPI_Bcast(&insubs, 1, MPI_INT, 0, MPI_COMM_WORLD);
if (insubs)
cmd->nsub = cmd->argc;
/* Determine the output file names and open them */
local_numdms = cmd->numdms / (numprocs - 1);
dms = gen_dvect(local_numdms);
if (cmd->numdms % (numprocs - 1)) {
if (myid == 0)
printf
("\nThe number of DMs must be divisible by (the number of processors - 1).\n\n");
MPI_Finalize();
exit(1);
}
local_lodm = cmd->lodm + (myid - 1) * local_numdms * cmd->dmstep;
split_path_file(cmd->outfile, &outpath, &outfilenm);
datafilenm = (char *) calloc(strlen(outfilenm) + 20, 1);
if (myid > 0) {
if (chdir(outpath) == -1) {
printf("\nProcess %d on %s cannot chdir() to '%s'. Exiting.\n\n",
myid, hostname, outpath);
MPI_Finalize();
exit(1);
}
outfiles = (FILE **) malloc(local_numdms * sizeof(FILE *));
for (ii = 0; ii < local_numdms; ii++) {
dms[ii] = local_lodm + ii * cmd->dmstep;
avgdm += dms[ii];
sprintf(datafilenm, "%s_DM%.2f.dat", outfilenm, dms[ii]);
outfiles[ii] = chkfopen(datafilenm, "wb");
}
avgdm /= local_numdms;
}
// Broadcast the raw data information
broadcast_spectra_info(&s, myid);
if (myid > 0) {
spectra_info_to_inf(&s, &idata);
if (s.datatype==SIGPROCFB) cmd->filterbankP = 1;
else if (s.datatype==PSRFITS) cmd->psrfitsP = 1;
else if (s.datatype==SCAMP) cmd->pkmbP = 1;
else if (s.datatype==BPP) cmd->bcpmP = 1;
else if (s.datatype==WAPP) cmd->wappP = 1;
else if (s.datatype==SPIGOT) cmd->spigotP = 1;
else if (s.datatype==SUBBAND) insubs = 1;
}
s.filenames = cmd->argv;
/* Read an input mask if wanted */
if (myid > 0) {
int numpad = s.num_channels;
if (insubs)
numpad = s.num_files;
s.padvals = gen_fvect(numpad);
for (ii = 0 ; ii < numpad ; ii++)
s.padvals[ii] = 0.0;
}
if (cmd->maskfileP) {
if (myid == 0) {
read_mask(cmd->maskfile, &obsmask);
printf("Read mask information from '%s'\n\n", cmd->maskfile);
good_padvals = determine_padvals(cmd->maskfile, &obsmask, s.padvals);
}
broadcast_mask(&obsmask, myid);
MPI_Bcast(&good_padvals, 1, MPI_INT, 0, MPI_COMM_WORLD);
MPI_Bcast(s.padvals, obsmask.numchan, MPI_FLOAT, 0, MPI_COMM_WORLD);
} else {
obsmask.numchan = obsmask.numint = 0;
MPI_Bcast(&good_padvals, 1, MPI_INT, 0, MPI_COMM_WORLD);
}
// The number of topo to bary time points to generate with TEMPO
numbarypts = (int) (s.T * 1.1 / TDT + 5.5) + 1;
// Identify the TEMPO observatory code
{
char *outscope = (char *) calloc(40, sizeof(char));
telescope_to_tempocode(idata.telescope, outscope, obs);
free(outscope);
}
// Broadcast or calculate a few extra important values
if (insubs) avgdm = idata.dm;
idata.dm = avgdm;
dsdt = cmd->downsamp * idata.dt;
maxdm = cmd->lodm + cmd->numdms * cmd->dmstep;
BW_ddelay = delay_from_dm(maxdm, idata.freq) -
delay_from_dm(maxdm, idata.freq + (idata.num_chan-1) * idata.chan_wid);
blocksperread = ((int) (BW_ddelay / idata.dt) / s.spectra_per_subint + 1);
worklen = s.spectra_per_subint * blocksperread;
if (cmd->nsub > s.num_channels) {
printf
("Warning: The number of requested subbands (%d) is larger than the number of channels (%d).\n",
cmd->nsub, s.num_channels);
printf(" Re-setting the number of subbands to %d.\n\n", s.num_channels);
cmd->nsub = s.num_channels;
}
if (s.spectra_per_subint % cmd->downsamp) {
if (myid == 0) {
printf
("\nError: The downsample factor (%d) must be a factor of the\n",
cmd->downsamp);
printf(" blocklength (%d). Exiting.\n\n", s.spectra_per_subint);
}
MPI_Finalize();
exit(1);
}
tlotoa = idata.mjd_i + idata.mjd_f; /* Topocentric epoch */
if (cmd->numoutP)
totnumtowrite = cmd->numout;
else
totnumtowrite = (long) idata.N / cmd->downsamp;
if (cmd->nobaryP) { /* Main loop if we are not barycentering... */
/* Dispersion delays (in bins). The high freq gets no delay */
/* All other delays are positive fractions of bin length (dt) */
dispdt = subband_search_delays(s.num_channels, cmd->nsub, avgdm,
idata.freq, idata.chan_wid, 0.0);
idispdt = gen_ivect(s.num_channels);
for (ii = 0; ii < s.num_channels; ii++)
idispdt[ii] = NEAREST_LONG(dispdt[ii] / idata.dt);
vect_free(dispdt);
/* The subband dispersion delays (see note above) */
offsets = gen_imatrix(local_numdms, cmd->nsub);
for (ii = 0; ii < local_numdms; ii++) {
double *subdispdt;
subdispdt = subband_delays(s.num_channels, cmd->nsub, dms[ii],
idata.freq, idata.chan_wid, 0.0);
dtmp = subdispdt[cmd->nsub - 1];
for (jj = 0; jj < cmd->nsub; jj++)
offsets[ii][jj] = NEAREST_LONG((subdispdt[jj] - dtmp) / dsdt);
vect_free(subdispdt);
}
/* Allocate our data array and start getting data */
if (myid == 0) {
printf("De-dispersing using %d subbands.\n", cmd->nsub);
if (cmd->downsamp > 1)
printf("Downsampling by a factor of %d (new dt = %.10g)\n",
cmd->downsamp, dsdt);
printf("\n");
}
/* Print the nodes and the DMs they are handling */
print_dms(hostname, myid, numprocs, local_numdms, dms);
outdata = gen_fmatrix(local_numdms, worklen / cmd->downsamp);
numread = get_data(outdata, blocksperread, &s,
&obsmask, idispdt, offsets, &padding);
while (numread == worklen) {
numread /= cmd->downsamp;
if (myid == 0)
print_percent_complete(totwrote, totnumtowrite);
/* Write the latest chunk of data, but don't */
/* write more than cmd->numout points. */
numtowrite = numread;
if (cmd->numoutP && (totwrote + numtowrite) > cmd->numout)
numtowrite = cmd->numout - totwrote;
if (myid > 0) {
write_data(outfiles, local_numdms, outdata, 0, numtowrite);
/* Update the statistics */
if (!padding) {
for (ii = 0; ii < numtowrite; ii++)
update_stats(statnum + ii, outdata[0][ii], &min, &max, &avg, &var);
statnum += numtowrite;
}
}
totwrote += numtowrite;
/* Stop if we have written out all the data we need to */
if (cmd->numoutP && (totwrote == cmd->numout))
break;
numread = get_data(outdata, blocksperread, &s,
&obsmask, idispdt, offsets, &padding);
}
datawrote = totwrote;
} else { /* Main loop if we are barycentering... */
/* What ephemeris will we use? (Default is DE405) */
strcpy(ephem, "DE405");
/* Define the RA and DEC of the observation */
ra_dec_to_string(rastring, idata.ra_h, idata.ra_m, idata.ra_s);
ra_dec_to_string(decstring, idata.dec_d, idata.dec_m, idata.dec_s);
/* Allocate some arrays */
btoa = gen_dvect(numbarypts);
ttoa = gen_dvect(numbarypts);
for (ii = 0; ii < numbarypts; ii++)
ttoa[ii] = tlotoa + TDT * ii / SECPERDAY;
/* Call TEMPO for the barycentering */
if (myid == 0) {
double maxvoverc = -1.0, minvoverc = 1.0, *voverc = NULL;
printf("\nGenerating barycentric corrections...\n");
voverc = gen_dvect(numbarypts);
barycenter(ttoa, btoa, voverc, numbarypts, rastring, decstring, obs, ephem);
for (ii = 0; ii < numbarypts; ii++) {
if (voverc[ii] > maxvoverc)
maxvoverc = voverc[ii];
if (voverc[ii] < minvoverc)
minvoverc = voverc[ii];
avgvoverc += voverc[ii];
}
avgvoverc /= numbarypts;
vect_free(voverc);
printf(" Average topocentric velocity (c) = %.7g\n", avgvoverc);
printf(" Maximum topocentric velocity (c) = %.7g\n", maxvoverc);
printf(" Minimum topocentric velocity (c) = %.7g\n\n", minvoverc);
printf("De-dispersing using %d subbands.\n", cmd->nsub);
if (cmd->downsamp > 1) {
printf(" Downsample = %d\n", cmd->downsamp);
printf(" New sample dt = %.10g\n", dsdt);
}
printf("\n");
}
/* Print the nodes and the DMs they are handling */
print_dms(hostname, myid, numprocs, local_numdms, dms);
MPI_Bcast(btoa, numbarypts, MPI_DOUBLE, 0, MPI_COMM_WORLD);
MPI_Bcast(&avgvoverc, 1, MPI_DOUBLE, 0, MPI_COMM_WORLD);
blotoa = btoa[0];
/* Dispersion delays (in bins). The high freq gets no delay */
/* All other delays are positive fractions of bin length (dt) */
dispdt = subband_search_delays(s.num_channels, cmd->nsub, avgdm,
idata.freq, idata.chan_wid, avgvoverc);
idispdt = gen_ivect(s.num_channels);
for (ii = 0; ii < s.num_channels; ii++)
idispdt[ii] = NEAREST_LONG(dispdt[ii] / idata.dt);
vect_free(dispdt);
/* The subband dispersion delays (see note above) */
offsets = gen_imatrix(local_numdms, cmd->nsub);
for (ii = 0; ii < local_numdms; ii++) {
double *subdispdt;
