int main(int argc, char **argv)
{
int i, j, l, m, c, count, ismag, ncol;
int dl, dm, width, haveFlux, isImg, csys;
int side, ibegin, iend, nstep, useCenter;
int racol, deccol, fluxcol;
int ra1col, dec1col;
int ra2col, dec2col;
int ra3col, dec3col;
int ra4col, dec4col;
long fpixel, nelements;
double rac, decc;
double ra[4], dec[4];
double x, y, z;
double x0, y0, z0;
double x1, y1, z1;
double oxpix, oypix, equinox;
int offscl;
double ilon;
double ilat;
double pixscale, len, sideLength, dtr;
double offset;
double xn, yn, zn;
double ran, decn;
double sina, cosa;
double sind, cosd;
double a11, a12, a13;
double a21, a22, a23;
double a31, a32, a33;
double x0p, y0p, z0p;
double x1p, y1p, z1p;
double lon0, lon1;
double xp, yp;
double lon;
double pixel_value;
double weights[5][5];
double weights3[5][5] = {{0.0, 0.0, 0.0, 0.0, 0.0},
{0.0, 0.1, 0.2, 0.1, 0.0},
{0.0, 0.2, 1.0, 0.2, 0.0},
{0.0, 0.1, 0.2, 0.1, 0.0},
{0.0, 0.0, 0.0, 0.0, 0.0}};
double weights5[5][5] = {{0.0, 0.1, 0.2, 0.1, 0.0},
{0.1, 0.3, 0.5, 0.3, 0.1},
{0.2, 0.5, 1.0, 0.5, 0.2},
{0.1, 0.3, 0.5, 0.3, 0.1},
{0.0, 0.1, 0.2, 0.1, 0.0}};
double **data;
int status = 0;
char input_file [MAXSTR];
char colname [MAXSTR];
char output_file [MAXSTR];
char template_file[MAXSTR];
int bitpix = DOUBLE_IMG;
long naxis = 2;
double sumweights;
double refmag;
dtr = atan(1.0)/45.;
/***************************************/
/* Process the command-line parameters */
/***************************************/
ismag = 0;
opterr = 0;
useCenter = 0;
strcpy(colname, "");
while ((c = getopt(argc, argv, "pm:d:w:c:")) != EOF)
{
switch (c)
{
case 'm':
ismag = 1;
refmag = atof(optarg);
break;
case 'd':
debug = debugCheck(optarg);
break;
case 'w':
width = atoi(optarg);
break;
case 'c':
strcpy(colname, optarg);
break;
case 'p':
useCenter = 1;
break;
default:
printf("[struct stat=\"ERROR\", msg=\"Usage: %s [-c column][-m refmag][-d level][-w size] in.tbl out.fits hdr.template\"]\n", argv[0]);
exit(1);
break;
}
}
if (argc - optind < 3)
{
printf("[struct stat=\"ERROR\", msg=\"Usage: %s [-c column][-m refmag][-d level][-w size] in.tbl out.fits hdr.template\"]\n", argv[0]);
exit(1);
}
strcpy(input_file, argv[optind]);
strcpy(output_file, argv[optind+1]);
strcpy(template_file, argv[optind+2]);
if(debug >= 1)
{
printf("input_file = [%s]\n", input_file);
printf("colname = [%s]\n", colname);
printf("output_file = [%s]\n", output_file);
printf("template_file = [%s]\n", template_file);
printf("width = %d\n", width);
printf("ismag = %d\n", ismag);
fflush(stdout);
}
/********************************************/
/* Set the weights for spreading the points */
/********************************************/
sumweights = 0.;
for(i=0; i<5; ++i)
{
for(j=0; j<5; ++j)
{
if(width == 3)
sumweights += weights3[i][j];
else if(width == 5)
sumweights += weights5[i][j];
}
}
for(i=0; i<5; ++i)
{
for(j=0; j<5; ++j)
{
if(width == 3)
weights[i][j] = weights3[i][j]/sumweights;
else if(width == 5)
weights[i][j] = weights5[i][j]/sumweights;
else
weights[i][j] = 0.;
}
}
if(width != 3 && width != 5)
weights[2][2] = 1.;
/************************************************/
/* Open the table file and find the data column */
/************************************************/
ncol = topen(input_file);
if(ncol <= 0)
{
printf("[struct stat=\"ERROR\", msg=\"Can't open input table %s\"]\n", input_file);
exit(0);
}
racol = tcol( "ra");
deccol = tcol("dec");
ra1col = tcol( "ra1");
dec1col = tcol("dec1");
ra2col = tcol( "ra2");
dec2col = tcol("dec2");
ra3col = tcol( "ra3");
dec3col = tcol("dec3");
ra4col = tcol( "ra4");
dec4col = tcol("dec4");
haveFlux = 1;
if(strlen(colname) == 0)
haveFlux = 0;
else
fluxcol = tcol(colname);
isImg = 1;
if(ra1col < 0 || dec1col < 0
|| ra2col < 0 || dec2col < 0
|| ra3col < 0 || dec3col < 0
|| ra4col < 0 || dec4col < 0)
isImg = 0;
if(useCenter)
isImg = 0;
if(!isImg)
{
if(racol < 0)
{
printf("[struct stat=\"ERROR\", msg=\"Can't find column 'ra'\"]\n");
exit(0);
}
if(deccol < 0)
{
printf("[struct stat=\"ERROR\", msg=\"Can't find column 'dec'\"]\n");
exit(0);
}
}
if(haveFlux && fluxcol < 0)
{
printf("[struct stat=\"ERROR\", msg=\"Can't find column '%s'\"]\n", colname);
exit(0);
}
