def test_shapes():
t = fitstables.mrdfits(filename)
for i, v in enumerate(t.values()):
assert v.shape == shapes[i]
def test_keys():
t = fitstables.mrdfits(filename)
assert t.keys() == keys
def test_write_read():
fitstables.mwrfits(test_dict, outfile, clobber=True)
dict2 = fitstables.mrdfits(outfile)
assert_dict_almost_equal(test_dict, dict2)
def test_mrdfits():
"""
Test that file is readable by mrdfits
"""
t = fitstables.mrdfits(filename)
def cmp_aperture_luminosity_fast(table, outaperture, r500angular, xc=.303, inlum=1., verbose=False, order=1):
"""
Compute the luminosity function of outaperture, r500angular, xc
This is done by interpolating a table
Interpolation on xc , r500angular
Extrapolation on outaperture
INPUT :
table: file name of the input table, luminosity versus outaperture, r500angular, xc
outaperture: vector, out aperture radius in which the luminosity is computed, in r500angular unit
r500angular: vector, size of the galaxy, value in arcsec of r500 on the detector
xc: the "xc" parameter in the AB model (default 0.303 Piffaretti 2010).
Useful to parametrize evolution or non-self-similar relation.
inlum: input luminosity
order: order of the interpolation, default 1, linear
verbose: default false
OUTPUT: interpolated luminosity
Remark: input_aperture is hardcoded to 5 r500angular
Bibliography:
Arnaud, M., Pratt, G.W., Piffaretti, R., Boehringer, H., Croston, J.H., Pointecouteau, E., 2010, A & A 517, 92,
The universal galaxy cluster pressure profile from a representative sample of nearby systems (REXCESS)
and the Y_SZ-M_500 relation.
------
01 May 2015 RG interpolation logarithmic of outaperture
30 April 2015 add parameter order, default 1 and use verbose for print
13 March 2015 raise an exception when file is not found
20 jan 2015 created by Rene Gastaud.
"""
# verifications
n_out = outaperture.size
n_xc = xc.size
n_ang = r500angular.size
if(n_out==1): n_out = max([n_xc,n_ang])
if (verbose):
if(n_xc != n_out): print 'cmp_aperture_luminosity_fast warning n_xc != n_out', n_xc, n_out
if(n_out != n_ang): print 'cmp_aperture_luminosity_fast warning n_ang != n_out', n_ang, n_out
if(n_xc != n_ang): print 'cmp_aperture_luminosity_fast warning n_ang != n_out', n_xc, n_out
if (verbose): print 'n_out=', n_out, ' order=', order
if(n_xc == 1): xc = np.repeat(xc, n_out)
# I/Read table
fstatus = os.path.isfile(table)
print "Table", table
if (verbose): print "read cmp_aperture_luminosity_fast file"+table+" ", fstatus
if (fstatus):
tab = mrdfits(table)
else:
raise Exception("cmp_aperture_luminosity_fast file"+table+" not found")
m_ang = tab['R500ANGULAR'].size
m_out = tab['OUTAPERTURE'].size
m_xc = tab['XC'].size
index_r500angular = np.arange(m_ang)
index_xc = np.arange(m_xc)
index_outaperture = np.arange(m_out)
interpol_r = interp1d(tab['R500ANGULAR'], index_r500angular)
## interpolation does not work
#r_interpolated = interpol_r(r500angular)
extrapol_r = extrap1d(interpol_r)
r_extrapolated = extrapol_r(r500angular)
if (r500angular.max() > tab['R500ANGULAR'].max()):
print 'WARNING cmp_aperture_luminosity_fast extrapolation on r500angular ', r500angular.max(), '>', tab['R500ANGULAR'].max()
interpol_xc = interp1d(tab['XC'], index_xc)
xc_interpolated = interpol_xc(xc)
extrapol_xc = extrap1d(interpol_xc)
xc_extrapolated = extrapol_xc(xc)
#interpol_outaperture = interp1d(log(tab['OUTAPERTURE']), index_outaperture)
#extrapol_outaperture = extrap1d(interpol_outaperture)
#outaperture_extrapolated = extrapol_outaperture(log(outaperture))
#interpol_outaperture = interp1d(tab['OUTAPERTURE'], index_outaperture)
interpol_outaperture = interp1d(np.log(tab['OUTAPERTURE']), index_outaperture)
extrapol_outaperture = extrap1d(interpol_outaperture)
if (outaperture.max() > tab['OUTAPERTURE'].max()):
print 'WARNING cmp_aperture_luminosity_fast extrapolation on outaperture ', outaperture.max(),'>', tab['OUTAPERTURE'].max()
outaperture_extrapolated = extrapol_outaperture(np.log(outaperture))
#z = mrdfits('z.fits',0)
#y = mrdfits('y.fits',0)
#x = mrdfits('r_interpolated.fits',0)
#coords = (z,y,x)
#print 'xc_extrapolated ', xc_extrapolated.size
coords = (outaperture_extrapolated, xc_extrapolated, r_extrapolated)
outlum = inlum*ndimage.map_coordinates(tab['APERTURE_LUMINOSITY'], coords, order=order)
return outlum