subdispdt = subband_delays(s.num_channels, cmd->nsub, dms[ii],
idata.freq, idata.chan_wid, avgvoverc);
dtmp = subdispdt[cmd->nsub - 1];
for (jj = 0; jj < cmd->nsub; jj++)
offsets[ii][jj] = NEAREST_LONG((subdispdt[jj] - dtmp) / dsdt);
vect_free(subdispdt);
}
/* Convert the bary TOAs to differences from the topo TOAs in */
/* units of bin length (dt) rounded to the nearest integer. */
dtmp = (btoa[0] - ttoa[0]);
for (ii = 0; ii < numbarypts; ii++)
btoa[ii] = ((btoa[ii] - ttoa[ii]) - dtmp) * SECPERDAY / dsdt;
/* Find the points where we need to add or remove bins */
{
int oldbin = 0, currentbin;
double lobin, hibin, calcpt;
numdiffbins = abs(NEAREST_LONG(btoa[numbarypts - 1])) + 1;
diffbins = gen_ivect(numdiffbins);
diffbinptr = diffbins;
for (ii = 1; ii < numbarypts; ii++) {
currentbin = NEAREST_LONG(btoa[ii]);
if (currentbin != oldbin) {
if (currentbin > 0) {
calcpt = oldbin + 0.5;
lobin = (ii - 1) * TDT / dsdt;
hibin = ii * TDT / dsdt;
} else {
calcpt = oldbin - 0.5;
lobin = -((ii - 1) * TDT / dsdt);
hibin = -(ii * TDT / dsdt);
}
while (fabs(calcpt) < fabs(btoa[ii])) {
/* Negative bin number means remove that bin */
/* Positive bin number means add a bin there */
*diffbinptr =
NEAREST_LONG(LININTERP
(calcpt, btoa[ii - 1], btoa[ii], lobin, hibin));
diffbinptr++;
calcpt = (currentbin > 0) ? calcpt + 1.0 : calcpt - 1.0;
}
oldbin = currentbin;
}
}
*diffbinptr = cmd->numout; /* Used as a marker */
}
diffbinptr = diffbins;
/* Now perform the barycentering */
outdata = gen_fmatrix(local_numdms, worklen / cmd->downsamp);
numread = get_data(outdata, blocksperread, &s,
&obsmask, idispdt, offsets, &padding);
while (numread == worklen) { /* Loop to read and write the data */
int numwritten = 0;
double block_avg, block_var;
numread /= cmd->downsamp;
/* Determine the approximate local average */
avg_var(outdata[0], numread, &block_avg, &block_var);
if (myid == 0)
print_percent_complete(totwrote, totnumtowrite);
/* Simply write the data if we don't have to add or */
/* remove any bins from this batch. */
/* OR write the amount of data up to cmd->numout or */
/* the next bin that will be added or removed. */
numtowrite = abs(*diffbinptr) - datawrote;
if (cmd->numoutP && (totwrote + numtowrite) > cmd->numout)
numtowrite = cmd->numout - totwrote;
if (numtowrite > numread)
numtowrite = numread;
if (myid > 0) {
write_data(outfiles, local_numdms, outdata, 0, numtowrite);
/* Update the statistics */
if (!padding) {
for (ii = 0; ii < numtowrite; ii++)
update_stats(statnum + ii, outdata[0][ii], &min, &max, &avg, &var);
statnum += numtowrite;
}
}
datawrote += numtowrite;
totwrote += numtowrite;
numwritten += numtowrite;
if ((datawrote == abs(*diffbinptr)) &&
(numwritten != numread) &&
(totwrote < cmd->numout)) { /* Add/remove a bin */
int skip, nextdiffbin;
skip = numtowrite;
/* Write the rest of the data after adding/removing a bin */
do {
if (*diffbinptr > 0) {
/* Add a bin */
if (myid > 0)
write_padding(outfiles, local_numdms, block_avg, 1);
numadded++;
totwrote++;
} else {
/* Remove a bin */
numremoved++;
datawrote++;
numwritten++;
skip++;
}
diffbinptr++;
/* Write the part after the diffbin */
numtowrite = numread - numwritten;
if (cmd->numoutP && (totwrote + numtowrite) > cmd->numout)
numtowrite = cmd->numout - totwrote;
nextdiffbin = abs(*diffbinptr) - datawrote;
if (numtowrite > nextdiffbin)
numtowrite = nextdiffbin;
if (myid > 0) {
write_data(outfiles, local_numdms, outdata, skip, numtowrite);
/* Update the statistics and counters */
if (!padding) {
for (ii = 0; ii < numtowrite; ii++)
update_stats(statnum + ii,
outdata[0][skip + ii], &min, &max, &avg, &var);
statnum += numtowrite;
}
}
numwritten += numtowrite;
datawrote += numtowrite;
totwrote += numtowrite;
skip += numtowrite;
/* Stop if we have written out all the data we need to */
if (cmd->numoutP && (totwrote == cmd->numout))
break;
} while (numwritten < numread);
}
/* Stop if we have written out all the data we need to */
if (cmd->numoutP && (totwrote == cmd->numout))
break;
numread = get_data(outdata, blocksperread, &s,
&obsmask, idispdt, offsets, &padding);
}
}
if (myid > 0) {
/* Calculate the amount of padding we need */
if (cmd->numoutP && (cmd->numout > totwrote))
padwrote = padtowrite = cmd->numout - totwrote;
/* Write the new info file for the output data */
idata.dt = dsdt;
update_infodata(&idata, totwrote, padtowrite, diffbins,
numdiffbins, cmd->downsamp);
for (ii = 0; ii < local_numdms; ii++) {
idata.dm = dms[ii];
if (!cmd->nobaryP) {
double baryepoch, barydispdt, baryhifreq;
baryhifreq = idata.freq + (s.num_channels - 1) * idata.chan_wid;
barydispdt = delay_from_dm(dms[ii], doppler(baryhifreq, avgvoverc));
baryepoch = blotoa - (barydispdt / SECPERDAY);
idata.bary = 1;
idata.mjd_i = (int) floor(baryepoch);
idata.mjd_f = baryepoch - idata.mjd_i;
}
sprintf(idata.name, "%s_DM%.2f", outfilenm, dms[ii]);
writeinf(&idata);
}
/* Set the padded points equal to the average data point */
if (idata.numonoff >= 1) {
int index, startpad, endpad;
for (ii = 0; ii < local_numdms; ii++) {
fclose(outfiles[ii]);
sprintf(datafilenm, "%s_DM%.2f.dat", outfilenm, dms[ii]);
outfiles[ii] = chkfopen(datafilenm, "rb+");
}
for (ii = 0; ii < idata.numonoff; ii++) {
index = 2 * ii;
startpad = idata.onoff[index + 1];
if (ii == idata.numonoff - 1)
endpad = idata.N - 1;
else
endpad = idata.onoff[index + 2];
for (jj = 0; jj < local_numdms; jj++)
chkfseek(outfiles[jj], (startpad + 1) * sizeof(float), SEEK_SET);
padtowrite = endpad - startpad;
write_padding(outfiles, local_numdms, avg, padtowrite);
}
}
}
/* Print simple stats and results */
var /= (datawrote - 1);
if (myid == 0)
print_percent_complete(1, 1);
if (myid == 1) {
printf("\n\nDone.\n\nSimple statistics of the output data:\n");
printf(" Data points written: %ld\n", totwrote);
if (padwrote)
printf(" Padding points written: %ld\n", padwrote);
if (!cmd->nobaryP) {
if (numadded)
printf(" Bins added for barycentering: %d\n", numadded);
if (numremoved)
printf(" Bins removed for barycentering: %d\n", numremoved);
}
printf(" Maximum value of data: %.2f\n", max);
printf(" Minimum value of data: %.2f\n", min);
printf(" Data average value: %.2f\n", avg);
printf(" Data standard deviation: %.2f\n", sqrt(var));
printf("\n");
}
/* Close the files and cleanup */
if (cmd->maskfileP)
free_mask(obsmask);
if (myid > 0) {
for (ii = 0; ii < local_numdms; ii++)
fclose(outfiles[ii]);
free(outfiles);
}
vect_free(outdata[0]);
vect_free(outdata);
vect_free(dms);
free(hostname);
vect_free(idispdt);
vect_free(offsets[0]);
vect_free(offsets);
free(datafilenm);
free(outfilenm);
free(outpath);
if (!cmd->nobaryP) {
vect_free(btoa);
vect_free(ttoa);
vect_free(diffbins);
}
MPI_Finalize();
return (0);
}
int main(int argc, char **argv)
{
int index = -1, need_type = 0;
int objs_read, objs_to_read, has_suffix;
long i, j, ct;
char *cptr, *data, *short_filenm, *extension, key = '\n';
FILE *infile;
Cmdline *cmd;
infodata inf;
/* Call usage() if we have no command line arguments */
if (argc == 1) {
Program = argv[0];
usage();
exit(0);
}
/* Parse the command line using the excellent program Clig */
cmd = parseCmdline(argc, argv);
#ifdef DEBUG
showOptionValues();
#endif
//fprintf(stdout, "\n\n PRESTO Binary File Reader\n");
//fprintf(stdout, " by Scott M. Ransom\n\n");
/* Set our index value */
if (cmd->bytP || cmd->sbytP)
index = BYTE;
else if (cmd->fltP || cmd->sfltP)
index = FLOAT;
else if (cmd->dblP || cmd->sdblP)
index = DOUBLE;
else if (cmd->fcxP || cmd->sfcxP)
index = FCPLEX;
else if (cmd->dcxP || cmd->sdcxP)
index = DCPLEX;
else if (cmd->shtP || cmd->sshtP)
index = SHORT;
else if (cmd->igrP || cmd->sigrP)
index = INT;
else if (cmd->lngP || cmd->slngP)
index = LONG;
else if (cmd->rzwP || cmd->srzwP)
index = RZWCAND;
else if (cmd->binP || cmd->sbinP)
index = BINCAND;
else if (cmd->posP || cmd->sposP)
index = POSITION;
else if (cmd->pkmbP)
index = PKMBHDR;