/*************************************************/
/* Process the output header template to get the */
/* image size, coordinate system and projection */
/*************************************************/
readTemplate(template_file);
pixscale = fabs(output.wcs->xinc);
if(fabs(output.wcs->yinc) > pixscale)
pixscale = fabs(output.wcs->yinc);
csys = EQUJ;
if(strncmp(output.wcs->c1type, "RA", 2) == 0)
csys = EQUJ;
if(strncmp(output.wcs->c1type, "GLON", 4) == 0)
csys = GAL;
if(strncmp(output.wcs->c1type, "ELON", 4) == 0)
csys = ECLJ;
equinox = output.wcs->equinox;
if(debug >= 1)
{
printf("output.naxes[0] = %ld\n", output.naxes[0]);
printf("output.naxes[1] = %ld\n", output.naxes[1]);
printf("output.sys = %d\n", output.sys);
printf("output.epoch = %-g\n", output.epoch);
printf("output proj = %s\n", output.wcs->ptype);
printf("output crval[0] = %-g\n", output.wcs->crval[0]);
printf("output crval[1] = %-g\n", output.wcs->crval[1]);
printf("output crpix[0] = %-g\n", output.wcs->crpix[0]);
printf("output crpix[1] = %-g\n", output.wcs->crpix[1]);
printf("output cdelt[0] = %-g\n", output.wcs->cdelt[0]);
printf("output cdelt[1] = %-g\n", output.wcs->cdelt[1]);
fflush(stdout);
}
/***********************************************/
/* Allocate memory for the output image pixels */
/***********************************************/
data = (double **)malloc(output.naxes[1] * sizeof(double *));
data[0] = (double *)malloc(output.naxes[0] * output.naxes[1] * sizeof(double));
if(debug >= 1)
{
printf("%ld bytes allocated for image pixels\n",
output.naxes[0] * output.naxes[1] * sizeof(double));
fflush(stdout);
}
/**********************************************************/
/* Initialize pointers to the start of each row of pixels */
/**********************************************************/
for(i=1; i<output.naxes[1]; i++)
data[i] = data[i-1] + output.naxes[0];
if(debug >= 1)
{
printf("pixel line pointers populated\n");
fflush(stdout);
}
for (j=0; j<output.naxes[1]; ++j)
{
for (i=0; i<output.naxes[0]; ++i)
{
data[j][i] = 0.;
}
}
/************************/
/* Create the FITS file */
/************************/
remove(output_file);
if(fits_create_file(&output.fptr, output_file, &status))
printFitsError(status);
/*********************************************************/
/* Create the FITS image. All the required keywords are */
/* handled automatically. */
/*********************************************************/
if (fits_create_img(output.fptr, bitpix, naxis, output.naxes, &status))
printFitsError(status);
if(debug >= 1)
{
printf("FITS image created (not yet populated)\n");
fflush(stdout);
}
/*****************************/
/* Loop over the input files */
/*****************************/
time(&currtime);
start = currtime;
/*******************/
/* For each source */
/*******************/
count = 0;
while(tread() >= 0)
{
++count;
if(isImg)
{
if(debug && count/1000*1000 == count)
{
printf("%9d image outlines processed\n", count);
fflush(stdout);
}
ra [0] = atof(tval( ra1col));
dec[0] = atof(tval(dec1col));
ra [1] = atof(tval( ra2col));
dec[1] = atof(tval(dec2col));
ra [2] = atof(tval( ra3col));
dec[2] = atof(tval(dec3col));
ra [3] = atof(tval( ra4col));
dec[3] = atof(tval(dec4col));
for(side=0; side<4; ++side)
{
ibegin = side;
iend = (side+1)%4;
x0 = cos(ra[ibegin]*dtr) * cos(dec[ibegin]*dtr);
y0 = sin(ra[ibegin]*dtr) * cos(dec[ibegin]*dtr);
z0 = sin(dec[ibegin]*dtr);
x1 = cos(ra[iend]*dtr) * cos(dec[iend]*dtr);
y1 = sin(ra[iend]*dtr) * cos(dec[iend]*dtr);
z1 = sin(dec[iend]*dtr);
xn = y0*z1 - z0*y1;
yn = z0*x1 - x0*z1;
zn = x0*y1 - y0*x1;
len = sqrt(xn*xn + yn*yn + zn*zn);
xn = xn / len;
yn = yn / len;
zn = zn / len;
ran = atan2(yn, xn);
decn = asin(zn);
sina = sin(ran);
cosa = cos(ran);
sind = sin(decn);
cosd = cos(decn);
a11 = cosa*sind;
a12 = sina*sind;
a13 = -cosd;
a21 = -sina;
a22 = cosa;
a23 = 0.;
a31 = cosa*cosd;
a32 = sina*cosd;
a33 = sind;
x0p = a11*x0 + a12*y0 + a13*z0;
y0p = a21*x0 + a22*y0 + a23*z0;
z0p = a31*x0 + a32*y0 + a33*z0;
x1p = a11*x1 + a12*y1 + a13*z1;
y1p = a21*x1 + a22*y1 + a23*z1;
z1p = a31*x1 + a32*y1 + a33*z1;
lon0 = atan2(y0p, x0p);
lon1 = atan2(y1p, x1p);
if(fabs(lon1-lon0)/dtr > 180.)
