def do_reprojection(filename,input_sys,output_sys,size=None,center=None,outfile=None,list_o_files=False,hdu=0):
system_lookup= {"GALACTIC":"galactic","J2000":"equatorial"}
filename_lookup = {"GALACTIC":"GAL","J2000":"EQ"}
if list_o_files:
filename = filename[0]
d,h = pyfits.getdata(filename,hdu,header=True)
if not size:
size = get_size(h)
#Center coords always in J2000
if not center:
x,y = get_center_position(h,input_sys,"J2000")
else:
x,y = ac.convertCoords(input_sys,"J2000",center[0],center[1],2000.)
pix_size = get_pixel_size(h)
#print(x,y)
print(pix_size)
coord_string = str(x)+" "+str(y)
#print(coord_string)
#Note that older versions on Montage do not work because of normal split
#dividing the coordinates. Fix is to use shlex.split instead.
montage.mHdr(coord_string,size,"Test.hdr",system=system_lookup[output_sys],pix_size=pix_size*3600)
#print(yo)
montage.mSubimage(filename,"Test.fits",x,y,size*2,hdu=hdu)
if not outfile: #Try a reasonable guess for output file
outfile = filename.replace(".fits","_"+filename_lookup[output_sys]+".fits")
montage.mProject("Test.fits",outfile,"Test.hdr")
def do_reprojection(filename,
input_sys,
output_sys,
size=None,
center=None,
outfile=None,
list_o_files=False,
hdu=0):
system_lookup = {"GALACTIC": "galactic", "J2000": "equatorial"}
filename_lookup = {"GALACTIC": "GAL", "J2000": "EQ"}
if list_o_files:
filename = filename[0]
d, h = pyfits.getdata(filename, hdu, header=True)
if not size:
size = get_size(h)
#Center coords always in J2000
if not center:
x, y = get_center_position(h, input_sys, "J2000")
else:
x, y = ac.convertCoords(input_sys, "J2000", center[0], center[1],
2000.)
pix_size = get_pixel_size(h)
#print(x,y)
print(pix_size)
coord_string = str(x) + " " + str(y)
#print(coord_string)
#Note that older versions on Montage do not work because of normal split
#dividing the coordinates. Fix is to use shlex.split instead.
montage.mHdr(coord_string,
size,
"Test.hdr",
system=system_lookup[output_sys],
pix_size=pix_size * 3600)
#print(yo)
montage.mSubimage(filename, "Test.fits", x, y, size * 2, hdu=hdu)
if not outfile: #Try a reasonable guess for output file
outfile = filename.replace(".fits",
"_" + filename_lookup[output_sys] + ".fits")
montage.mProject("Test.fits", outfile, "Test.hdr")
def do_cutout(self, undone_cutout):
"""Make a cutout"""
success = True
version = 2
print("Making a cut-out for: " + undone_cutout)
cutsize = 0.08
#print(self.filenames)
if undone_cutout.startswith("I"):
#Spitzer/GLIMPSE
channel = undone_cutout[2]
mosaic = "self.glimpse_mosaic_" + channel
try:
reproject_map.do_reprojection(
eval(mosaic),
"GALACTIC",
"GALACTIC",
size=cutsize,
center=(self.apos, self.bpos),
outfile=self.filenames[undone_cutout])
except montage.status.MontageError:
# success=False
# print()
return (False)
os.remove(self.filenames[undone_cutout].replace(
'.fits', '_area.fits'))
elif undone_cutout.startswith("M"):
#Spitzer/MIPSGAL
try:
#reproject_map.do_reprojection(self.mips_mosaic,"J2000","GALACTIC",size=cutsize,center=(self.apos_ra,self.bpos_dec),
# outfile=self.filenames[undone_cutout])
reproject_map.do_reprojection(
self.mips_mosaic,
"J2000",
"GALACTIC",
size=cutsize,
center=(self.apos_ra, self.bpos_dec),
outfile=self.filenames[undone_cutout])
except:
print("Failed to reproject MIPS!!!")