else if (cmd->bcpmP)
index = BCPMHDR;
else if (cmd->wappP)
index = WAPPHDR;
else if (cmd->spigotP)
index = SPIGOTHDR;
else if (cmd->filterbankP)
index = SPECTRAINFO;
#ifdef USELOFAR
else if (cmd->lofarhdf5P)
index = SPECTRAINFO;
#endif
else if (cmd->psrfitsP)
index = SPECTRAINFO;
/* Try to determine the data type from the file name */
if (index == -1) {
has_suffix = split_root_suffix(cmd->argv[0], &short_filenm, &extension);
if (!has_suffix) {
need_type = 1;
} else {
if (strlen(extension) < 2) {
need_type = 1;
} else {
if (0 == strcmp(extension, "dat")) {
index = FLOAT;
fprintf(stdout, "Assuming the data is floating point.\n\n");
} else if (0 == strcmp(extension, "sdat")) {
index = SHORT;
fprintf(stdout, "Assuming the data is short integers.\n\n");
} else if (0 == strcmp(extension, "fft")) {
index = FCPLEX;
fprintf(stdout, "Assuming the data is single precision complex.\n\n");
} else if ((0 == strcmp(extension, "fits")) ||
(0 == strcmp(extension, "sf"))) {
if (strstr(short_filenm, "spigot_5") != NULL) {
cmd->spigotP = 1;
index = SPIGOTHDR;
fprintf(stdout,
"Assuming the data is from the Caltech/NRAO Spigot.\n\n");
} else if (is_PSRFITS(cmd->argv[0])) {
cmd->psrfitsP = 1;
index = SPECTRAINFO;
fprintf(stdout,
"Assuming the data is in PSRFITS format.\n\n");
}
} else if (0 == strcmp(extension, "bcpm1") ||
0 == strcmp(extension, "bcpm2")) {
cmd->bcpmP = 1;
index = BCPMHDR;
fprintf(stdout, "Assuming the data is from a BCPM machine.\n\n");
} else if (0 == strcmp(extension, "pkmb")) {
cmd->pkmbP = 1;
index = PKMBHDR;
fprintf(stdout,
"Assuming the data is from the Parkes Multibeam machine.\n\n");
} else if (0 == strcmp(extension, "fil") || 0 == strcmp(extension, "fb")) {
cmd->filterbankP = 1;
index = SPECTRAINFO;
fprintf(stdout,
"Assuming the data is a SIGPROC filterbank file.\n\n");
} else if (0 == strcmp(extension, "h5")) {
cmd->lofarhdf5P = 1;
index = SPECTRAINFO;
fprintf(stdout,
"Assuming the data is a LOFAR HDF5 file.\n\n");
} else if (isdigit(extension[0]) &&
isdigit(extension[1]) && isdigit(extension[2])) {
cmd->wappP = 1;
index = WAPPHDR;
fprintf(stdout, "Assuming the data is from a WAPP machine.\n\n");
} else if (0 == strcmp(extension, "pos")) {
index = POSITION;
fprintf(stdout,
"Assuming the data contains 'position' structures.\n\n");
} else if (0 == strcmp(extension, "cand")) {
/* A binary or RZW search file? */
if (NULL != (cptr = strstr(cmd->argv[0], "_bin"))) {
index = BINCAND;
fprintf(stdout,
"Assuming the file contains binary candidates.\n\n");
} else if (NULL != (cptr = strstr(cmd->argv[0], "_rzw"))) {
index = RZWCAND;
ct = (long) (cptr - cmd->argv[0]);
fprintf(stdout, "Assuming the file contains 'RZW' candidates.\n");
free(short_filenm);
short_filenm = (char *) malloc(ct + 1);
short_filenm[ct] = '\0';
strncpy(short_filenm, cmd->argv[0], ct);
fprintf(stdout, "\nAttempting to read '%s.inf'. ", short_filenm);
readinf(&inf, short_filenm);
fprintf(stdout, "Successful.\n");
N = (long) (inf.N + DBLCORRECT);
dt = inf.dt;
if (cmd->nphP)
nph = cmd->nph;
else
nph = 1.0;
fprintf(stdout,
"\nUsing N = %ld, dt = %g, and DC Power = %f\n\n",
N, dt, nph);
} else if (NULL != (cptr = strstr(cmd->argv[0], "_ACCEL"))) {
index = RZWCAND;
ct = (long) (cptr - cmd->argv[0]);
fprintf(stdout, "Assuming the file contains 'RZW' candidates.\n");
free(short_filenm);
short_filenm = (char *) malloc(ct + 1);
short_filenm[ct] = '\0';
strncpy(short_filenm, cmd->argv[0], ct);
fprintf(stdout, "\nAttempting to read '%s.inf'. ", short_filenm);
readinf(&inf, short_filenm);
fprintf(stdout, "Successful.\n");
N = (long) (inf.N + DBLCORRECT);
dt = inf.dt;
if (cmd->nphP)
nph = cmd->nph;
else
nph = 1.0;
fprintf(stdout,
"\nUsing N = %ld, dt = %g, and DC Power = %f\n\n",
N, dt, nph);
} else
need_type = 1;
} else
need_type = 1;
}
}
/* If no file extension or if we don't understand the extension, exit */
if (need_type) {
fprintf(stdout, "You must specify a data type for this file.\n\n");
free(short_filenm);
exit(-1);
}
free(short_filenm);
if (has_suffix)
free(extension);
}
if (cmd->index[1] == -1 || cmd->index[1] == 0)
cmd->index[1] = INT_MAX;
if (cmd->index[1] < cmd->index[0]) {
fprintf(stdout, "\nThe high index must be >= the low index.");
fprintf(stdout, " Exiting.\n\n");
exit(-1);
}
// Use new-style backend reading stuff
if (cmd->psrfitsP || cmd->filterbankP || cmd->lofarhdf5P) {
struct spectra_info s;
// Eventually we should use this...
// identify_psrdatatype(struct spectra_info *s, int output);
spectra_info_set_defaults(&s);
if (cmd->psrfitsP) s.datatype=PSRFITS;
if (cmd->filterbankP) s.datatype=SIGPROCFB;
if (cmd->lofarhdf5P) s.datatype=LOFARHDF5;
s.filenames = cmd->argv;
s.num_files = cmd->argc;
s.clip_sigma = 0.0;
s.apply_flipband = s.apply_weight = s.apply_scale = s.apply_offset = -1;
s.remove_zerodm = 0;
read_rawdata_files(&s);
SPECTRAINFO_print(0, (char *)(&s));
printf("\n");
exit(0);
}
if (cmd->spigotP) {
SPIGOT_INFO spigot;
if (read_SPIGOT_header(cmd->argv[0], &spigot)) {
print_SPIGOT_header(&spigot);
printf("\n");
} else {
printf("\n Error reading spigot file!\n\n");
}
exit(0);
}
if (cmd->wappP) {
struct HEADERP *hdr = NULL;
infile = chkfopen(cmd->argv[0], "rb");
hdr = head_parse(infile);
set_WAPP_HEADER_version(hdr);
if (hdr) {
print_WAPP_hdr(hdr);
printf("\n");
} else {
printf("\n Error reading WAPP file!\n\n");
}
exit(0);
}
/* Open the file */
infile = chkfopen(cmd->argv[0], "rb");
if (cmd->fortranP) {
chkfileseek(infile, 1, sizeof(long), SEEK_SET);
}
/* Skip to the correct first object */
if (cmd->index[0] > 0) {
chkfileseek(infile, (long) (cmd->index[0]), type_sizes[index], SEEK_CUR);
}
/* Read the file */
objs_to_read = objs_at_a_time[index];
data = (char *) malloc(type_sizes[index] * objs_at_a_time[index]);
i = cmd->index[0];
do {
if (objs_to_read > cmd->index[1] - i)
objs_to_read = cmd->index[1] - i;
objs_read = chkfread(data, type_sizes[index], objs_to_read, infile);
for (j = 0; j < objs_read; j++)
print_funct_ptrs[index] (i + j, data + j * type_sizes[index]);
/* Just print 1 header for BCPM and WAPP files */
if (index == BCPMHDR || index == WAPPHDR || index == SPIGOTHDR)
break;
i += objs_read;
if (cmd->pageP) {
fflush(NULL);
fprintf(stdout, "\nPress ENTER for next page, or any other key and ");
fprintf(stdout, "then ENTER to exit.\n\n");
key = getchar();
}
} while (!feof(infile) && i < cmd->index[1] && key == '\n');
fflush(NULL);
if (feof(infile)) {
fprintf(stdout, "\nEnd of file.\n\n");
}
free(data);
fclose(infile);
exit(0);
}
int main(int argc, char *argv[])
{
int ii, jj, numbirds;
double lofreq, hifreq;
char *rootfilenm;
birdie *newbird;
GSList *zapped = NULL;
infodata idata;
Cmdline *cmd;
/* Call usage() if we have no command line arguments */
if (argc == 1) {
Program = argv[0];
printf("\n");
usage();
exit(1);
}
/* Parse the command line using the excellent program Clig */
cmd = parseCmdline(argc, argv);
#ifdef DEBUG
showOptionValues();
#endif
printf("\n\n");
printf(" Interactive/Automatic Birdie Zapping Program\n");
printf(" by Scott M. Ransom\n");
printf(" January, 2001\n\n");
if (!cmd->zapP && !cmd->inzapfileP && !cmd->outzapfileP) {
printf("You must specify '-in' and '-out' if you are not\n");
printf("automatically zapping a file (with '-zap').\n\n");
exit(0);
}
{
int hassuffix = 0;
char *suffix;
hassuffix = split_root_suffix(cmd->argv[0], &rootfilenm, &suffix);
if (hassuffix) {
if (strcmp(suffix, "fft") != 0) {
printf("\nInput file ('%s') must be a FFT file ('.fft')!\n\n",
cmd->argv[0]);
free(suffix);
exit(0);
}
free(suffix);
} else {
printf("\nInput file ('%s') must be a FFT file ('.fft')!\n\n",
cmd->argv[0]);
exit(0);
}
}
/* Read the info file */
readinf(&idata, rootfilenm);
if (idata.object) {
printf("Examining %s data from '%s'.\n\n",
remove_whitespace(idata.object), cmd->argv[0]);
} else {
printf("Examining data from '%s'.\n\n", cmd->argv[0]);
}
T = idata.dt * idata.N;
dr = 1.0 / NUMBETWEEN;