{
if(lon0 < 0.) lon0 += 360.*dtr;
if(lon1 < 0.) lon1 += 360.*dtr;
}
sideLength = acos(x0*x1 + y0*y1 + z0*z1) / dtr;
offset = pixscale/2.*dtr;
if(lon0 > lon1)
offset = -offset;
nstep = (lon1 - lon0)/offset;
lon = lon0;
for(i=0; i<nstep; ++i)
{
lon += offset;
xp = cos(lon);
yp = sin(lon);
x = a11*xp + a21*yp;
y = a12*xp + a22*yp;
z = a13*xp + a23*yp;
rac = atan2(y,x)/dtr;
decc = asin(z)/dtr;
convertCoordinates (EQUJ, 2000., rac, decc,
csys, equinox, &ilon, &ilat, 0.);
offscl = 0;
wcs2pix(output.wcs, ilon, ilat, &oxpix, &oypix, &offscl);
fixxy(&oxpix, &oypix, &offscl);
if(haveFlux)
pixel_value = atof(tval(fluxcol));
else
pixel_value = 1;
l = (int)(oxpix + 0.5) - 1;
m = (int)(oypix + 0.5) - 1;
if(!offscl)
data[m][l] = pixel_value;
}
}
}
else
{
if(debug && count/1000*1000 == count)
{
printf("%9d sources processed\n", count);
fflush(stdout);
}
rac = atof(tval(racol));
decc = atof(tval(deccol));
convertCoordinates (EQUJ, 2000., rac, decc,
csys, equinox, &ilon, &ilat, 0.);
if(haveFlux)
pixel_value = atof(tval(fluxcol));
else
pixel_value = 1;
if(ismag)
pixel_value = pow(10., 0.4 * (refmag - pixel_value));
wcs2pix(output.wcs, ilon, ilat, &oxpix, &oypix, &offscl);
if(pixel_value < 1.e10)
{
if(debug >= 3)
{
printf(" value = %11.3e at coord = (%12.8f,%12.8f)", pixel_value, ilon, ilat);
if(offscl)
{
printf(" -> opix = (%7.1f,%7.1f) OFF SCALE\n",
oxpix, oypix);
fflush(stdout);
}
else
{
printf(" -> opix = (%7.1f,%7.1f)\n",
oxpix, oypix);
fflush(stdout);
}
}
else if(pixel_value > 1000000.)
