def get_fiducial_sim_lib(path_to_libs = None):
from fslens.sims import sims
import sims_generic
import covmatrices
import likelihoods
import displacements as dp
from fslens.misc import jc_camb as camb
# Needs about 748 sim to 4pi surface with this params.
# Let's do twice as much.
"""
There is a trade-off between high resolution and number of iteration in the conjugate gradient.
If the resolution is lower each step is much faster but the inacuracy in the inverse maping drives the erros
and make it need a higher number of iterates.
E.g. for PL2015 params, with res 8 I need 50 iterate , done in 5 sec total.
with res 9 I ned 20 iterates, done in 10 sec total.
"""
LD_res = 8
HD_res = 8
beam_FWHM_amin = 5.
sN_uKamin = 35.
nsims = 100
HD_shape = (2**HD_res,2**HD_res) # resolution for CMB and lensing operation done at
LD_shape = (2**LD_res,2**LD_res) # resolution of the dat map
lcell_side_amin = 1.7 # length of lcell of the data resolution
lside = lcell_side_amin / 60./180.*np.pi * LD_shape[0]*np.ones(2) # pixel res always the same always at 1.7 amin.
cl_unl = camb.spectra_fromcambfile('/Users/jcarron/SpyderProjects/jpipe/inputs'
'/cls/base_plikHM_TT_lowTEB_lensing_lenspotentialCls.dat')['tt'][:]
cl_len = camb.spectra_fromcambfile('/Users/jcarron/SpyderProjects/jpipe/inputs'
'/cls/base_plikHM_TT_lowTEB_lensing_lensedCls.dat')['tt'][:]
cl_pp = camb.spectra_fromcambfile('/Users/jcarron/SpyderProjects/jpipe/inputs'
'/cls/base_plikHM_TT_lowTEB_lensing_lenspotentialCls.dat')['pp'][:]
cl_noise = (sN_uKamin * np.pi / 180. / 60.) ** 2*np.ones(20000) # simple flat noise Cls
cl_pp[0:2] = cl_pp[2]
path_to_libs = '/Users/jcarron/data/flatsky_lens_simlibs/test_wPL2015' if path_to_libs is None else path_to_libs
lib_cmb_unl = sims_generic.Gauss_sim_generic(path_to_libs + '/unl_cmb', cl_unl, HD_shape, lside, nsims_max=nsims)
lib_noise = sims_generic.Gauss_sim_generic(path_to_libs + '/noise', cl_noise, LD_shape, lside, nsims_max=nsims)
lib_pp = sims_generic.Gauss_sim_generic(path_to_libs + '/pp', cl_pp, LD_shape, lside, nsims_max=nsims)
lib_OO = None
lib_displ = sims.displ_2dsim(lib_pp, lib_OO)
lib_displ_sim0 = sims_generic.sim_lib_shuffle(lib_displ, shuffle=lambda idx : 0)
lib_cmb_len = sims.lencmb_sim_lib(lib_cmb_unl, lib_displ) # Library for lensed CMB
lib_cmb_len_displ0 = sims.lencmb_sim_lib(lib_cmb_unl, lib_displ_sim0) # Library for lensed CMB's by identical potential
sim_lib = sims.flatsky_sim_lib(lib_cmb_len, lib_noise, lib_dir=path_to_libs + '/full_sims',
beam_FWHM_amin=beam_FWHM_amin, cache_sims=True, mask_map = None)
fixedphi_sim_lib = sims.flatsky_sim_lib(lib_cmb_len_displ0, lib_noise, beam_FWHM_amin=beam_FWHM_amin,
lib_dir=path_to_libs+'/fxp_sims', cache_sims=True, mask_map = None)
unl_cov = covmatrices.flatsky_unlcov(cl_unl, (HD_res, HD_res), lside, sN_uKamin=sN_uKamin, Beam_FWHM_amin=beam_FWHM_amin, verbose=False)
len_cov = covmatrices.flatsky_lencov(cl_unl, cl_len, LD_res, HD_res, lside,
f = dp.identity_displacement(HD_shape), f_inv = dp.identity_displacement(HD_shape),
verbose=False, sN_uKamin=sN_uKamin, Beam_FWHM_amin =beam_FWHM_amin)
Fisher_lib = likelihoods.flatsky_Fisher_lib(cl_unl, (HD_res, HD_res), lside, sN_uKamin, beam_FWHM_amin, verbose=False)
return [sim_lib,fixedphi_sim_lib,LD_res,HD_res,lside,sN_uKamin,beam_FWHM_amin,cl_unl,cl_len,cl_pp,cl_noise,unl_cov,len_cov,Fisher_lib]
cl_noise = (sN_uKamin * np.pi / 180.0 / 60.0) ** 2 * np.ones(20000) # simple flat noise Cls
path_to_libs = "/Users/jcarron/data/flatsky_lens_simlibs/test_wPL2015" if path_to_libs is None else path_to_libs
path_to_figs = path_to_libs + "/figs"
if not os.path.exists(path_to_libs):
os.mkdir(path_to_libs)
if not os.path.exists(path_to_figs):
os.mkdir(path_to_figs)
lib_cmb_unl = sims_generic.Gauss_sim_generic(path_to_libs + "/unl_cmb", cl_unl, HD_shape, lside, nsims_max=nsims)
lib_pp = sims_generic.Gauss_sim_generic(path_to_libs + "/pp", cl_pp, HD_shape, lside, nsims_max=nsims)
lib_noise = sims_generic.Gauss_sim_generic(path_to_libs + "/noise", cl_noise, LD_shape, lside, nsims_max=nsims)
lib_OO = None
lib_displ = sims.displ_2dsim(lib_pp, lib_OO)
lib_displ_sim0 = sims_generic.sim_lib_shuffle(lib_displ, shuffle=lambda idx: 0)
lib_cmb_len = sims.lencmb_sim_lib(lib_cmb_unl, lib_displ) # Library for lensed CMB
lib_cmb_len_displ0 = sims.lencmb_sim_lib(lib_cmb_unl, lib_displ_sim0) # Library for lensed CMB's by identical potential
sim_lib = sims.flatsky_sim_lib(
lib_cmb_len,
lib_noise,
lib_dir=path_to_libs + "/full_sims",
beam_FWHM_amin=beam_FWHM_amin,
cache_sims=True,
mask_map=None,
)
sim_lib_fixedphi = sims.flatsky_sim_lib(
lib_cmb_len_displ0,