int GetWPos(int nnaxes, float pix[3], double ref[3], float refpix[3],
float inc[3], float rot[3], char type[3][9], double pos[3])
/* Determines World coordinates for a position of the first three axes */
/* takes pixel location (pix), FITS header info (ref, refpix, inc, rot */
/* type and returns coordinates as pos */
/* returns 0 if successful otherwise: */
/* 1 = angle too large for projection; */
{ int i, j, naxes, iRet, Lonaxis=-1, Lataxis=-1, Othaxis[3]={1,1,1};
char Lontypes[4][5]={"RA ", "GLON", "ELON", "LL "};
int Loncheck[4] = {2, 4, 4, 2};
char Lattypes[4][5]={"DEC ", "GLAT", "ELAT", "MM "};
int Latcheck[4] = {3, 4, 4, 2};
naxes = nnaxes;
if (naxes>3) naxes = 3;
/* find any Long axis */
for (i=0;i<naxes;i++) {
for (j=0;j<4;j++)
if (!strncmp (type[i], Lontypes[j], Loncheck[j])) Lonaxis = i;}
/* find any Lat axis */
for (i=0;i<naxes;i++) {
for (j=0;j<4;j++)
if (!strncmp (type[i], Lattypes[j], Latcheck[j])) Lataxis = i;}
/* get World coordinates for any position pair */
if ((Lonaxis>=0) && (Lataxis>=0)) {
iRet = worldpos(pix[Lonaxis], pix[Lataxis],
ref[Lonaxis], ref[Lataxis], refpix[Lonaxis], refpix[Lataxis],
inc[Lonaxis], inc[Lataxis], rot[Lataxis],
&type[Lonaxis][4], &pos[Lonaxis], &pos[Lataxis]);}
else { /* no position pair */
Lonaxis = -1; Lataxis = -1; iRet = 0;}
if (Lonaxis>=0) Othaxis[Lonaxis] = 0;
if (Lataxis>=0) Othaxis[Lataxis] = 0;
/* do Other axes */
for (i=0;i<naxes;i++){
if (Othaxis[i]) pos[i] = ref[i] + inc[i] * (pix[i] - refpix[i]);
}
return iRet;
} /* end of GetWPos */
void nemo_main() {
int i,j,nentries,ncol,nsp;
FILE *fp; /* File pointer for output file */
string outfile; /* name of output file */
string *sp; /* used to read the command line argument "col" */
string wcs_type; /* WCS projection type (can be XXX or -XXX) */
char type[5]; /* the real WCS for worldpos() ; needs to be '-XXX' */
int nx,ny; /* size of map in pixels for x,y directions */
double index,rzero; /* parameters for powerlaw */
double crval1,crval2; /* center RA and DEC */
double cdelt1,cdelt2; /* delta RA and delta DEC for pixels */
double crpix1,crpix2; /* reference pixel */
double xpix, ypix; /* current x and y pixel position in map */
double ra,dec; /* ra,dec of current pixel position in map */
double flux; /* computed flux for each pixel */
double radius; /* radius, in pixels */
/* Read command line */
index = getdparam("index");
rzero = getdparam("rzero");
outfile = getparam("out");
wcs_type = getparam("type");
if (strlen(wcs_type)==3) { /* make sure type is '-XXX' */
type[0] = '-';
strcpy(&type[1],wcs_type);
} else if (strlen(wcs_type)==4) {