{
printf(" value = %11.3e at coord = (%12.8f,%12.8f)", pixel_value, ilon, ilat);
if(offscl)
{
printf(" -> opix = (%7.1f,%7.1f) OFF SCALE\n",
oxpix, oypix);
fflush(stdout);
}
else
{
printf(" -> opix = (%7.1f,%7.1f)\n",
oxpix, oypix);
fflush(stdout);
}
}
if(!offscl)
{
l = (int)(oxpix + 0.5) - 1;
m = (int)(oypix + 0.5) - 1;
if(l < 0 || m < 0 || l >= output.naxes[0] || m >= output.naxes[1])
{
/*
printf("ERROR: l=%d, m=%d\n", l, m);
fflush(stdout);
*/
}
else
{
for(dl=-2; dl<=2; ++dl)
{
if(l+dl < 0 || l+dl>= output.naxes[0])
continue;
for(dm=-2; dm<=2; ++dm)
{
if(m+dm < 0 || m+dm>= output.naxes[1])
continue;
data[m+dm][l+dl] += weights[dm+2][dl+2] * pixel_value;
}
}
}
}
}
}
}
/************************/
/* Write the image data */
/************************/
fpixel = 1;
nelements = output.naxes[0] * output.naxes[1];
if (fits_write_img(output.fptr, TDOUBLE, fpixel, nelements, data[0], &status))
printFitsError(status);
if(debug >= 1)
{
printf("Data array written to FITS image\n");
fflush(stdout);
}
/*************************************/
/* Add keywords from a template file */
/*************************************/
if(fits_write_key_template(output.fptr, template_file, &status))
printFitsError(status);
if(debug >= 1)
{
printf("Template keywords written to FITS image\n");
fflush(stdout);
}
/***********************/
/* Close the FITS file */
/***********************/
if(fits_close_file(output.fptr, &status))
printFitsError(status);
if(debug >= 1)
{
printf("FITS image finalized\n");
fflush(stdout);
}
time(&currtime);
printf("[struct stat=\"OK\", time=%d]\n",
(int)(currtime - start));
fflush(stdout);
exit(0);
}
int main(int argc, char **argv)
{
int i, j, c, ifile, status;
long fpixel[4], nelements;
int nullcnt;
int imin, jmin, haveMinMax;
int imax, jmax;
int istart, iend, ilength;
int jstart, jend, jlength;
double *buffer, *abuffer;
double datamin, datamax;
double areamin, areamax;
int narea1, narea2;
double avearea1, avearea2;
double maxarea1, maxarea2;
double pixel_value;
double **data;
double **area;
char template_file[MAXSTR];
char line [MAXSTR];
char infile[2][MAXSTR];
char inarea[2][MAXSTR];
/*************************************************/
/* Initialize output FITS basic image parameters */
/*************************************************/
int bitpix = DOUBLE_IMG;
long naxis = 2;
/************************************************/
/* Make a NaN value to use setting blank pixels */
/************************************************/
union
{
double d;
char c[8];
}
value;
double nan;
for(i=0; i<8; ++i)
value.c[i] = 255;
nan = value.d;
/***************************************/
/* Process the command-line parameters */
/***************************************/
debug = 0;
noAreas = 0;
coverageLimit = 0.0001;
opterr = 0;
fstatus = stdout;
while ((c = getopt(argc, argv, "nc:d:s:")) != EOF)
{
switch (c)
{
case 'n':
noAreas = 1;
break;
case 'c':
coverageLimit = atof(optarg);
break;
case 'd':
debug = debugCheck(optarg);
break;
case 's':
if((fstatus = fopen(optarg, "w+")) == (FILE *)NULL)
{
printf("[struct stat=\"ERROR\", msg=\"Cannot open status file: %s\"]\n",
optarg);
exit(1);
}
break;
default:
printf("[struct stat=\"ERROR\", msg=\"Usage: %s [-d level] [-n(o-areas)] [-s statusfile] in1.fits in2.fits out.fits hdr.template\"]\n", argv[0]);
exit(1);
break;
}
}
if (argc - optind < 4)
{
printf("[struct stat=\"ERROR\", msg=\"Usage: %s [-d level] [-n(o-areas)] [-s statusfile] in1.fits in2.fits out.fits hdr.template\"]\n", argv[0]);
exit(1);
}
strcpy(input_file1, argv[optind]);
strcpy(input_file2, argv[optind + 1]);
strcpy(output_file, argv[optind + 2]);
strcpy(template_file, argv[optind + 3]);
checkHdr(template_file, 1, 0);
if(strlen(output_file) > 5 &&
strncmp(output_file+strlen(output_file)-5, ".fits", 5) == 0)
output_file[strlen(output_file)-5] = '\0';
strcpy(output_area_file, output_file);
strcat(output_file, ".fits");
strcat(output_area_file, "_area.fits");
if(debug >= 1)
{
printf("input_file1 = [%s]\n", input_file1);
printf("input_file2 = [%s]\n", input_file2);
printf("output_file = [%s]\n", output_file);
printf("output_area_file = [%s]\n", output_area_file);
printf("template_file = [%s]\n", template_file);