if (cmd->zapP) { /* Automatic */
double *bird_lobins, *bird_hibins, hibin;
if (!cmd->zapfileP) {
printf("You must specify a 'zapfile' containing freqs\n");
printf("and widths if you want to write to the FFT file.\n\n");
free(rootfilenm);
exit(0);
}
hibin = idata.N / 2;
/* Read the Standard bird list */
numbirds = get_birdies(cmd->zapfile, T, cmd->baryv,
&bird_lobins, &bird_hibins);
/* Zap the birdies */
fftfile = chkfopen(cmd->argv[0], "rb+");
for (ii = 0; ii < numbirds; ii++) {
if (bird_lobins[ii] >= hibin)
break;
if (bird_hibins[ii] >= hibin)
bird_hibins[ii] = hibin - 1;
zapbirds(bird_lobins[ii], bird_hibins[ii], fftfile, NULL);
}
vect_free(bird_lobins);
vect_free(bird_hibins);
} else { /* Interactive */
int *bird_numharms;
double *bird_basebins;
/* Read the Standard bird list */
numbirds = get_std_birds(cmd->inzapfile, T, cmd->baryv,
&bird_basebins, &bird_numharms);
/* Create our correlation kernel */
{
int numkern;
fcomplex *resp;
khw = r_resp_halfwidth(LOWACC);
numkern = 2 * NUMBETWEEN * khw;
resp = gen_r_response(0.0, NUMBETWEEN, numkern);
kernel = gen_cvect(FFTLEN);
place_complex_kernel(resp, numkern, kernel, FFTLEN);
COMPLEXFFT(kernel, FFTLEN, -1);
vect_free(resp);
}
/* Loop over the birdies */
fftfile = chkfopen(cmd->argv[0], "rb");
cpgstart_x("landscape");
cpgask(0);
for (ii = 0; ii < numbirds; ii++) {
for (jj = 0; jj < bird_numharms[ii]; jj++) {
process_bird(bird_basebins[ii], jj + 1, &lofreq, &hifreq);
if (lofreq && hifreq) {
newbird = birdie_create(lofreq, hifreq, cmd->baryv);
zapped = g_slist_insert_sorted(zapped, newbird, birdie_compare);
}
}
}
cpgclos();
/* Output the birdies */
{
FILE *outfile;
outfile = chkfopen(cmd->outzapfile, "w");
fprintf(outfile, "#\n");
fprintf(outfile,
"# Topocentric birdies found using 'zapbirds' for '%s'\n",
cmd->argv[0]);
fprintf(outfile, "#\n");
fprintf(outfile, "# Frequency (Hz) Width (Hz)\n");
fprintf(outfile, "#\n");
g_slist_foreach(zapped, birdie_print, outfile);
fclose(outfile);
}
printf("\nOutput birdie file is '%s'.\n\n", cmd->outzapfile);
/* Free the memory */
g_slist_foreach(zapped, birdie_free, NULL);
g_slist_free(zapped);
vect_free(kernel);
vect_free(bird_numharms);
vect_free(bird_basebins);
}
fclose(fftfile);
free(rootfilenm);
printf("Done\n\n");
return 0;
}
int main(int argc, char *argv[])
{
float maxpow = 0.0, inx = 0.0, iny = 0.0;
double centerr, offsetf;
int zoomlevel, maxzoom, minzoom, xid, psid;
char *rootfilenm, inchar;
fftpart *lofp;
fftview *fv;
if (argc == 1) {
printf("\nusage: explorefft fftfilename\n\n");
exit(0);
}
printf("\n\n");
printf(" Interactive FFT Explorer\n");
printf(" by Scott M. Ransom\n");
printf(" October, 2001\n");
print_help();
{
int hassuffix = 0;
char *suffix;
hassuffix = split_root_suffix(argv[1], &rootfilenm, &suffix);
if (hassuffix) {
if (strcmp(suffix, "fft") != 0) {
printf("\nInput file ('%s') must be a FFT file ('.fft')!\n\n", argv[1]);
free(suffix);
exit(0);
}
free(suffix);
} else {
printf("\nInput file ('%s') must be a FFT file ('.fft')!\n\n", argv[1]);
exit(0);
}
}
/* Read the info file */
readinf(&idata, rootfilenm);
if (strlen(remove_whitespace(idata.object)) > 0) {
printf("Examining %s data from '%s'.\n\n",
remove_whitespace(idata.object), argv[1]);
} else {
printf("Examining data from '%s'.\n\n", argv[1]);
}
N = idata.N;
T = idata.dt * idata.N;
#ifdef USEMMAP
printf("Memory mapping the input FFT. This may take a while...\n");
mmap_file = open(argv[1], O_RDONLY);
{
int rt;
struct stat buf;
rt = fstat(mmap_file, &buf);
if (rt == -1) {
perror("\nError in fstat() in explorefft.c");
printf("\n");
exit(-1);
}
Nfft = buf.st_size / sizeof(fcomplex);
}
lofp = get_fftpart(0, Nfft);
#else
{
int numamps;
fftfile = chkfopen(argv[1], "rb");
Nfft = chkfilelen(fftfile, sizeof(fcomplex));
numamps = (Nfft > MAXBINS) ? (int) MAXBINS : (int) Nfft;
lofp = get_fftpart(0, numamps);
}
#endif
/* Plot the initial data */
{
int initnumbins = INITIALNUMBINS;
if (initnumbins > Nfft) {
initnumbins = next2_to_n(Nfft) / 2;
zoomlevel = LOGDISPLAYNUM - (int) (log(initnumbins) / log(2.0));
minzoom = zoomlevel;
} else {
zoomlevel = LOGDISPLAYNUM - LOGINITIALNUMBINS;
minzoom = LOGDISPLAYNUM - LOGMAXBINS;
}
maxzoom = LOGDISPLAYNUM - LOGMINBINS;
centerr = initnumbins / 2;
}
fv = get_fftview(centerr, zoomlevel, lofp);
/* Prep the XWIN device for PGPLOT */
xid = cpgopen("/XWIN");
if (xid <= 0) {
free(fv);
#ifdef USEMMAP
close(mmap_file);
#else
fclose(fftfile);
#endif
free_fftpart(lofp);
exit(EXIT_FAILURE);
}
cpgscr(15, 0.4, 0.4, 0.4);
cpgask(0);
cpgpage();
offsetf = plot_fftview(fv, maxpow, 1.0, 0.0, 0);
do {
cpgcurs(&inx, &iny, &inchar);
if (DEBUGOUT)
printf("You pressed '%c'\n", inchar);
switch (inchar) {
case 'A': /* Zoom in */
case 'a':
centerr = (inx + offsetf) * T;
case 'I':
case 'i':
if (DEBUGOUT)
printf(" Zooming in (zoomlevel = %d)...\n", zoomlevel);
if (zoomlevel < maxzoom) {
zoomlevel++;
free(fv);
fv = get_fftview(centerr, zoomlevel, lofp);
cpgpage();
offsetf = plot_fftview(fv, maxpow, 1.0, 0.0, 0);
} else
printf(" Already at maximum zoom level (%d).\n", zoomlevel);
break;
case 'X': /* Zoom out */
case 'x':
case 'O':
case 'o':
if (DEBUGOUT)
printf(" Zooming out (zoomlevel = %d)...\n", zoomlevel);
if (zoomlevel > minzoom) {
zoomlevel--;
free(fv);
fv = get_fftview(centerr, zoomlevel, lofp);
cpgpage();
offsetf = plot_fftview(fv, maxpow, 1.0, 0.0, 0);
} else
printf(" Already at minimum zoom level (%d).\n", zoomlevel);
break;
case '<': /* Shift left 1 full screen */
centerr -= fv->numbins + fv->numbins / 8;
case ',': /* Shift left 1/8 screen */
if (DEBUGOUT)
printf(" Shifting left...\n");
centerr -= fv->numbins / 8;
{ /* Should probably get the previous chunk from the fftfile... */
double lowestr;
lowestr = 0.5 * fv->numbins;
if (centerr < lowestr)
centerr = lowestr;
}
free(fv);
fv = get_fftview(centerr, zoomlevel, lofp);
cpgpage();
offsetf = plot_fftview(fv, maxpow, 1.0, 0.0, 0);
break;
case '>': /* Shift right 1 full screen */
centerr += fv->numbins - fv->numbins / 8;
case '.': /* Shift right 1/8 screen */
if (DEBUGOUT)
printf(" Shifting right...\n");
centerr += fv->numbins / 8;
{ /* Should probably get the next chunk from the fftfile... */
double highestr;
highestr = lofp->rlo + lofp->numamps - 0.5 * fv->numbins;
if (centerr > highestr)
centerr = highestr;
}
free(fv);
fv = get_fftview(centerr, zoomlevel, lofp);
cpgpage();
offsetf = plot_fftview(fv, maxpow, 1.0, 0.0, 0);
break;
case '+': /* Increase height of powers */
case '=':
if (maxpow == 0.0) {
printf(" Auto-scaling is off.\n");
maxpow = 1.1 * fv->maxpow;
}
maxpow = 3.0 / 4.0 * maxpow;
cpgpage();
offsetf = plot_fftview(fv, maxpow, 1.0, 0.0, 0);
break;
case '-': /* Decrease height of powers */
case '_':
if (maxpow == 0.0) {
printf(" Auto-scaling is off.\n");
maxpow = 1.1 * fv->maxpow;
}
maxpow = 4.0 / 3.0 * maxpow;
cpgpage();
offsetf = plot_fftview(fv, maxpow, 1.0, 0.0, 0);
break;
case 'S': /* Auto-scale */
case 's':
if (maxpow == 0.0)
break;
else {
printf(" Auto-scaling is on.\n");
maxpow = 0.0;
cpgpage();
offsetf = plot_fftview(fv, maxpow, 1.0, 0.0, 0);
break;
}
case 'G': /* Goto a frequency */
case 'g':
{
char freqstr[50];
double freq = -1.0;
while (freq < 0.0) {
printf(" Enter the frequency (Hz) to go to:\n");
fgets(freqstr, 50, stdin);
freqstr[strlen(freqstr) - 1] = '\0';
freq = atof(freqstr);
}
offsetf = 0.0;
centerr = freq * T;
printf(" Moving to frequency %.15g.\n", freq);
free(fv);
fv = get_fftview(centerr, zoomlevel, lofp);
cpgpage();
offsetf = plot_fftview(fv, maxpow, 1.0, centerr, 2);
}
break;
case 'H': /* Show harmonics */
case 'h':
{
double retval;
retval = harmonic_loop(xid, centerr, zoomlevel, lofp);
if (retval > 0.0) {
offsetf = 0.0;
centerr = retval;
free(fv);
fv = get_fftview(centerr, zoomlevel, lofp);
cpgpage();
offsetf = plot_fftview(fv, maxpow, 1.0, centerr, 2);
}
}
break;
case '?': /* Print help screen */
print_help();
break;