return (False)
os.remove(self.filenames[undone_cutout].replace(
'.fits', '_area.fits'))
d, h = pyfits.getdata(self.filenames[undone_cutout], header=True)
d[np.where(d != d)] = 2000.0
pyfits.writeto(self.filenames[undone_cutout], d, h, clobber=True)
elif undone_cutout.startswith("T"):
#2MASS
coord_string = str(self.ra) + "," + str(self.dec)
headname = self.filenames[undone_cutout].replace(".fits", ".hdr")
montage.mHdr(coord_string, cutsize, headname, system="galactic")
band = undone_cutout[2] #This gets correct filter from name
print("2MASS " + band + " " + self.filenames[undone_cutout] + " " +
headname)
montage.mExec("2MASS",
band,
output_image=self.filenames[undone_cutout],
region_header=headname)
os.remove(headname)
elif undone_cutout.startswith("R"):
maptype = undone_cutout[3:]
print("Actually doing reproject")
print(undone_cutout)
print(maptype)
mosaic1 = "self.RH_mos_" + maptype + "_try1"
mosaic2 = "self.RH_mos_" + maptype + "_try2"
try:
reproject_map.do_reprojection(
eval(mosaic1),
"J2000",
"GALACTIC",
size=cutsize,
center=(self.apos_ra, self.bpos_dec),
outfile=self.filenames[undone_cutout])
except:
reproject_map.do_reprojection(
eval(mosaic2),
"J2000",
"GALACTIC",
size=cutsize,
center=(self.apos_ra, self.bpos_dec),
outfile=self.filenames[undone_cutout])
os.remove(self.filenames[undone_cutout].replace(
'.fits', '_area.fits'))
elif undone_cutout.startswith("A"):
#ATLASGAL does NOT use existing mosaics.
#Instead, we fetch from Magpis
print("Doing Atlasgal")
image = Magpis.get_images(coordinates.Galactic(float(self.glon),
float(self.glat),
unit=(u.deg,
u.deg)),
image_size=cutsize * u.deg,
survey='atlasgal')
print(image)
fits.writeto(self.filenames[undone_cutout],
image[0].data,
image[0].header,
clobber=True)
elif undone_cutout.startswith("H"):
#Herschel HiGal
print("Trying to make a cut-out")
channel = undone_cutout[1:4]
try:
os.mkdir("temp")
mosaic = "self.H" + channel + "c_try1_file1"
file1 = self.filenames[undone_cutout].replace(
"cutouts", "temp").replace(".fits", "1.fits")
reproject_map.do_reprojection(eval(mosaic),
"J2000",
"GALACTIC",
size=cutsize,
center=(self.apos_ra,
self.bpos_dec),
outfile=file1,
list_o_files=True,
hdu=1)
mosaic = "self.H" + channel + "c_try1_file2"
file2 = self.filenames[undone_cutout].replace(
"cutouts", "temp").replace(".fits", "2.fits")
reproject_map.do_reprojection(eval(mosaic),
"J2000",
"GALACTIC",
size=cutsize,
center=(self.apos_ra,
self.bpos_dec),
outfile=file2,
list_o_files=True,
hdu=1)
#Now we assume these files are the exact same size and projection
dd1, hh1 = pyfits.getdata(file1, header=True)
dd2, hh2 = pyfits.getdata(file2, header=True)
try:
dd = np.average(np.dstack((dd1, dd2)), axis=2)
except ValueError:
dd = dd1 #Remove this hack!!
pyfits.writeto(self.filenames[undone_cutout],
dd,
hh1,
clobber=True)
except (montage.status.MontageError, IndexError):
print("Failure!!")