fflush(stdout);
}
/****************************/
/* Get the input file names */
/****************************/
if(strlen(input_file1) > 5
&& strcmp(input_file1+strlen(input_file1)-5, ".fits") == 0)
{
strcpy(line, input_file1);
line[strlen(line)-5] = '\0';
strcpy(infile[0], line);
strcat(infile[0], ".fits");
strcpy(inarea[0], line);
strcat(inarea[0], "_area.fits");
}
else
{
strcpy(infile[0], input_file1);
strcat(infile[0], ".fits");
strcpy(inarea[0], input_file1);
strcat(inarea[0], "_area.fits");
}
if(strlen(input_file2) > 5
&& strcmp(input_file2+strlen(input_file2)-5, ".fits") == 0)
{
strcpy(line, input_file2);
line[strlen(line)-5] = '\0';
strcpy(infile[1], line);
strcat(infile[1], ".fits");
strcpy(inarea[1], line);
strcat(inarea[1], "_area.fits");
}
else
{
strcpy(infile[1], input_file2);
strcat(infile[1], ".fits");
strcpy(inarea[1], input_file2);
strcat(inarea[1], "_area.fits");
}
if(debug >= 1)
{
printf("\ninput files:\n\n");
printf(" [%s][%s]\n", infile[0], inarea[0]);
printf(" [%s][%s]\n", infile[1], inarea[1]);
printf("\n");
}
/*************************************************/
/* Process the output header template to get the */
/* image size, coordinate system and projection */
/*************************************************/
readTemplate(template_file);
if(debug >= 1)
{
printf("output.naxes[0] = %ld\n", output.naxes[0]);
printf("output.naxes[1] = %ld\n", output.naxes[1]);
printf("output.crpix1 = %-g\n", output.crpix1);
printf("output.crpix2 = %-g\n", output.crpix2);
fflush(stdout);
}
/*****************************************************/
/* We open the two input files briefly to get enough */
/* information to determine the region of overlap */
/* (for memory allocation purposes) */
/*****************************************************/
readFits(infile[0], inarea[0]);
imin = output.crpix1 - input.crpix1;
jmin = output.crpix2 - input.crpix2;
imax = imin + input.naxes[0];
jmax = jmin + input.naxes[1];
istart = imin;
iend = imax;
jstart = jmin;
jend = jmax;
if(debug >= 1)
{
printf("\nFile 1:\n");
printf("input.naxes[0] = %ld\n", input.naxes[0]);
printf("input.naxes[1] = %ld\n", input.naxes[1]);
printf("input.crpix1 = %-g\n", input.crpix1);
printf("input.crpix2 = %-g\n", input.crpix2);
printf("imin = %d\n", imin);
printf("imax = %d\n", imax);
printf("jmin = %d\n", jmin);
printf("jmax = %d\n\n", jmax);
printf("istart = %d\n", istart);
printf("iend = %d\n", iend);
printf("jstart = %d\n", jstart);
printf("jend = %d\n", jend);
fflush(stdout);
}
status = 0;
if(fits_close_file(input.fptr, &status))
printFitsError(status);
if(!noAreas)
{
if(fits_close_file(input_area.fptr, &status))
printFitsError(status);
}
readFits(infile[1], inarea[1]);
imin = output.crpix1 - input.crpix1;
jmin = output.crpix2 - input.crpix2;
imax = imin + input.naxes[0];
jmax = jmin + input.naxes[1];
if(debug >= 1)
{
printf("\nFile 2:\n");
printf("input.naxes[0] = %ld\n", input.naxes[0]);
printf("input.naxes[1] = %ld\n", input.naxes[1]);
printf("input.crpix1 = %-g\n", input.crpix1);
printf("input.crpix2 = %-g\n", input.crpix2);
printf("imin = %d\n", imin);
printf("imax = %d\n", imax);
printf("jmin = %d\n", jmin);
printf("jmax = %d\n", jmax);
printf("istart = %d\n\n", istart);
printf("iend = %d\n", iend);
printf("jstart = %d\n", jstart);
printf("jend = %d\n", jend);
printf("\n");
fflush(stdout);
}
if(imin > istart) istart = imin;
if(imax < iend ) iend = imax;
if(jmin > jstart) jstart = jmin;
if(jmax < jend ) jend = jmax;
if(istart < 0) istart = 0;
if(jstart < 0) jstart = 0;
if(iend > output.naxes[0]-1) iend = output.naxes[0]-1;
if(jend > output.naxes[1]-1) jend = output.naxes[1]-1;
ilength = iend - istart + 1;
jlength = jend - jstart + 1;
if(debug >= 1)
{
printf("\nComposite:\n");
printf("input.naxes[0] = %ld\n", input.naxes[0]);
printf("input.naxes[1] = %ld\n", input.naxes[1]);
printf("input.crpix1 = %-g\n", input.crpix1);
printf("input.crpix2 = %-g\n", input.crpix2);
printf("istart = %d\n", istart);
printf("iend = %d\n", iend);
printf("jstart = %d\n", jstart);
printf("jend = %d\n", jend);
printf("ilength = %d\n", ilength);
printf("jlength = %d\n", jlength);
printf("\n");
fflush(stdout);
}
if(fits_close_file(input.fptr, &status))