case 'D': /* Show details about a selected point */
case 'd':
{
double newr;
printf(" Searching for peak near freq = %.7g Hz...\n", (inx + offsetf));
newr = find_peak(inx + offsetf, fv, lofp);
centerr = newr;
free(fv);
fv = get_fftview(centerr, zoomlevel, lofp);
cpgpage();
offsetf = plot_fftview(fv, maxpow, 1.0, centerr, 2);
}
break;
case 'L': /* Load a zaplist */
case 'l':
{
int ii, len;
char filename[200];
double *lobins, *hibins;
printf(" Enter the filename containing the zaplist to load:\n");
fgets(filename, 199, stdin);
len = strlen(filename) - 1;
filename[len] = '\0';
numzaplist = get_birdies(filename, T, 0.0, &lobins, &hibins);
lenzaplist = numzaplist + 20; /* Allow some room to add more */
if (lenzaplist)
free(zaplist);
zaplist = (bird *) malloc(sizeof(bird) * lenzaplist);
for (ii = 0; ii < numzaplist; ii++) {
zaplist[ii].lobin = lobins[ii];
zaplist[ii].hibin = hibins[ii];
}
vect_free(lobins);
vect_free(hibins);
printf("\n");
cpgpage();
offsetf = plot_fftview(fv, maxpow, 1.0, 0.0, 0);
}
break;
case 'Z': /* Add a birdie to a zaplist */
case 'z':
{
int badchoice = 2;
float lox, hix, loy, hiy;
double rs[2];
char choice;
if (numzaplist + 1 > lenzaplist) {
lenzaplist += 10;
zaplist = (bird *) realloc(zaplist, sizeof(bird) * lenzaplist);
}
cpgqwin(&lox, &hix, &loy, &hiy);
printf(" Click the left mouse button on the first frequency limit.\n");
while (badchoice) {
cpgcurs(&inx, &iny, &choice);
if (choice == 'A' || choice == 'a') {
rs[2 - badchoice] = ((double) inx + offsetf) * T;
cpgsave();
cpgsci(7);
cpgmove(inx, 0.0);
cpgdraw(inx, hiy);
cpgunsa();
badchoice--;
if (badchoice == 1)
printf
(" Click the left mouse button on the second frequency limit.\n");
} else {
printf(" Option not recognized.\n");
}
};
if (rs[1] > rs[0]) {
zaplist[numzaplist].lobin = rs[0];
zaplist[numzaplist].hibin = rs[1];
} else {
zaplist[numzaplist].lobin = rs[1];
zaplist[numzaplist].hibin = rs[0];
}
printf(" The new birdie has: f_avg = %.15g f_width = %.15g\n\n",
0.5 * (zaplist[numzaplist].hibin + zaplist[numzaplist].lobin) / T,
(zaplist[numzaplist].hibin - zaplist[numzaplist].lobin) / T);
numzaplist++;
qsort(zaplist, numzaplist, sizeof(bird), compare_birds);
cpgpage();
offsetf = plot_fftview(fv, maxpow, 1.0, 0.0, 0);
}
break;
case 'P': /* Print the current plot */
case 'p':
{
int len;
char filename[200];
printf(" Enter the filename to save the plot as:\n");
fgets(filename, 196, stdin);
len = strlen(filename) - 1;
filename[len + 0] = '/';
filename[len + 1] = 'P';
filename[len + 2] = 'S';
filename[len + 3] = '\0';
psid = cpgopen(filename);
cpgslct(psid);
cpgpap(10.25, 8.5 / 11.0);
cpgiden();
cpgscr(15, 0.8, 0.8, 0.8);
offsetf = plot_fftview(fv, maxpow, 1.0, 0.0, 0);
cpgclos();
cpgslct(xid);
cpgscr(15, 0.4, 0.4, 0.4);
filename[len] = '\0';
printf(" Wrote the plot to the file '%s'.\n", filename);
}
break;
case 'N': /* Changing power normalization */
case 'n':
{
float inx2 = 0.0, iny2 = 0.0;
char choice;
unsigned char badchoice = 1;
printf(" Specify the type of power normalization:\n"
" m,M : Median values determined locally\n"
" d,D : DC frequency amplitude\n"
" r,R : Raw powers (i.e. no normalization)\n"
" u,U : User specified interval (the average powers)\n");
while (badchoice) {
cpgcurs(&inx2, &iny2, &choice);
switch (choice) {
case 'M':
case 'm':
norm_const = 0.0;
maxpow = 0.0;
badchoice = 0;
printf
(" Using local median normalization. Autoscaling is on.\n");
break;
case 'D':
case 'd':
norm_const = 1.0 / r0;
maxpow = 0.0;
badchoice = 0;
printf
(" Using DC frequency (%f) normalization. Autoscaling is on.\n",
r0);
break;
case 'R':
case 'r':
norm_const = 1.0;
maxpow = 0.0;
badchoice = 0;
printf
(" Using raw powers (i.e. no normalization). Autoscaling is on.\n");
break;
case 'U':
case 'u':
{
char choice2;
float xx = inx, yy = iny;
int lor, hir, numr;
double avg, var;
printf
(" Use the left mouse button to select a left and right boundary\n"
" of a region to calculate the average power.\n");
do {
cpgcurs(&xx, &yy, &choice2);
} while (choice2 != 'A' && choice2 != 'a');
lor = (int) ((xx + offsetf) * T);
cpgsci(7);
cpgmove(xx, 0.0);
cpgdraw(xx, 10.0 * fv->maxpow);
do {
cpgcurs(&xx, &yy, &choice2);
} while (choice2 != 'A' && choice2 != 'a');
hir = (int) ((xx + offsetf) * T);
cpgmove(xx, 0.0);
cpgdraw(xx, 10.0 * fv->maxpow);
cpgsci(1);
if (lor > hir) {
int tempr;
tempr = hir;
hir = lor;
lor = tempr;
}
numr = hir - lor + 1;
avg_var(lofp->rawpowers + lor - lofp->rlo, numr, &avg, &var);
printf(" Selection has: average = %.5g\n"
" std dev = %.5g\n", avg, sqrt(var));
norm_const = 1.0 / avg;
maxpow = 0.0;
badchoice = 0;
printf
(" Using %.5g as the normalization constant. Autoscaling is on.\n",
avg);
break;
}
default:
printf(" Unrecognized choice '%c'.\n", choice);
break;
}
}
free(fv);
fv = get_fftview(centerr, zoomlevel, lofp);
cpgpage();
offsetf = plot_fftview(fv, maxpow, 1.0, 0.0, 0);
}
break;
case 'Q': /* Quit */
case 'q':
printf(" Quitting...\n");
free(fv);
cpgclos();
break;
default:
printf(" Unrecognized option '%c'.\n", inchar);
break;
}
} while (inchar != 'Q' && inchar != 'q');
free_fftpart(lofp);
#ifdef USEMMAP
close(mmap_file);
#else
fclose(fftfile);
#endif
if (lenzaplist)
free(zaplist);
printf("Done\n\n");
return 0;
}
int main(int argc, char *argv[])
{
FILE *fftfile, *candfile;
float powargr, powargi, *powers = NULL, *minifft;
float norm, numchunks, *powers_pos;
int nbins, newncand, nfftsizes, fftlen, halffftlen, binsleft;
int numtoread, filepos = 0, loopct = 0, powers_offset, ncand2;
int ii, ct, newper = 0, oldper = 0, numsumpow = 1;
double T, totnumsearched = 0.0, minsig = 0.0, min_orb_p, max_orb_p;
char *rootfilenm, *notes;
fcomplex *data = NULL;
rawbincand tmplist[MININCANDS], *list;
infodata idata;
struct tms runtimes;
double ttim, utim, stim, tott;
Cmdline *cmd;
fftwf_plan fftplan;
/* Prep the timer */
tott = times(&runtimes) / (double) CLK_TCK;
/* Call usage() if we have no command line arguments */
if (argc == 1) {
Program = argv[0];
printf("\n");
usage();
exit(1);
}
/* Parse the command line using the excellent program Clig */
cmd = parseCmdline(argc, argv);
#ifdef DEBUG
showOptionValues();
#endif
printf("\n\n");
printf(" Phase Modulation Pulsar Search Routine\n");
printf(" by Scott M. Ransom\n\n");
{
int hassuffix = 0;
char *suffix;
hassuffix = split_root_suffix(cmd->argv[0], &rootfilenm, &suffix);
if (hassuffix) {
if (strcmp(suffix, "fft") != 0) {
printf("\nInput file ('%s') must be a FFT file ('.fft')!\n\n",
cmd->argv[0]);
free(suffix);
exit(0);
}
free(suffix);
} else {
printf("\nInput file ('%s') must be a FFT file ('.fft')!\n\n",
cmd->argv[0]);
exit(0);
}
}
/* Read the info file */
readinf(&idata, rootfilenm);
T = idata.N * idata.dt;
if (strlen(remove_whitespace(idata.object)) > 0) {
printf("Analyzing '%s' data from '%s'.\n\n",
remove_whitespace(idata.object), cmd->argv[0]);
} else {
printf("Analyzing data from '%s'.\n\n", cmd->argv[0]);
}
min_orb_p = MINORBP;
if (cmd->noaliasP)
max_orb_p = T / 2.0;
else
max_orb_p = T / 1.2;
/* open the FFT file and get its length */
fftfile = chkfopen(cmd->argv[0], "rb");
nbins = chkfilelen(fftfile, sizeof(fcomplex));
/* Check that cmd->maxfft is an acceptable power of 2 */
ct = 4;
ii = 1;
while (ct < MAXREALFFT || ii) {
if (ct == cmd->maxfft)
ii = 0;
ct <<= 1;
}
if (ii) {
printf("\n'maxfft' is out of range or not a power-of-2.\n\n");
exit(1);
}
/* Check that cmd->minfft is an acceptable power of 2 */
ct = 4;
ii = 1;
while (ct < MAXREALFFT || ii) {
if (ct == cmd->minfft)
ii = 0;
ct <<= 1;
}
if (ii) {
printf("\n'minfft' is out of range or not a power-of-2.\n\n");
exit(1);
}
/* Low and high Fourier freqs to check */
if (cmd->floP) {
cmd->rlo = floor(cmd->flo * T);
if (cmd->rlo < cmd->lobin)
cmd->rlo = cmd->lobin;
if (cmd->rlo > cmd->lobin + nbins - 1) {
printf("\nLow frequency to search 'flo' is greater than\n");
printf(" the highest available frequency. Exiting.\n\n");
exit(1);
}
} else {
cmd->rlo = 1.0;