try:
mosaic = "self.H" + channel + "c_try2_file1"
file1 = self.filenames[undone_cutout].replace(
"cutouts", "temp").replace(".fits", "1.fits")
reproject_map.do_reprojection(eval(mosaic),
"J2000",
"GALACTIC",
size=cutsize,
center=(self.apos_ra,
self.bpos_dec),
outfile=file1,
list_o_files=True,
hdu=1)
mosaic = "self.H" + channel + "c_try2_file2"
file2 = self.filenames[undone_cutout].replace(
"cutouts", "temp").replace(".fits", "2.fits")
reproject_map.do_reprojection(eval(mosaic),
"J2000",
"GALACTIC",
size=cutsize,
center=(self.apos_ra,
self.bpos_dec),
outfile=file2,
list_o_files=True,
hdu=1)
#Now we assume these files are the exact same size and projection
dd1, hh1 = pyfits.getdata(file1, header=True)
dd2, hh2 = pyfits.getdata(file2, header=True)
try:
dd = np.average(np.dstack((dd1, dd2)), axis=2)
except ValueError:
dd = dd1 #Remove this hack!!
pyfits.writeto(self.filenames[undone_cutout],
dd,
hh1,
clobber=True)
except montage.status.MontageError:
success = False
finally:
try:
shutil.rmtree("temp")
except OSError:
pass
#try to reproject try 1 500
#If this fails, try 2
#Then coadd/median combine the re_projected images
#Look-up source mosaic / get 2MASS image / get multiple files
#Lead character in cutout can tell us the basics
#Extract using montage
#Do any necessary post-processing.
#MIPS fix NANs to 2000
#Herschel rationalize header?
#Save to the appropriate place
print("Saving to: " + self.filenames[undone_cutout])
if success:
self.report_success(undone_cutout, version)
def do_cutout(self,undone_cutout):
"""Make a cutout"""
success = True
version = 2
print("Making a cut-out for: "+undone_cutout)
cutsize = 0.08
#print(self.filenames)
if undone_cutout.startswith("I"):
#Spitzer/GLIMPSE
channel = undone_cutout[2]
mosaic = "self.glimpse_mosaic_"+channel
try:
reproject_map.do_reprojection(eval(mosaic),"GALACTIC","GALACTIC",size=cutsize,center=(self.apos,self.bpos),
outfile=self.filenames[undone_cutout])
except montage.status.MontageError:
# success=False
# print()
return(False)
os.remove(self.filenames[undone_cutout].replace('.fits','_area.fits'))
elif undone_cutout.startswith("M"):
#Spitzer/MIPSGAL
try:
#reproject_map.do_reprojection(self.mips_mosaic,"J2000","GALACTIC",size=cutsize,center=(self.apos_ra,self.bpos_dec),
# outfile=self.filenames[undone_cutout])
reproject_map.do_reprojection(self.mips_mosaic,"J2000","GALACTIC",size=cutsize,center=(self.apos_ra,self.bpos_dec),
outfile=self.filenames[undone_cutout])
except:
print("Failed to reproject MIPS!!!")
return(False)
os.remove(self.filenames[undone_cutout].replace('.fits','_area.fits'))
d,h = pyfits.getdata(self.filenames[undone_cutout],header=True)
d[np.where(d!=d)] = 2000.0
pyfits.writeto(self.filenames[undone_cutout],d,h,clobber=True)
elif undone_cutout.startswith("T"):
#2MASS
coord_string = str(self.ra)+","+str(self.dec)
headname = self.filenames[undone_cutout].replace(".fits",".hdr")
montage.mHdr(coord_string,cutsize,headname,system="galactic")
band = undone_cutout[2] #This gets correct filter from name
print("2MASS "+band+" "+self.filenames[undone_cutout]+" "+headname)
montage.mExec("2MASS",band,output_image=self.filenames[undone_cutout],region_header=headname)
os.remove(headname)
elif undone_cutout.startswith("R"):
maptype = undone_cutout[3:]
print("Actually doing reproject")
print(undone_cutout)
print(maptype)
mosaic1 = "self.RH_mos_"+maptype+"_try1"
mosaic2 = "self.RH_mos_"+maptype+"_try2"
try:
reproject_map.do_reprojection(eval(mosaic1),"J2000","GALACTIC",size=cutsize,center=(self.apos_ra,self.bpos_dec),
outfile=self.filenames[undone_cutout])
except:
reproject_map.do_reprojection(eval(mosaic2),"J2000","GALACTIC",size=cutsize,center=(self.apos_ra,self.bpos_dec),
outfile=self.filenames[undone_cutout])
os.remove(self.filenames[undone_cutout].replace('.fits','_area.fits'))
elif undone_cutout.startswith("A"):
#ATLASGAL does NOT use existing mosaics.