printFitsError(status);
if(!noAreas)
{
if(fits_close_file(input_area.fptr, &status))
printFitsError(status);
}
/*********************/
/* Check for overlap */
/*********************/
if(ilength <= 0 || jlength <= 0)
printError("Images don't overlap");
/***********************************************/
/* Allocate memory for the output image pixels */
/***********************************************/
data = (double **)malloc(jlength * sizeof(double *));
for(j=0; j<jlength; ++j)
data[j] = (double *)malloc(ilength * sizeof(double));
if(debug >= 1)
{
printf("%d bytes allocated for image pixels\n",
ilength * jlength * sizeof(double));
fflush(stdout);
}
/****************************/
/* Initialize data to zeros */
/****************************/
for (j=0; j<jlength; ++j)
{
for (i=0; i<ilength; ++i)
{
data[j][i] = 0.;
}
}
/**********************************************/
/* Allocate memory for the output pixel areas */
/**********************************************/
area = (double **)malloc(jlength * sizeof(double *));
for(j=0; j<jlength; ++j)
area[j] = (double *)malloc(ilength * sizeof(double));
if(debug >= 1)
{
printf("%d bytes allocated for pixel areas\n",
ilength * jlength * sizeof(double));
fflush(stdout);
}
/****************************/
/* Initialize area to zeros */
/****************************/
for (j=0; j<jlength; ++j)
{
for (i=0; i<ilength; ++i)
{
area[j][i] = 0.;
}
}
/***************************/
/* For the two input files */
/***************************/
time(&currtime);
start = currtime;
avearea1 = 0.;
avearea2 = 0.;
maxarea1 = 0.;
maxarea2 = 0.;
narea1 = 0.;
narea2 = 0.;
for(ifile=0; ifile<2; ++ifile)
{
/************************/
/* Read the input image */
/************************/
readFits(infile[ifile], inarea[ifile]);
imin = output.crpix1 - input.crpix1;
jmin = output.crpix2 - input.crpix2;
if(debug >= 1)
{
printf("\nflux file = %s\n", infile[ifile]);
printf("input.naxes[0] = %ld\n", input.naxes[0]);
printf("input.naxes[1] = %ld\n", input.naxes[1]);
printf("input.crpix1 = %-g\n", input.crpix1);
printf("input.crpix2 = %-g\n", input.crpix2);
printf("\narea file = %s\n", inarea[ifile]);
printf("input_area.naxes[0] = %ld\n", input.naxes[0]);
printf("input_area.naxes[1] = %ld\n", input.naxes[1]);
printf("input_area.crpix1 = %-g\n", input.crpix1);
printf("input_area.crpix2 = %-g\n", input.crpix2);
printf("\nimin = %d\n", imin);
printf("jmin = %d\n\n", jmin);
fflush(stdout);
}
/**********************************************************/
/* Create the output array by processing the input pixels */
/**********************************************************/
buffer = (double *)malloc(input.naxes[0] * sizeof(double));
abuffer = (double *)malloc(input.naxes[0] * sizeof(double));
fpixel[0] = 1;
fpixel[1] = 1;
fpixel[2] = 1;
fpixel[3] = 1;
nelements = input.naxes[0];
status = 0;
/*****************************/
/* Loop over the input lines */
/*****************************/
for (j=0; j<input.naxes[1]; ++j)
{
if(debug >= 2)
{
printf("\rProcessing input row %5d ", j);
fflush(stdout);
}
/***********************************/
/* Read a line from the input file */
/***********************************/
if(fits_read_pix(input.fptr, TDOUBLE, fpixel, nelements, NULL,
buffer, &nullcnt, &status))
printFitsError(status);
if(noAreas)
{
for(i=0; i<input.naxes[0]; ++i)
abuffer[i] = 1.;
}
else
{
if(fits_read_pix(input_area.fptr, TDOUBLE, fpixel, nelements, NULL,
abuffer, &nullcnt, &status))
printFitsError(status);
}
++fpixel[1];
/************************/
/* For each input pixel */
/************************/
for (i=0; i<input.naxes[0]; ++i)
{
pixel_value = buffer[i] * abuffer[i];
if(debug >= 4)
{
printf("input: line %5d / pixel %5d, value = %10.2e (%10.2e) [array: %5d %5d]\n",
j, i, buffer[i], abuffer[i], j+jmin-jstart, i+imin-istart);
fflush(stdout);
}
if(i+imin < istart) continue;
if(j+jmin < jstart) continue;
if(i+imin >= iend) continue;
if(j+jmin >= jend) continue;
if(debug >= 3)
{
printf("keep: line %5d / pixel %5d, value = %10.2e (%10.2e) [array: %5d %5d]\n",
j, i, buffer[i], abuffer[i], j+jmin-jstart, i+imin-istart);
fflush(stdout);
}
if(ifile == 0)
{
if(mNaN(buffer[i])
|| abuffer[i] <= 0.)