if (cmd->rlo < cmd->lobin)
cmd->rlo = cmd->lobin;
if (cmd->rlo > cmd->lobin + nbins - 1) {
printf("\nLow frequency to search 'rlo' is greater than\n");
printf(" the available number of points. Exiting.\n\n");
exit(1);
}
}
if (cmd->fhiP) {
cmd->rhi = ceil(cmd->fhi * T);
if (cmd->rhi > cmd->lobin + nbins - 1)
cmd->rhi = cmd->lobin + nbins - 1;
if (cmd->rhi < cmd->rlo) {
printf("\nHigh frequency to search 'fhi' is less than\n");
printf(" the lowest frequency to search 'flo'. Exiting.\n\n");
exit(1);
}
} else if (cmd->rhiP) {
if (cmd->rhi > cmd->lobin + nbins - 1)
cmd->rhi = cmd->lobin + nbins - 1;
if (cmd->rhi < cmd->rlo) {
printf("\nHigh frequency to search 'rhi' is less than\n");
printf(" the lowest frequency to search 'rlo'. Exiting.\n\n");
exit(1);
}
}
/* Determine how many different mini-fft sizes we will use */
nfftsizes = 1;
ii = cmd->maxfft;
while (ii > cmd->minfft) {
ii >>= 1;
nfftsizes++;
}
/* Allocate some memory and prep some variables. */
/* For numtoread, the 6 just lets us read extra data at once */
numtoread = 6 * cmd->maxfft;
if (cmd->stack == 0)
powers = gen_fvect(numtoread);
minifft = (float *) fftwf_malloc(sizeof(float) *
(cmd->maxfft * cmd->numbetween + 2));
ncand2 = 2 * cmd->ncand;
list = (rawbincand *) malloc(sizeof(rawbincand) * ncand2);
for (ii = 0; ii < ncand2; ii++)
list[ii].mini_sigma = 0.0;
for (ii = 0; ii < MININCANDS; ii++)
tmplist[ii].mini_sigma = 0.0;
filepos = cmd->rlo - cmd->lobin;
numchunks = (float) (cmd->rhi - cmd->rlo) / numtoread;
printf("Searching...\n");
printf(" Amount complete = %3d%%", 0);
fflush(stdout);
/* Prep FFTW */
read_wisdom();
/* Loop through fftfile */
while ((filepos + cmd->lobin) < cmd->rhi) {
/* Calculate percentage complete */
newper = (int) (loopct / numchunks * 100.0);
if (newper > oldper) {
newper = (newper > 99) ? 100 : newper;
printf("\r Amount complete = %3d%%", newper);
oldper = newper;
fflush(stdout);
}
/* Adjust our search parameters if close to end of zone to search */
binsleft = cmd->rhi - (filepos + cmd->lobin);
if (binsleft < cmd->minfft)
break;
if (binsleft < numtoread) { /* Change numtoread */
numtoread = cmd->maxfft;
while (binsleft < numtoread) {
cmd->maxfft /= 2;
numtoread = cmd->maxfft;
}
}
fftlen = cmd->maxfft;
/* Read from fftfile */
if (cmd->stack == 0) {
data = read_fcomplex_file(fftfile, filepos, numtoread);
for (ii = 0; ii < numtoread; ii++)
powers[ii] = POWER(data[ii].r, data[ii].i);
numsumpow = 1;
} else {
powers = read_float_file(fftfile, filepos, numtoread);
numsumpow = cmd->stack;
}
if (filepos == 0)
powers[0] = 1.0;
/* Chop the powers that are way above the median level */
prune_powers(powers, numtoread, numsumpow);
/* Loop through the different small FFT sizes */
while (fftlen >= cmd->minfft) {
halffftlen = fftlen / 2;
powers_pos = powers;
powers_offset = 0;
/* Create the appropriate FFT plan */
fftplan = fftwf_plan_dft_r2c_1d(cmd->interbinP ? fftlen : 2 * fftlen,
minifft, (fftwf_complex *) minifft,
FFTW_PATIENT);
/* Perform miniffts at each section of the powers array */
while ((numtoread - powers_offset) >
(int) ((1.0 - cmd->overlap) * cmd->maxfft + DBLCORRECT)) {
/* Copy the proper amount and portion of powers into minifft */
memcpy(minifft, powers_pos, fftlen * sizeof(float));
/* For Fourier interpolation use a zeropadded FFT */
if (cmd->numbetween > 1 && !cmd->interbinP) {
for (ii = fftlen; ii < cmd->numbetween * fftlen; ii++)
minifft[ii] = 0.0;
}
/* Perform the minifft */
fftwf_execute(fftplan);
/* Normalize and search the miniFFT */
norm = sqrt(fftlen * numsumpow) / minifft[0];
for (ii = 0; ii < (cmd->interbinP ? fftlen + 1 : 2 * fftlen + 1); ii++)
minifft[ii] *= norm;
search_minifft((fcomplex *) minifft, halffftlen, min_orb_p,
max_orb_p, tmplist, MININCANDS, cmd->harmsum,
cmd->numbetween, idata.N, T,
(double) (powers_offset + filepos + cmd->lobin),
cmd->interbinP ? INTERBIN : INTERPOLATE,
cmd->noaliasP ? NO_CHECK_ALIASED : CHECK_ALIASED);
/* Check if the new cands should go into the master cand list */
for (ii = 0; ii < MININCANDS; ii++) {
if (tmplist[ii].mini_sigma > minsig) {
/* Check to see if another candidate with these properties */
/* is already in the list. */
if (not_already_there_rawbin(tmplist[ii], list, ncand2)) {
list[ncand2 - 1] = tmplist[ii];
minsig = percolate_rawbincands(list, ncand2);
}
} else {
break;
}
/* Mini-fft search for loop */
}
totnumsearched += fftlen;
powers_pos += (int) (cmd->overlap * fftlen);
powers_offset = powers_pos - powers;
/* Position of mini-fft in data set while loop */
}
fftwf_destroy_plan(fftplan);
fftlen >>= 1;
/* Size of mini-fft while loop */
}
if (cmd->stack == 0)
vect_free(data);
else
vect_free(powers);
filepos += (numtoread - (int) ((1.0 - cmd->overlap) * cmd->maxfft));
loopct++;
/* File position while loop */
}
/* Print the final percentage update */
printf("\r Amount complete = %3d%%\n\n", 100);
/* Print the number of frequencies searched */
printf("Searched %.0f pts (including interbins).\n\n", totnumsearched);
printf("Timing summary:\n");
tott = times(&runtimes) / (double) CLK_TCK - tott;
utim = runtimes.tms_utime / (double) CLK_TCK;
stim = runtimes.tms_stime / (double) CLK_TCK;
ttim = utim + stim;
printf(" CPU time: %.3f sec (User: %.3f sec, System: %.3f sec)\n",
ttim, utim, stim);
printf(" Total time: %.3f sec\n\n", tott);
printf("Writing result files and cleaning up.\n");
/* Count how many candidates we actually have */
ii = 0;
while (ii < ncand2 && list[ii].mini_sigma != 0)
ii++;
newncand = (ii > cmd->ncand) ? cmd->ncand : ii;
/* Set our candidate notes to all spaces */
notes = malloc(sizeof(char) * newncand * 18 + 1);
for (ii = 0; ii < newncand; ii++)
strncpy(notes + ii * 18, " ", 18);
/* Check the database for possible known PSR detections */
if (idata.ra_h && idata.dec_d) {
for (ii = 0; ii < newncand; ii++) {
comp_rawbin_to_cand(&list[ii], &idata, notes + ii * 18, 0);
}
}
/* Compare the candidates with each other */
compare_rawbin_cands(list, newncand, notes);
/* Send the candidates to the text file */
file_rawbin_candidates(list, notes, newncand, cmd->harmsum, rootfilenm);
/* Write the binary candidate file */
{
char *candnm;
candnm = (char *) calloc(strlen(rootfilenm) + 15, sizeof(char));
sprintf(candnm, "%s_bin%d.cand", rootfilenm, cmd->harmsum);
candfile = chkfopen(candnm, "wb");
chkfwrite(list, sizeof(rawbincand), (unsigned long) newncand, candfile);
fclose(candfile);
free(candnm);
}
/* Free our arrays and close our files */
if (cmd->stack == 0)
vect_free(powers);
free(list);
fftwf_free(minifft);
free(notes);
free(rootfilenm);
fclose(fftfile);
printf("Done.\n\n");
return (0);
}
int main(int argc, char *argv[])
{
/* Any variable that begins with 't' means topocentric */
/* Any variable that begins with 'b' means barycentric */
FILE *outfile;
float *outdata = NULL;
double tdf = 0.0, dtmp = 0.0, barydispdt = 0.0, dsdt = 0.0;
double *dispdt, *tobsf = NULL, tlotoa = 0.0, blotoa = 0.0;
double max = -9.9E30, min = 9.9E30, var = 0.0, avg = 0.0;
char obs[3], ephem[10], *datafilenm, *outinfonm;
char rastring[50], decstring[50];
int numchan = 1, newper = 0, oldper = 0, nummasked = 0, useshorts = 0;
int numadded = 0, numremoved = 0, padding = 0, *maskchans = NULL, offset = 0;
long slen, ii, numbarypts = 0, worklen = 65536;
long numread = 0, numtowrite = 0, totwrote = 0, datawrote = 0;
long padwrote = 0, padtowrite = 0, statnum = 0;
int numdiffbins = 0, *diffbins = NULL, *diffbinptr = NULL, good_padvals = 0;
int *idispdt;
struct spectra_info s;
infodata idata;
Cmdline *cmd;
mask obsmask;
/* Call usage() if we have no command line arguments */
if (argc == 1) {
Program = argv[0];
printf("\n");
usage();
exit(0);
}
/* Parse the command line using the excellent program Clig */
cmd = parseCmdline(argc, argv);
spectra_info_set_defaults(&s);
s.filenames = cmd->argv;
s.num_files = cmd->argc;
// If we are zeroDMing, make sure that clipping is off.