if (*wcs_type == '-')
strcpy(type,wcs_type);
else
error("type=%s probably not legal, should be -XXX",wcs_type);
} else
error("type=%s must be a valid -XXX or XXX WCS descriptor",wcs_type);
sp = burststring(getparam("crval")," ,");
nsp = xstrlen(sp,sizeof(string))-1;
if (nsp != 2)
error("You must specify two values for the crval keyword!");
crval1 = natof(sp[0]);
crval2 = natof(sp[1]);
freestrings(sp);
sp = burststring(getparam("naxis")," ,");
nsp = xstrlen(sp,sizeof(string))-1;
if (nsp != 2)
error("You must specify two values for the naxis keyword!");
nx = natoi(sp[0]);
ny = natoi(sp[1]);
freestrings(sp);
crpix1 = nx/2.0+1;
crpix2 = ny/2.0+1;
cdelt2 = getdparam("cdelt")/3600.;
cdelt1 = -cdelt2;
/* Test to make sure we can write to output file */
fp = stropen(outfile,"w");
strclose(fp);
fprintf(stderr,"nx,ny = %d,%d\n",nx,ny);
fprintf(stderr,"crval1,crval2=%lf,%lf\n",crval1,crval2);
fprintf(stderr,"crpix1,crpix2=%lf,%lf\n",crpix1,crpix2);
fprintf(stderr,"wcs: %s\n",type);
xpix=1.0;
ypix=1.0;
worldpos(xpix,ypix,crval1,crval2,crpix1,crpix2,cdelt1,cdelt2,0.0,type,&ra,&dec);
dprintf(1,"LL corner: %g %g\n",ra,dec);
xpix=nx;
worldpos(xpix,ypix,crval1,crval2,crpix1,crpix2,cdelt1,cdelt2,0.0,type,&ra,&dec);
dprintf(1,"LR corner: %g %g\n",ra,dec);
ypix=ny;
worldpos(xpix,ypix,crval1,crval2,crpix1,crpix2,cdelt1,cdelt2,0.0,type,&ra,&dec);
dprintf(1,"UR corner: %g %g\n",ra,dec);
xpix=1.0;
worldpos(xpix,ypix,crval1,crval2,crpix1,crpix2,cdelt1,cdelt2,0.0,type,&ra,&dec);
dprintf(1,"UL corner: %g %g\n",ra,dec);
/* Write header for TABFITS to file */
fp = stropen(getparam("out"),"w!");
fprintf(fp,"# NAXIS1 = %d\n",nx);
fprintf(fp,"# NAXIS2 = %d\n",ny);
fprintf(fp,"# NAXIS3 = 1\n");
fprintf(fp,"# CDELT1 = %lf\n",cdelt1);
fprintf(fp,"# CDELT2 = %lf\n",cdelt2);
fprintf(fp,"# CRVAL1 = %lf\n",crval1);
fprintf(fp,"# CRVAL2 = %lf\n",crval2);
fprintf(fp,"# CRPIX1 = %f\n",crpix1);
fprintf(fp,"# CRPIX2 = %f\n",crpix2);
fprintf(fp,"# CTYPE1 = 'RA--%s'\n",type);
fprintf(fp,"# CTYPE2 = 'DEC-%s'\n",type);
fprintf(fp,"# COMMENT index=%g / powerlaw index\n",index);
fprintf(fp,"# COMMENT rzero=%g / rzero parameter\n",rzero);
fprintf(fp,"# COMMENT out=%s / output table\n",outfile);
fprintf(fp,"# COMMENT crval=%f,%f / Center WCS coordinates\n",crval1,crval2);
fprintf(fp,"# COMMENT naxis=%d,%d / Image size in pixels\n",nx,ny);
fprintf(fp,"# COMMENT cdelt=%f / pixel size in arcseconds\n",cdelt2*3600);
fprintf(fp,"# COMMENT type=%s / Projection type\n",type);
fprintf(fp,"# COMMENT VERSION=%s / Version number\n",getparam("VERSION"));
for (i=0; i< ny; i++){
ypix = i + 1.0;
for (j=0; j< nx; j++){