{
if(debug >= 5)
{
printf("First file. Setting data to NaN and area to zero.\n");
fflush(stdout);
}
data[j+jmin-jstart][i+imin-istart] = nan;
area[j+jmin-jstart][i+imin-istart] = 0.;
if(debug >= 5)
{
printf("done.\n");
fflush(stdout);
}
continue;
}
else
{
if(debug >= 5)
{
printf("First file. Setting data to pixel value.\n");
fflush(stdout);
}
data[j+jmin-jstart][i+imin-istart] = pixel_value;
area[j+jmin-jstart][i+imin-istart] = abuffer[i];
++narea1;
avearea1 += abuffer[i];
if(abuffer[i] > maxarea1)
maxarea1 = abuffer[i];
if(debug >= 5)
{
printf("done.\n");
fflush(stdout);
}
}
}
else
{
if(mNaN(buffer[i])
|| abuffer[i] <= 0.
|| data[j+jmin-jstart][i+imin-istart] == nan
|| area[j+jmin-jstart][i+imin-istart] == 0.)
{
if(debug >= 5)
{
printf("Second file. One or the other value is NaN (or zero area).\n");
fflush(stdout);
}
data[j+jmin-jstart][i+imin-istart] = nan;
area[j+jmin-jstart][i+imin-istart] = 0.;
continue;
}
else
{
if(debug >= 5)
{
printf("Second file. Subtracting pixel value.\n");
fflush(stdout);
}
data[j+jmin-jstart][i+imin-istart] -= pixel_value;
area[j+jmin-jstart][i+imin-istart] += abuffer[i];
++narea2;
avearea2 += abuffer[i];
if(abuffer[i] > maxarea2)
maxarea2 = abuffer[i];
if(debug >= 5)
{
printf("done.\n");
fflush(stdout);
}
}
}
}
}
free(buffer);
free(abuffer);
if(fits_close_file(input.fptr, &status))
printFitsError(status);
if(!noAreas)
{
if(fits_close_file(input_area.fptr, &status))
printFitsError(status);
}
}
if(debug >= 1)
{
time(&currtime);
printf("\nDone reading data (%.0f seconds)\n",
(double)(currtime - start));
fflush(stdout);
}
/************************************/
/* Anly keep those pixels that were */
/* covered twice reasonably fully */
/************************************/
avearea1 = avearea1/narea1;
avearea2 = avearea2/narea2;
areamax = maxarea1 + maxarea2;
if(debug >= 2)
{
printf("\npixel areas: %-g + %-g = %-g\n\n", avearea1, avearea2, areamax);
fflush(stdout);
}
for (j=0; j<jlength; ++j)
{
for (i=0; i<ilength; ++i)
{
if(mNaN(area[j][i]) || area[j][i] == 0.)
{
data[j][i] = 0.;
area[j][i] = 0.;
}
else
{
if(fabs(area[j][i] - areamax)/areamax > coverageLimit)
{
data[j][i] = 0.;
area[j][i] = 0.;
}
}
}
}
/*********************************/
/* Normalize image data based on */
/* total area added to pixel */
/*********************************/
haveMinMax = 0;
datamax = 0.,
datamin = 0.;
areamin = 0.;
areamax = 0.;
imin = 99999;
imax = 0;
jmin = 99999;
jmax = 0;
for (j=0; j<jlength; ++j)
{
for (i=0; i<ilength; ++i)
{
if(area[j][i] > 0.)
{
data[j][i] = 2. * data[j][i] / area[j][i];
if(!haveMinMax)
{
datamin = data[j][i];
datamax = data[j][i];
areamin = area[j][i];
areamax = area[j][i];
haveMinMax = 1;
}
if(data[j][i] < datamin) datamin = data[j][i];
if(data[j][i] > datamax) datamax = data[j][i];
if(area[j][i] < areamin) areamin = area[j][i];
if(area[j][i] > areamax) areamax = area[j][i];
if(j < jmin) jmin = j;
if(j > jmax) jmax = j;
if(i < imin) imin = i;
if(i > imax) imax = i;
}
else
{
data[j][i] = nan;
area[j][i] = 0.;
}
}
}
imin += istart;
jmin += jstart;
imax += istart;
jmax += jstart;
if(debug >= 1)
{
printf("Data min = %-g\n", datamin);
printf("Data max = %-g\n", datamax);
printf("Area min = %-g\n", areamin);
printf("Area max = %-g\n\n", areamax);
printf("j min = %d\n", jmin);
printf("j max = %d\n", jmax);
printf("i min = %d\n", imin);
printf("i max = %d\n", imax);
}
if(jmin > jmax || imin > imax)
printError("All pixels are blank.");
/********************************/
/* Create the output FITS files */
/********************************/
remove(output_file);
remove(output_area_file);
if(fits_create_file(&output.fptr, output_file, &status))
printFitsError(status);
if(fits_create_file(&output_area.fptr, output_area_file, &status))
printFitsError(status);
/*********************************************************/
/* Create the FITS image. All the required keywords are */
/* handled automatically. */
/*********************************************************/