if (cmd->zerodmP)
cmd->noclipP = 1;
s.clip_sigma = cmd->clip;
// -1 causes the data to determine if we use weights, scales, &
// offsets for PSRFITS or flip the band for any data type where
// we can figure that out with the data
s.apply_flipband = (cmd->invertP) ? 1 : -1;
s.apply_weight = (cmd->noweightsP) ? 0 : -1;
s.apply_scale = (cmd->noscalesP) ? 0 : -1;
s.apply_offset = (cmd->nooffsetsP) ? 0 : -1;
s.remove_zerodm = (cmd->zerodmP) ? 1 : 0;
if (cmd->noclipP) {
cmd->clip = 0.0;
s.clip_sigma = 0.0;
}
if (cmd->ifsP) {
// 0 = default or summed, 1-4 are possible also
s.use_poln = cmd->ifs + 1;
}
if (cmd->ncpus > 1) {
#ifdef _OPENMP
int maxcpus = omp_get_num_procs();
int openmp_numthreads = (cmd->ncpus <= maxcpus) ? cmd->ncpus : maxcpus;
// Make sure we are not dynamically setting the number of threads
omp_set_dynamic(0);
omp_set_num_threads(openmp_numthreads);
printf("Using %d threads with OpenMP\n\n", openmp_numthreads);
#endif
} else {
#ifdef _OPENMP
omp_set_num_threads(1); // Explicitly turn off OpenMP
#endif
}
#ifdef DEBUG
showOptionValues();
#endif
printf("\n\n");
printf(" Pulsar Data Preparation Routine\n");
printf(" Type conversion, de-dispersion, barycentering.\n");
printf(" by Scott M. Ransom\n\n");
if (RAWDATA) {
if (cmd->filterbankP)
s.datatype = SIGPROCFB;
else if (cmd->psrfitsP)
s.datatype = PSRFITS;
} else { // Attempt to auto-identify the data
identify_psrdatatype(&s, 1);
if (s.datatype == SIGPROCFB)
cmd->filterbankP = 1;
else if (s.datatype == PSRFITS)
cmd->psrfitsP = 1;
else if (s.datatype == SDAT)
useshorts = 1;
else if (s.datatype != DAT) {
printf
("Error: Unable to identify input data files. Please specify type.\n\n");
exit(1);
}
}
if (!RAWDATA) {
char *root, *suffix;
/* Split the filename into a rootname and a suffix */
if (split_root_suffix(s.filenames[0], &root, &suffix) == 0) {
printf("\nThe input filename (%s) must have a suffix!\n\n",
s.filenames[0]);
exit(1);
}
printf("Reading input data from '%s'.\n", s.filenames[0]);
printf("Reading information from '%s.inf'.\n\n", root);
/* Read the info file if available */
readinf(&idata, root);
free(root);
free(suffix);
s.files = (FILE **) malloc(sizeof(FILE *));
s.files[0] = chkfopen(s.filenames[0], "rb");
} else {
char description[40];
psrdatatype_description(description, s.datatype);
if (s.num_files > 1)
printf("Reading %s data from %d files:\n", description, s.num_files);
else
printf("Reading %s data from 1 file:\n", description);
for (ii = 0; ii < s.num_files; ii++) {
printf(" '%s'\n", cmd->argv[ii]);
}
printf("\n");
}
/* Determine the other file names and open the output data file */
slen = strlen(cmd->outfile) + 8;
datafilenm = (char *) calloc(slen, 1);
sprintf(datafilenm, "%s.dat", cmd->outfile);
outfile = chkfopen(datafilenm, "wb");
sprintf(idata.name, "%s", cmd->outfile);
outinfonm = (char *) calloc(slen, 1);
sprintf(outinfonm, "%s.inf", cmd->outfile);
if (RAWDATA) {
read_rawdata_files(&s);
if (cmd->ignorechanstrP) {
s.ignorechans = get_ignorechans(cmd->ignorechanstr, 0, s.num_channels-1,
&s.num_ignorechans, &s.ignorechans_str);
if (s.ignorechans_str==NULL) {
s.ignorechans_str = (char *)malloc(strlen(cmd->ignorechanstr)+1);
strcpy(s.ignorechans_str, cmd->ignorechanstr);
}
}
print_spectra_info_summary(&s);
spectra_info_to_inf(&s, &idata);
/* Finish setting up stuff common to all raw formats */
idata.dm = cmd->dm;
worklen = s.spectra_per_subint;
/* If we are offsetting into the file, change inf file start time */
if (cmd->start > 0.0 || cmd->offset > 0) {
if (cmd->start > 0.0) /* Offset in units of worklen */
cmd->offset = (long) (cmd->start *
idata.N / worklen) * worklen;
add_to_inf_epoch(&idata, cmd->offset * idata.dt);
offset_to_spectra(cmd->offset, &s);
printf("Offsetting into the input files by %ld spectra (%.6g sec)\n",
cmd->offset, cmd->offset * idata.dt);
}
if (cmd->maskfileP)
maskchans = gen_ivect(idata.num_chan);
/* Compare the size of the data to the size of output we request */
if (cmd->numoutP) {
dtmp = idata.N;
idata.N = cmd->numout;
writeinf(&idata);
idata.N = dtmp;
} else {
/* Set the output length to a good number if it wasn't requested */
cmd->numoutP = 1;
cmd->numout = choose_good_N((long long)(idata.N/cmd->downsamp));
writeinf(&idata);
printf("Setting a 'good' output length of %ld samples\n", cmd->numout);
}
/* The number of topo to bary time points to generate with TEMPO */
numbarypts = (long) (idata.dt * idata.N * 1.1 / TDT + 5.5) + 1;
// Identify the TEMPO observatory code
{
char *outscope = (char *) calloc(40, sizeof(char));
telescope_to_tempocode(idata.telescope, outscope, obs);
free(outscope);
}
}
/* Read an input mask if wanted */
if (cmd->maskfileP) {
read_mask(cmd->maskfile, &obsmask);
printf("Read mask information from '%s'\n\n", cmd->maskfile);
good_padvals = determine_padvals(cmd->maskfile, &obsmask, s.padvals);
} else {
obsmask.numchan = obsmask.numint = 0;
}
/* Determine our initialization data if we do _not_ have Parkes, */
/* Green Bank BCPM, or Arecibo WAPP data sets. */
if (!RAWDATA) {
/* If we will be barycentering... */
if (!cmd->nobaryP) {
/* The number of topo to bary time points to generate with TEMPO */
numbarypts = (long) (idata.dt * idata.N * 1.1 / TDT + 5.5) + 1;
// Identify the TEMPO observatory code
{
char *outscope = (char *) calloc(40, sizeof(char));
telescope_to_tempocode(idata.telescope, outscope, obs);
free(outscope);
}
}
/* The number of data points to work with at a time */
if (worklen > idata.N)
worklen = idata.N;
worklen = (long) (worklen / 1024) * 1024;
/* If we are offsetting into the file, change inf file start time */
if (cmd->start > 0.0 || cmd->offset > 0) {
if (cmd->start > 0.0) /* Offset in units of worklen */
cmd->offset = (long) (cmd->start *
idata.N / worklen) * worklen;
add_to_inf_epoch(&idata, cmd->offset * idata.dt);
printf("Offsetting into the input files by %ld samples (%.6g sec)\n",
cmd->offset, cmd->offset * idata.dt);
if (useshorts) {
chkfileseek(s.files[0], cmd->offset, sizeof(short), SEEK_SET);
} else {
chkfileseek(s.files[0], cmd->offset, sizeof(float), SEEK_SET);
}
}
/* Set the output length to a good number if it wasn't requested */
if (!cmd->numoutP) {
cmd->numoutP = 1;
cmd->numout = choose_good_N((long long)(idata.N/cmd->downsamp));
printf("Setting a 'good' output length of %ld samples\n", cmd->numout);
}
}
/* Check if we are downsampling */
dsdt = idata.dt * cmd->downsamp;
if (cmd->downsamp > 1) {
printf("Downsampling by a factor of %d\n", cmd->downsamp);
printf("New sample dt = %.10g\n\n", dsdt);
if (worklen % cmd->downsamp) {
printf("Error: The downsample factor (%d) must be a factor of the\n",
cmd->downsamp);
printf(" worklength (%ld). Exiting.\n\n", worklen);
exit(1);
}
}
printf("Writing output data to '%s'.\n", datafilenm);
printf("Writing information to '%s'.\n\n", outinfonm);
/* The topocentric epoch of the start of the data */
tlotoa = (double) idata.mjd_i + idata.mjd_f;
if (!strcmp(idata.band, "Radio") && RAWDATA) {
/* The topocentric spacing between channels */
tdf = idata.chan_wid;
numchan = idata.num_chan;
/* The topocentric observation frequencies */
tobsf = gen_dvect(numchan);
tobsf[0] = idata.freq;
for (ii = 0; ii < numchan; ii++)
tobsf[ii] = tobsf[0] + ii * tdf;
/* The dispersion delays (in time bins) */
dispdt = gen_dvect(numchan); // full float bins
idispdt = gen_ivect(numchan); // nearest integer bins
if (cmd->nobaryP) {
/* Determine our dispersion time delays for each channel */
for (ii = 0; ii < numchan; ii++)
dispdt[ii] = delay_from_dm(cmd->dm, tobsf[ii]);
/* The highest frequency channel gets no delay */
/* All other delays are positive fractions of bin length (dt) */
dtmp = dispdt[numchan - 1];
for (ii = 0; ii < numchan; ii++) {
dispdt[ii] = (dispdt[ii] - dtmp) / idata.dt;
idispdt[ii] = (int) (dispdt[ii] + 0.5);
}
worklen *= ((int) (fabs(dispdt[0])) / worklen) + 1;
}
} else { /* For unknown radio raw data (Why is this here?) */
tobsf = gen_dvect(numchan);
dispdt = gen_dvect(numchan);
idispdt = gen_ivect(numchan);
dispdt[0] = 0.0;
idispdt[0] = 0;
if (!strcmp(idata.band, "Radio")) {
tobsf[0] = idata.freq + (idata.num_chan - 1) * idata.chan_wid;
cmd->dm = idata.dm;
} else {
tobsf[0] = 0.0;
cmd->dm = 0.0;
}
}
if (cmd->nobaryP) { /* Main loop if we are not barycentering... */
/* Allocate our data array */
outdata = gen_fvect(worklen);
printf("Massaging the data ...\n\n");
printf("Amount Complete = 0%%");
do {
if (RAWDATA)
numread = read_psrdata(outdata, worklen, &s, idispdt, &padding,
maskchans, &nummasked, &obsmask);
else if (useshorts)
numread = read_shorts(s.files[0], outdata, worklen, numchan);
else
numread = read_floats(s.files[0], outdata, worklen, numchan);
if (numread == 0)
break;
/* Downsample if requested */
if (cmd->downsamp > 1)
numread = downsample(outdata, numread, cmd->downsamp);
/* Print percent complete */
newper = (int) ((float) totwrote / cmd->numout * 100.0) + 1;
if (newper > oldper) {
printf("\rAmount Complete = %3d%%", newper);
fflush(stdout);
oldper = newper;
}
/* Write the latest chunk of data, but don't */
/* write more than cmd->numout points. */
numtowrite = numread;
if ((totwrote + numtowrite) > cmd->numout)
numtowrite = cmd->numout - totwrote;
chkfwrite(outdata, sizeof(float), numtowrite, outfile);
totwrote += numtowrite;
/* Update the statistics */
if (!padding) {
for (ii = 0; ii < numtowrite; ii++)
update_stats(statnum + ii, outdata[ii], &min, &max, &avg, &var);
statnum += numtowrite;
}
/* Stop if we have written out all the data we need to */
if (totwrote == cmd->numout)
break;
} while (numread);
datawrote = totwrote;
} else { /* Main loop if we are barycentering... */
double avgvoverc = 0.0, maxvoverc = -1.0, minvoverc = 1.0, *voverc = NULL;
double *bobsf = NULL, *btoa = NULL, *ttoa = NULL;
/* What ephemeris will we use? (Default is DE405) */
strcpy(ephem, "DE405");
/* Define the RA and DEC of the observation */