#Instead, we fetch from Magpis
print("Doing Atlasgal")
image = Magpis.get_images(coordinates.Galactic(float(self.glon), float(self.glat),
unit=(u.deg,u.deg)), image_size=cutsize*u.deg, survey='atlasgal')
print(image)
fits.writeto(self.filenames[undone_cutout],
image[0].data,image[0].header,clobber=True)
elif undone_cutout.startswith("H"):
#Herschel HiGal
print("Trying to make a cut-out")
channel = undone_cutout[1:4]
try:
os.mkdir("temp")
mosaic = "self.H"+channel+"c_try1_file1"
file1 = self.filenames[undone_cutout].replace("cutouts","temp").replace(".fits","1.fits")
reproject_map.do_reprojection(eval(mosaic),"J2000","GALACTIC",size=cutsize,center=(self.apos_ra,self.bpos_dec),
outfile=file1,list_o_files=True,hdu=1)
mosaic = "self.H"+channel+"c_try1_file2"
file2 = self.filenames[undone_cutout].replace("cutouts","temp").replace(".fits","2.fits")
reproject_map.do_reprojection(eval(mosaic),"J2000","GALACTIC",size=cutsize,center=(self.apos_ra,self.bpos_dec),
outfile=file2,list_o_files=True,hdu=1)
#Now we assume these files are the exact same size and projection
dd1,hh1 = pyfits.getdata(file1,header=True)
dd2,hh2 = pyfits.getdata(file2,header=True)
try:
dd = np.average(np.dstack((dd1,dd2)),axis=2)
except ValueError:
dd = dd1 #Remove this hack!!
pyfits.writeto(self.filenames[undone_cutout],dd,hh1,clobber=True)
except (montage.status.MontageError, IndexError):
print("Failure!!")
try:
mosaic = "self.H"+channel+"c_try2_file1"
file1 = self.filenames[undone_cutout].replace("cutouts","temp").replace(".fits","1.fits")
reproject_map.do_reprojection(eval(mosaic),"J2000","GALACTIC",size=cutsize,center=(self.apos_ra,self.bpos_dec),
outfile=file1,list_o_files=True,hdu=1)
mosaic = "self.H"+channel+"c_try2_file2"
file2 = self.filenames[undone_cutout].replace("cutouts","temp").replace(".fits","2.fits")
reproject_map.do_reprojection(eval(mosaic),"J2000","GALACTIC",size=cutsize,center=(self.apos_ra,self.bpos_dec),
outfile=file2,list_o_files=True,hdu=1)
#Now we assume these files are the exact same size and projection
dd1,hh1 = pyfits.getdata(file1,header=True)
dd2,hh2 = pyfits.getdata(file2,header=True)
try:
dd = np.average(np.dstack((dd1,dd2)),axis=2)
except ValueError:
dd = dd1 #Remove this hack!!
pyfits.writeto(self.filenames[undone_cutout],dd,hh1,clobber=True)
except montage.status.MontageError:
success = False
finally:
try:
shutil.rmtree("temp")
except OSError:
pass
#try to reproject try 1 500
#If this fails, try 2
#Then coadd/median combine the re_projected images
#Look-up source mosaic / get 2MASS image / get multiple files
#Lead character in cutout can tell us the basics
#Extract using montage
#Do any necessary post-processing.
#MIPS fix NANs to 2000
#Herschel rationalize header?