if (fits_create_img(output.fptr, bitpix, naxis, output.naxes, &status))
printFitsError(status);
if(debug >= 1)
{
printf("\nFITS data image created (not yet populated)\n");
fflush(stdout);
}
if (fits_create_img(output_area.fptr, bitpix, naxis, output_area.naxes, &status))
printFitsError(status);
if(debug >= 1)
{
printf("FITS area image created (not yet populated)\n");
fflush(stdout);
}
/****************************************/
/* Set FITS header from a template file */
/****************************************/
if(fits_write_key_template(output.fptr, template_file, &status))
printFitsError(status);
if(debug >= 1)
{
printf("Template keywords written to FITS data image\n");
fflush(stdout);
}
if(fits_write_key_template(output_area.fptr, template_file, &status))
printFitsError(status);
if(debug >= 1)
{
printf("Template keywords written to FITS area image\n\n");
fflush(stdout);
}
/***************************/
/* Modify BITPIX to be -64 */
/***************************/
if(fits_update_key_lng(output.fptr, "BITPIX", -64,
(char *)NULL, &status))
printFitsError(status);
if(fits_update_key_lng(output_area.fptr, "BITPIX", -64,
(char *)NULL, &status))
printFitsError(status);
/***************************************************/
/* Update NAXIS, NAXIS1, NAXIS2, CRPIX1 and CRPIX2 */
/***************************************************/
if(fits_update_key_lng(output.fptr, "NAXIS", 2,
(char *)NULL, &status))
printFitsError(status);
if(fits_update_key_lng(output.fptr, "NAXIS1", imax-imin+1,
(char *)NULL, &status))
printFitsError(status);
if(fits_update_key_lng(output.fptr, "NAXIS2", jmax-jmin+1,
(char *)NULL, &status))
printFitsError(status);
if(fits_update_key_dbl(output.fptr, "CRPIX1", output.crpix1-imin, -14,
(char *)NULL, &status))
printFitsError(status);
if(fits_update_key_dbl(output.fptr, "CRPIX2", output.crpix2-jmin, -14,
(char *)NULL, &status))
printFitsError(status);
if(fits_update_key_lng(output_area.fptr, "NAXIS", 2,
(char *)NULL, &status))
printFitsError(status);
if(fits_update_key_lng(output_area.fptr, "NAXIS1", imax-imin+1,
(char *)NULL, &status))
printFitsError(status);
if(fits_update_key_lng(output_area.fptr, "NAXIS2", jmax-jmin+1,
(char *)NULL, &status))
printFitsError(status);
if(fits_update_key_dbl(output_area.fptr, "CRPIX1", output.crpix1-imin, -14,
(char *)NULL, &status))
printFitsError(status);
if(fits_update_key_dbl(output_area.fptr, "CRPIX2", output.crpix2-jmin, -14,
(char *)NULL, &status))
printFitsError(status);
if(debug >= 1)
{
printf("Template keywords BITPIX, CRPIX, and NAXIS updated\n");
fflush(stdout);
}
/************************/
/* Write the image data */
/************************/
fpixel[0] = 1;
fpixel[1] = 1;
nelements = imax - imin + 1;
for(j=jmin; j<=jmax; ++j)
{
if (fits_write_pix(output.fptr, TDOUBLE, fpixel, nelements,
(void *)(&data[j-jstart][imin-istart]), &status))
printFitsError(status);
++fpixel[1];
}
free(data[0]);
if(debug >= 1)
{
printf("Data written to FITS data image\n");
fflush(stdout);
}
/***********************/
/* Write the area data */
/***********************/
fpixel[0] = 1;
fpixel[1] = 1;
nelements = imax - imin + 1;
for(j=jmin; j<=jmax; ++j)
{
if (fits_write_pix(output_area.fptr, TDOUBLE, fpixel, nelements,
(void *)(&area[j-jstart][imin-istart]), &status))
printFitsError(status);
++fpixel[1];
}
free(area[0]);
if(debug >= 1)
{
printf("Data written to FITS area image\n\n");
fflush(stdout);
}
/***********************/
/* Close the FITS file */
/***********************/
if(fits_close_file(output.fptr, &status))
printFitsError(status);
if(debug >= 1)
{
printf("FITS data image finalized\n");
fflush(stdout);
}
if(fits_close_file(output_area.fptr, &status))
printFitsError(status);
if(debug >= 1)
{
printf("FITS area image finalized\n\n");
fflush(stdout);
}
if(debug >= 1)
{
time(&currtime);
printf("Done (%.0f seconds total)\n", (double)(currtime - start));
fflush(stdout);
}
fprintf(fstatus, "[struct stat=\"OK\"]\n");
fflush(stdout);
exit(0);
}