xpix = j + 1.0;
worldpos(xpix,ypix,crval1,crval2,crpix1,crpix2,cdelt1,cdelt2,0.0,
type,&ra,&dec);
radius = sqrt((xpix-crpix1)*(xpix-crpix1) + (ypix-crpix2)*(ypix-crpix2));
flux = 1.0/(1.0 + pow(radius/rzero,index));
/* if (radius <= 4)
flux = 1.0;
else
flux = 1.0/(1.0 + pow(radius-4,index)); */
fprintf(fp,"%lf %lf %4.2e\n",ra,dec,flux);
}
}
strclose(fp);
}
void yse_line_print(yse_line_list *line, yse_field_t *field, const char *filename, float flatness, int idx, double *keyval, int foutid)
{
FILE *fp, *fpix, *fsky; // If you want to get xyfile, remove //
int n=0, i=0, j=0, max_i, max_j;
double a; // xy slope
double asky; // sky slope
float xmax, xmin;
float ymax, ymin;
int xpix, ypix;
int rc=0;
float max_length_xy=-1000.0, length;
float max_length_sky;
char buf[80];
char fname[80], outnamexy[80], outnamesky[80], outnameskycen[80], outnamexycen[80];
char fnamepix[80], fnamesky[80];
type = "-TAN";
xrefsky = keyval[0];
yrefsky = keyval[1];
xrefpix = keyval[2];
yrefpix = keyval[3];
xinc = keyval[4];
yinc = keyval[5];
rot = keyval[6];
/*
printf("xrefsky = %.10f\n", keyval[0]);
printf("yrefsky = %.10f\n", keyval[1]);
printf("xrefpix = %.10f\n", keyval[2]);
printf("yrefpix = %.10f\n", keyval[3]);
printf("cdelt1 = %.10f\n", keyval[4]);
printf("cdelt2 = %.10f\n", keyval[5]);
printf("rot = %.10f\n", keyval[6]);
*/
if ( foutid==1 ) sprintf(fname, "LP%05d", idx); // If you want to get xyfile, remove //
if ( foutid==1 ) fp = fopen(fname, "w"); // If you want to get xyfile, remove //
while(line != NULL)
{
x[n] = line->x;
y[n] = line->y;
if ( foutid==1 ) fprintf(fp, "%f %f\n", x[n], y[n]); // If you want to get xyfile, remove //
rc = worldpos(x[n], y[n], xrefsky, yrefsky, xrefpix, yrefpix, xinc, yinc, rot, type, &tmpxsky, &tmpysky);
xsky[n] = tmpxsky;
ysky[n] = tmpysky;
line = line->next;
n++;
}
if ( foutid==1 ) fclose(fp); // If you want to get xyfile, remove //
if ( n<MIN_NPIXEL ){
if ( foutid==1 ) remove(fname); // If you want to get xyfile, remove //
return ;
}
for ( i=0 ; i<(n-1) ; i++ ){
for ( j=(i+1) ; j<n ; j++ ){
length = sqrt((x[i]-x[j])*(x[i]-x[j])+(y[i]-y[j])*(y[i]-y[j]));
if ( length>max_length_xy ){
max_length_xy = length;
max_i = i;
max_j = j;
}
}
}
a = (y[max_j]-y[max_i])/(x[max_j]-x[max_i]);
xmin = ( x[max_i]>x[max_j] ) ? x[max_j] : x[max_i];
xmax = ( x[max_i]>x[max_j] ) ? x[max_i] : x[max_j];
ymin = ( y[max_i]>y[max_j] ) ? y[max_j] : y[max_i];
ymax = ( y[max_i]>y[max_j] ) ? y[max_i] : y[max_j];
asky = (ysky[max_j]-ysky[max_i])/(xsky[max_j]-xsky[max_i])*cos((ysky[max_i]*D2R+ysky[max_j]*D2R)/2.0);
xskymin = ( xsky[max_i]>xsky[max_j] ) ? xsky[max_j] : xsky[max_i];