#Save to the appropriate place
print("Saving to: "+self.filenames[undone_cutout])
if success:
self.report_success(undone_cutout,version)
def rotcrop_cube(x1, y1, x2, y2, cubename, outname, xwidth=25, ywidth=25,
in_system='galactic', out_system='equatorial', clobber=True,
newheader=None, xcen=None, ycen=None):
"""
Crop a data cube and then rotate it with montage
"""
cubefile = pyfits.open(cubename)
if xcen is None and ycen is None:
pos1 = coords.Position([x1,y1],system=in_system)
pos2 = coords.Position([x2,y2],system=in_system)
if cubefile[0].header.get('CTYPE1')[:2] == 'RA':
x1,y1 = pos1.j2000()
x2,y2 = pos2.j2000()
coord_system = 'celestial'
elif cubefile[0].header.get('CTYPE1')[:4] == 'GLON':
x1,y1 = pos1.galactic()
x2,y2 = pos2.galactic()
coord_system = 'galactic'
xcen = (x1+x2)/2.0
ycen = (y1+y2)/2.0
print xcen,ycen,xwidth,ywidth,coord_system
else:
coord_system = in_system
sc = subcube(cubefile[0].data, xcen, xwidth, ycen, ywidth,
widthunits='pixels', units="wcs", header=cubefile[0].header,
return_HDU=True)
# note: there should be no security risk here because pyfits' writeto
# will not overwrite by default
tempcube = tempfile.mktemp(suffix='.fits')
sc.writeto(tempcube)
pa = posang.posang(x1,y1,x2,y2,system=coord_system) - 90
if newheader is None:
newheader = sc.header.copy()
cd11 = newheader.get('CDELT1') if newheader.get('CDELT1') else newheader.get('CD1_1')
cd22 = newheader.get('CDELT2') if newheader.get('CDELT2') else newheader.get('CD2_2')
cd12 = newheader.get('CD1_2') if newheader.get('CD1_2') else 0.0
cd21 = newheader.get('CD2_1') if newheader.get('CD2_1') else 0.0
cdelt = numpy.sqrt(cd11**2+cd12**2)
tempheader = tempfile.mktemp(suffix='.hdr')
ycensign = "+" if numpy.sign(ycen) >= 0 else "-"
montage.mHdr("%s %1s%s" % (xcen, ycensign, numpy.abs(ycen)), xwidth*cdelt,
tempheader, system=out_system, height=ywidth*cdelt,
pix_size=cdelt*3600.0, rotation=pa)
os.system("sed -i bck '/END/d' %s" % (tempheader))
newheader2 = pyfits.Header()
newheader2.fromTxtFile(tempheader)
#newheader2.fromtextfile(tempheader)
for key in ('CRPIX3','CRVAL3','CDELT3','CD3_3','CUNIT3','WCSTYPE3','CTYPE3'):
if newheader.get(key):
newheader2.update(key,newheader.get(key))
if newheader.get('CD3_3') and newheader2.get('CDELT3') is None:
newheader2.update('CDELT3',newheader.get('CD3_3'))
newheader2.toTxtFile(tempheader,clobber=True)
#if newheader2.get('CDELT3') is None:
# raise Exception("No CD3_3 or CDELT3 in header.")
else:
if isinstance(newheader,str):
newheader2 = pyfits.Header()
newheader2.fromTxtFile(newheader)
tempheader = tempfile.mktemp(suffix='.hdr')
newheader2.toTxtFile(tempheader,clobber=True)
montage.wrappers.reproject_cube(tempcube,outname,header=tempheader,clobber=clobber)
#print "\n",outname
#os.system('imhead %s | grep CDELT' % outname)
# AWFUL hack because montage removes CDELT3
tempcube = pyfits.open(outname)
tempcube.header = newheader2
#if tempcube.header.get('CDELT3') is None:
# raise Exception("No CD3_3 or CDELT3 in header.")
#print tempcube.header.get('CDELT3')
tempcube.writeto(outname,clobber=True)
#print tempcube.get('CDELT3')
#print "\n",outname
#os.system('imhead %s | grep CDELT' % outname)
#print "\nnewheader2"
#print newheader2.ascard
#print
return
def rotcrop_cube(x1, y1, x2, y2, cubename, outname, xwidth=25, ywidth=25,
in_system='galactic', out_system='equatorial',
clobber=True, newheader=None, xcen=None, ycen=None):
"""
Crop a data cube and then rotate it with montage
"""
cubefile = fits.open(cubename)
if xcen is None and ycen is None:
pos1 = coords.Position([x1,y1],system=in_system)
pos2 = coords.Position([x2,y2],system=in_system)
if cubefile[0].header.get('CTYPE1')[:2] == 'RA':
x1,y1 = pos1.j2000()
x2,y2 = pos2.j2000()
coord_system = 'celestial'
elif cubefile[0].header.get('CTYPE1')[:4] == 'GLON':
x1,y1 = pos1.galactic()
x2,y2 = pos2.galactic()
coord_system = 'galactic'
xcen = (x1+x2)/2.0
ycen = (y1+y2)/2.0
print xcen,ycen,xwidth,ywidth,coord_system
else:
coord_system = in_system
sc = subcube(cubefile[0].data, xcen, xwidth, ycen, ywidth,
widthunits='pixels', units="wcs", header=cubefile[0].header,
return_HDU=True)
# note: there should be no security risk here because fits' writeto
# will not overwrite by default
tempcube = tempfile.mktemp(suffix='.fits')
sc.writeto(tempcube)
pa = posang.posang(x1,y1,x2,y2,system=coord_system) - 90
if newheader is None:
newheader = sc.header.copy()
cd11 = newheader.get('CDELT1') if newheader.get('CDELT1') else newheader.get('CD1_1')
cd22 = newheader.get('CDELT2') if newheader.get('CDELT2') else newheader.get('CD2_2')
cd12 = newheader.get('CD1_2') if newheader.get('CD1_2') else 0.0
cd21 = newheader.get('CD2_1') if newheader.get('CD2_1') else 0.0
cdelt = numpy.sqrt(cd11**2+cd12**2)
tempheader = tempfile.mktemp(suffix='.hdr')
ycensign = "+" if numpy.sign(ycen) >= 0 else "-"
montage.mHdr("%s %1s%s" % (xcen, ycensign, numpy.abs(ycen)), xwidth*cdelt,
tempheader, system=out_system, height=ywidth*cdelt,
pix_size=cdelt*3600.0, rotation=pa)
os.system("sed -i bck '/END/d' %s" % (tempheader))
newheader2 = fits.Header()
newheader2.fromTxtFile(tempheader)
#newheader2.fromtextfile(tempheader)
for key in ('CRPIX3','CRVAL3','CDELT3','CD3_3','CUNIT3','WCSTYPE3','CTYPE3'):
if newheader.get(key):
newheader2[key] = newheader.get(key)
if newheader.get('CD3_3') and newheader2.get('CDELT3') is None:
newheader2['CDELT3'] = newheader.get('CD3_3')
newheader2.toTxtFile(tempheader,clobber=True)
#if newheader2.get('CDELT3') is None:
# raise Exception("No CD3_3 or CDELT3 in header.")
else:
if isinstance(newheader,str):
newheader2 = fits.Header()
newheader2.fromTxtFile(newheader)
tempheader = tempfile.mktemp(suffix='.hdr')
newheader2.toTxtFile(tempheader,clobber=True)
montage.wrappers.reproject_cube(tempcube,outname,header=tempheader,clobber=clobber)
#print "\n",outname
#os.system('imhead %s | grep CDELT' % outname)
# AWFUL hack because montage removes CDELT3
tempcube = fits.open(outname)
tempcube.header = newheader2
#if tempcube.header.get('CDELT3') is None:
# raise Exception("No CD3_3 or CDELT3 in header.")
#print tempcube.header.get('CDELT3')
tempcube.writeto(outname,clobber=True)
#print tempcube.get('CDELT3')
#print "\n",outname
#os.system('imhead %s | grep CDELT' % outname)
return
def rotcrop_cube(
x1,
y1,
x2,
y2,
cubename,
outname,
xwidth=25,
ywidth=25,
in_system="galactic",
out_system="equatorial",
clobber=True,
):
"""
Crop a data cube and then rotate it with montage
"""
cubefile = pyfits.open(cubename)
if not coordsOK:
raise ImportError("cubes.py requires coords for rotcrop_cube")
pos1 = coords.Position([x1, y1], system=in_system)
pos2 = coords.Position([x2, y2], system=in_system)
if cubefile[0].header.get("CTYPE1")[:2] == "RA":
x1, y1 = pos1.j2000()
x2, y2 = pos2.j2000()
coord_system = "celestial"
elif cubefile[0].header.get("CTYPE1")[:2] == "GLON":
x1, y1 = pos1.galactic()
x2, y2 = pos2.galactic()
coord_system = "galactic"
xcen = (x1 + x2) / 2.0
ycen = (y1 + y2) / 2.0
sc = subcube(
cubefile[0].data,
xcen,
xwidth,
ycen,
ywidth,
widthunits="pixels",
units="wcs",
header=cubefile[0].header,
return_HDU=True,
)
# note: there should be no security risk here because pyfits' writeto
# will not overwrite by default
tempcube = tempfile.mktemp(suffix=".fits")
sc.writeto(tempcube)
pa = posang.posang(x1, y1, x2, y2, system=coord_system) - 90
newheader = sc.header.copy()
cd11 = newheader.get("CDELT1") if newheader.get("CDELT1") else newheader.get("CD1_1")
cd22 = newheader.get("CDELT2") if newheader.get("CDELT2") else newheader.get("CD2_2")
cd12 = newheader.get("CD1_2") if newheader.get("CD1_2") else 0.0
cd21 = newheader.get("CD2_1") if newheader.get("CD2_1") else 0.0
cdelt = numpy.sqrt(cd11 ** 2 + cd12 ** 2)
tempheader = tempfile.mktemp(suffix=".hdr")
ycensign = "+" if numpy.sign(ycen) >= 0 else "-"
montage.mHdr(
"%s %1s%s" % (xcen, ycensign, numpy.abs(ycen)),
xwidth * cdelt,
tempheader,
system=out_system,
height=ywidth * cdelt,
pix_size=cdelt * 3600.0,
rotation=pa,
)
os.system("sed -i bck '/END/d' %s" % (tempheader))
newheader2 = pyfits.Header()
newheader2.fromTxtFile(tempheader)
for key in ("CRPIX3", "CRVAL3", "CDELT3", "CD3_3", "CUNIT3", "WCSTYPE3", "CTYPE3"):
if newheader.get(key):
newheader2.update(key, newheader.get(key))
if newheader.get("CD3_3") and newheader2.get("CDELT3") is None:
newheader2.update("CDELT3", newheader.get("CD3_3"))
newheader2.toTxtFile(tempheader, clobber=True)
# if newheader2.get('CDELT3') is None:
# raise Exception("No CD3_3 or CDELT3 in header.")
montage.wrappers.reproject_cube(tempcube, outname, header=tempheader, clobber=clobber)
# print "\n",outname
# os.system('imhead %s | grep CDELT' % outname)
# AWFUL hack because montage removes CDELT3
tempcube = pyfits.open(outname)
tempcube.header = newheader2
# if tempcube.header.get('CDELT3') is None:
# raise Exception("No CD3_3 or CDELT3 in header.")
# print tempcube.header.get('CDELT3')
tempcube.writeto(outname, clobber=True)
# print tempcube.get('CDELT3')
# print "\n",outname
# os.system('imhead %s | grep CDELT' % outname)
# print "\nnewheader2"
# print newheader2.ascard
# print
return