ra_dec_to_string(rastring, idata.ra_h, idata.ra_m, idata.ra_s);
ra_dec_to_string(decstring, idata.dec_d, idata.dec_m, idata.dec_s);
/* Allocate some arrays */
bobsf = gen_dvect(numchan);
btoa = gen_dvect(numbarypts);
ttoa = gen_dvect(numbarypts);
voverc = gen_dvect(numbarypts);
for (ii = 0; ii < numbarypts; ii++)
ttoa[ii] = tlotoa + TDT * ii / SECPERDAY;
/* Call TEMPO for the barycentering */
printf("Generating barycentric corrections...\n");
barycenter(ttoa, btoa, voverc, numbarypts, rastring, decstring, obs, ephem);
for (ii = 0; ii < numbarypts; ii++) {
if (voverc[ii] > maxvoverc)
maxvoverc = voverc[ii];
if (voverc[ii] < minvoverc)
minvoverc = voverc[ii];
avgvoverc += voverc[ii];
}
avgvoverc /= numbarypts;
vect_free(voverc);
blotoa = btoa[0];
printf(" Average topocentric velocity (c) = %.7g\n", avgvoverc);
printf(" Maximum topocentric velocity (c) = %.7g\n", maxvoverc);
printf(" Minimum topocentric velocity (c) = %.7g\n\n", minvoverc);
printf("Collecting and barycentering %s...\n\n", cmd->argv[0]);
/* Determine the initial dispersion time delays for each channel */
for (ii = 0; ii < numchan; ii++) {
bobsf[ii] = doppler(tobsf[ii], avgvoverc);
dispdt[ii] = delay_from_dm(cmd->dm, bobsf[ii]);
}
/* The highest frequency channel gets no delay */
/* All other delays are positive fractions of bin length (dt) */
barydispdt = dispdt[numchan - 1];
for (ii = 0; ii < numchan; ii++) {
dispdt[ii] = (dispdt[ii] - barydispdt) / idata.dt;
idispdt[ii] = (int) (dispdt[ii] + 0.5);
}
if (RAWDATA)
worklen *= ((int) (dispdt[0]) / worklen) + 1;
/* If the data is de-dispersed radio data... */
if (!strcmp(idata.band, "Radio")) {
printf("The DM of %.2f at the barycentric observing freq of %.3f MHz\n",
idata.dm, bobsf[numchan - 1]);
printf(" causes a delay of %f seconds compared to infinite freq.\n",
barydispdt);
printf(" This delay is removed from the barycented times.\n\n");
}
printf("Topocentric epoch (at data start) is:\n");
printf(" %17.11f\n\n", tlotoa);
printf("Barycentric epoch (infinite obs freq at data start) is:\n");
printf(" %17.11f\n\n", blotoa - (barydispdt / SECPERDAY));
/* Convert the bary TOAs to differences from the topo TOAs in */
/* units of bin length (dsdt) rounded to the nearest integer. */
dtmp = (btoa[0] - ttoa[0]);
for (ii = 0; ii < numbarypts; ii++)
btoa[ii] = ((btoa[ii] - ttoa[ii]) - dtmp) * SECPERDAY / dsdt;
{ /* Find the points where we need to add or remove bins */
int oldbin = 0, currentbin;
double lobin, hibin, calcpt;
numdiffbins = abs(NEAREST_LONG(btoa[numbarypts - 1])) + 1;
diffbins = gen_ivect(numdiffbins);
diffbinptr = diffbins;
for (ii = 1; ii < numbarypts; ii++) {
currentbin = NEAREST_LONG(btoa[ii]);
if (currentbin != oldbin) {
if (currentbin > 0) {
calcpt = oldbin + 0.5;
lobin = (ii - 1) * TDT / dsdt;
hibin = ii * TDT / dsdt;
} else {
calcpt = oldbin - 0.5;
lobin = -((ii - 1) * TDT / dsdt);
hibin = -(ii * TDT / dsdt);
}
while (fabs(calcpt) < fabs(btoa[ii])) {
/* Negative bin number means remove that bin */
/* Positive bin number means add a bin there */
*diffbinptr = NEAREST_LONG(LININTERP(calcpt, btoa[ii - 1],
btoa[ii], lobin,
hibin));
diffbinptr++;
calcpt = (currentbin > 0) ? calcpt + 1.0 : calcpt - 1.0;
}
oldbin = currentbin;
}
}
*diffbinptr = cmd->numout; /* Used as a marker */
}
diffbinptr = diffbins;
/* Now perform the barycentering */
printf("Massaging the data...\n\n");
printf("Amount Complete = 0%%");
/* Allocate our data array */
outdata = gen_fvect(worklen);
do { /* Loop to read and write the data */
int numwritten = 0;
double block_avg, block_var;
if (RAWDATA)
numread = read_psrdata(outdata, worklen, &s, idispdt, &padding,
maskchans, &nummasked, &obsmask);
else if (useshorts)
numread = read_shorts(s.files[0], outdata, worklen, numchan);
else
numread = read_floats(s.files[0], outdata, worklen, numchan);
if (numread == 0)
break;
/* Downsample if requested */
if (cmd->downsamp > 1)
numread = downsample(outdata, numread, cmd->downsamp);
/* Determine the approximate local average */
avg_var(outdata, numread, &block_avg, &block_var);
/* Print percent complete */
newper = (int) ((float) totwrote / cmd->numout * 100.0) + 1;
if (newper > oldper) {
printf("\rAmount Complete = %3d%%", newper);
fflush(stdout);
oldper = newper;
}
/* Simply write the data if we don't have to add or */
/* remove any bins from this batch. */
/* OR write the amount of data up to cmd->numout or */
/* the next bin that will be added or removed. */
numtowrite = abs(*diffbinptr) - datawrote;
/* FIXME: numtowrite+totwrote can wrap! */
if ((totwrote + numtowrite) > cmd->numout)
numtowrite = cmd->numout - totwrote;
if (numtowrite > numread)
numtowrite = numread;
chkfwrite(outdata, sizeof(float), numtowrite, outfile);
datawrote += numtowrite;
totwrote += numtowrite;
numwritten += numtowrite;
/* Update the statistics */
if (!padding) {
for (ii = 0; ii < numtowrite; ii++)
update_stats(statnum + ii, outdata[ii], &min, &max, &avg, &var);
statnum += numtowrite;
}
if ((datawrote == abs(*diffbinptr)) && (numwritten != numread) && (totwrote < cmd->numout)) { /* Add/remove a bin */
float favg;
int skip, nextdiffbin;
skip = numtowrite;
do { /* Write the rest of the data after adding/removing a bin */
if (*diffbinptr > 0) {
/* Add a bin */
favg = (float) block_avg;
chkfwrite(&favg, sizeof(float), 1, outfile);
numadded++;
totwrote++;
} else {
/* Remove a bin */
numremoved++;
datawrote++;
numwritten++;
skip++;
}
diffbinptr++;
/* Write the part after the diffbin */
numtowrite = numread - numwritten;
if ((totwrote + numtowrite) > cmd->numout)
numtowrite = cmd->numout - totwrote;
nextdiffbin = abs(*diffbinptr) - datawrote;
if (numtowrite > nextdiffbin)
numtowrite = nextdiffbin;
chkfwrite(outdata + skip, sizeof(float), numtowrite, outfile);
numwritten += numtowrite;
datawrote += numtowrite;
totwrote += numtowrite;
/* Update the statistics and counters */
if (!padding) {
for (ii = 0; ii < numtowrite; ii++)
update_stats(statnum + ii, outdata[skip + ii],
&min, &max, &avg, &var);
statnum += numtowrite;
}
skip += numtowrite;
/* Stop if we have written out all the data we need to */
if (totwrote == cmd->numout)
break;
} while (numwritten < numread);
}
/* Stop if we have written out all the data we need to */
if (totwrote == cmd->numout)
break;
} while (numread);
/* Free the arrays used in barycentering */
vect_free(bobsf);
vect_free(btoa);
vect_free(ttoa);
}
/* Calculate what the amount of padding we need */
if (cmd->numout > totwrote)
padwrote = padtowrite = cmd->numout - totwrote;
/* Write the new info file for the output data */
if (!cmd->nobaryP) {
idata.bary = 1;
idata.mjd_i = (int) floor(blotoa - (barydispdt / SECPERDAY));
idata.mjd_f = blotoa - (barydispdt / SECPERDAY) - idata.mjd_i;
}
if (cmd->downsamp > 1)
idata.dt = dsdt;
update_infodata(&idata, totwrote, padtowrite, diffbins, numdiffbins);
writeinf(&idata);
/* Set the padded points equal to the average data point */
if (idata.numonoff >= 1) {
int jj, index, startpad, endpad;
for (ii = 0; ii < worklen; ii++)
outdata[ii] = avg;
fclose(outfile);
outfile = chkfopen(datafilenm, "rb+");
for (ii = 0; ii < idata.numonoff; ii++) {
index = 2 * ii;
startpad = idata.onoff[index + 1];
if (ii == idata.numonoff - 1)
endpad = idata.N - 1;
else
endpad = idata.onoff[index + 2];
chkfseek(outfile, (startpad + 1) * sizeof(float), SEEK_SET);
padtowrite = endpad - startpad;
for (jj = 0; jj < padtowrite / worklen; jj++)
chkfwrite(outdata, sizeof(float), worklen, outfile);
chkfwrite(outdata, sizeof(float), padtowrite % worklen, outfile);
}
}
vect_free(outdata);
// Close all the raw files and free their vectors
close_rawfiles(&s);
/* Print simple stats and results */
var /= (datawrote - 1);
/* Conver the '.dat' file to '.sdat' if requested */
if (cmd->shortsP) {
FILE *infile;
int safe_convert = 1, bufflen = 65536;
char *sdatafilenm;
float *fbuffer;
short *sbuffer;
offset = (int) (floor(avg));
if ((max - min) > (SHRT_MAX - SHRT_MIN)) {
if ((max - min) < 1.5 * (SHRT_MAX - SHRT_MIN)) {
printf("Warning: There is more dynamic range in the data\n"
" than can be handled perfectly:\n"
" max - min = %.2f - %.2f = %.2f\n"
" Clipping the low values...\n\n", max, min,
max - min);
offset = max - SHRT_MAX;
} else {
printf("Error: There is way too much dynamic range in the data:\n"
" max - min = %.2f - %.2f = %.2f\n"
" Not converting to shorts.\n\n", max, min, max - min);
safe_convert = 0;
}
}
if (safe_convert) {
fbuffer = gen_fvect(bufflen);
sbuffer = gen_svect(bufflen);
sdatafilenm = (char *) calloc(slen, 1);
sprintf(sdatafilenm, "%s.sdat", cmd->outfile);
printf("\n\nConverting floats in '%s' to shorts in '%s'.",
datafilenm, sdatafilenm);
fflush(NULL);
infile = chkfopen(datafilenm, "rb");
outfile = chkfopen(sdatafilenm, "wb");
while ((numread = chkfread(fbuffer, sizeof(float), bufflen, infile))) {
for (ii = 0; ii < numread; ii++)
sbuffer[ii] = (short) (fbuffer[ii] + 1e-20 - offset);
chkfwrite(sbuffer, sizeof(short), numread, outfile);
}
fclose(infile);
fclose(outfile);
remove(datafilenm);
vect_free(fbuffer);
vect_free(sbuffer);
}
}
printf("\n\nDone.\n\nSimple statistics of the output data:\n");
printf(" Data points written: %ld\n", totwrote);
if (padwrote)
printf(" Padding points written: %ld\n", padwrote);
if (!cmd->nobaryP) {
if (numadded)
printf(" Bins added for barycentering: %d\n", numadded);
if (numremoved)
printf(" Bins removed for barycentering: %d\n", numremoved);
}
printf(" Maximum value of data: %.2f\n", max);
printf(" Minimum value of data: %.2f\n", min);
printf(" Data average value: %.2f\n", avg);
printf(" Data standard deviation: %.2f\n", sqrt(var));
if (cmd->shortsP && offset != 0)
printf(" Offset applied to data: %d\n", -offset);
printf("\n");
/* Cleanup */
if (cmd->maskfileP) {
free_mask(obsmask);
vect_free(maskchans);
}
vect_free(tobsf);
vect_free(dispdt);
vect_free(idispdt);
free(outinfonm);
free(datafilenm);
if (!cmd->nobaryP)
vect_free(diffbins);
return (0);
}