xskymax = ( xsky[max_i]>xsky[max_j] ) ? xsky[max_i] : xsky[max_j];
yskymin = ( ysky[max_i]>ysky[max_j] ) ? ysky[max_j] : ysky[max_i];
yskymax = ( ysky[max_i]>ysky[max_j] ) ? ysky[max_i] : ysky[max_j];
if ( max_length_xy>MIN_STREAK_LENGTH ){
max_length_sky = angular_sep(xskymin, yskymin, xskymax, yskymax);
sprintf(fnamepix, "%s.sxy", filename);
sprintf(fnamesky, "%s.ssky", filename);
fpix = fopen(fnamepix, "a+");
fsky = fopen(fnamesky, "a+");
for ( i=0 ; i<n ; i++ ){
xpix = (int)x[i];
ypix = (int)y[i];
fprintf(fpix, "%d %d 16000\n", xpix, ypix);
fprintf(fsky, "%11.6f %11.6f 16000\n", xsky[i], ysky[i]);
}
fclose(fpix);
fclose(fsky);
sprintf(outnamexy, "%s.strxy", filename);
fp = fopen(outnamexy, "a+");
if ( foutid==1 ){
printf("XY %s flatness= %11.6f a= %11.6f %7.1f %7.1f %7.1f %7.1f L= %11.6f\n",
fname, flatness, a, xmin, ymin, xmax, ymax, max_length_xy);
fprintf(fp, "%11.6f %11.6f %7.1f %7.1f %7.1f %7.1f %11.6f\n",
flatness, a, xmin, ymin, xmax, ymax, max_length_xy);
}else{
printf("XY flatness= %11.6f a= %11.6f %7.1f %7.1f %7.1f %7.1f L= %11.6f\n",
flatness, a, xmin, ymin, xmax, ymax, max_length_xy);
fprintf(fp, "%11.6f %11.6f %7.1f %7.1f %7.1f %7.1f %11.6f\n",
flatness, a, xmin, ymin, xmax, ymax, max_length_xy);
}
fclose(fp);
sprintf(outnamesky, "%s.strsky", filename);
fp = fopen(outnamesky, "a+");
if ( foutid==1 ){
printf("SKY %s flatness= %11.6f a= %11.6f %11.6f %11.6f %11.6f %11.6f L= %11.6f\n",
fname, flatness, asky, xskymin, yskymin, xskymax, yskymax, max_length_sky);
fprintf(fp, "%11.6f %11.6f %11.6f %11.6f %11.6f %11.6f %11.6f\n",
flatness, asky, xskymin, yskymin, xskymax, yskymax, max_length_sky);
}else{
printf("SKY flatness= %11.6f a= %11.6f %11.6f %11.6f %11.6f %11.6f L= %11.6f\n",
flatness, asky, xskymin, yskymin, xskymax, yskymax, max_length_sky);
fprintf(fp, "%11.6f %11.6f %11.6f %11.6f %11.6f %11.6f %11.6f\n",
flatness, asky, xskymin, yskymin, xskymax, yskymax, max_length_sky);
}
fclose(fp);
sprintf(outnameskycen, "%s.strskycen", filename);
fp = fopen(outnameskycen, "a+");
fprintf(fp, "%11.6f %11.6f %11.6f %11.6f %11.6f\n",
flatness, asky, (xskymin+xskymax)/2.0, (yskymin+yskymax)/2.0, max_length_sky);
//flatness, asky, (xmin+xmax)/2.0, (ymin+ymax)/2.0, max_length_sky);
fclose(fp);
sprintf(outnamexycen, "%s.strxycen", filename);
fp = fopen(outnamexycen, "a+");
fprintf(fp, "%11.6f %11.6f %11.6f %11.6f %11.6f\n",
//flatness, asky, (xskymin+xskymax)/2.0, (yskymin+yskymax)/2.0, max_length_sky);
flatness, asky, (xmin+xmax)/2.0, (ymin+ymax)/2.0, max_length_sky);
fclose(fp);
}else{
remove(fname);
}
return ;
}
