plancklens.filt.filt_cinv¶
conjugate gradient solver CMB filtering module.
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class
plancklens.filt.filt_cinv.
cinv_t
(lib_dir, lmax, nside, cl, transf, ninv, marge_monopole=True, marge_dipole=True, marge_maps=(), pcf='default', chain_descr=None)[source]¶ Temperature-only inverse-variance (or Wiener-)filtering instance.
Parameters: - lib_dir – mask and other things will be cached there
- lmax – filtered alm’s are reconstructed up to lmax
- nside – healpy resolution of maps to filter
- cl – fiducial CMB spectra used to filter the data (dict with ‘tt’ key)
- transf – CMB maps transfer function (array)
- ninv – inverse pixel variance map. Must be a list of paths or of healpy maps with consistent nside.
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class
plancklens.filt.filt_cinv.
cinv_p
(lib_dir, lmax, nside, cl, transf, ninv, pcf='default', chain_descr=None, transf_blm=None, marge_qmaps=(), marge_umaps=())[source]¶ Polarization-only inverse-variance (or Wiener-)filtering instance.
Parameters: - lib_dir – mask and other things will be cached there
- lmax – filtered alm’s are reconstructed up to lmax
- nside – healpy resolution of maps to filter
- cl – fiducial CMB spectra used to filter the data (dict with ‘tt’ key)
- transf – CMB E-mode polarization transfer function (array)
- ninv – inverse pixel variance maps. Must be a list of either 3 (QQ, QU, UU) or 1 (QQ = UU noise) elements. These element are themselves list of paths or of healpy maps with consistent nside.
- transf_blm (optional) – B-polarization transfer function (if different from E-mode one)
Note
This implementation now supports template projection
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class
plancklens.filt.filt_cinv.
library_cinv_sepTP
(lib_dir, sim_lib, cinvt: plancklens.filt.filt_cinv.cinv_t, cinvp: plancklens.filt.filt_cinv.cinv_p, cl_weights: dict, soltn_lib=None)[source]¶ Library to perform inverse-variance filtering of a simulation library.
Suitable for separate temperature and polarization filtering.
Parameters: - lib_dir (str) – a
- sim_lib – simulation library instance (requires get_sim_tmap, get_sim_pmap methods)
- cinvt – temperature-only filtering library
- cinvp – poalrization-only filtering library
- soltn_lib (optional) – simulation libary providing starting guesses for the filtering.
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get_fbl
(lmax=None)[source]¶ Isotropic approximation to B-polarization inverse variance filtering.
\(F^{B}_\ell = (C_\ell^{BB} + N^{B}_\ell / b_\ell^2)^{-1}\)
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class
plancklens.filt.filt_cinv.
library_cinv_jTP
(lib_dir: str, sim_lib, cinv_jtp: plancklens.filt.filt_cinv.cinv_tp, cl_weights: dict, soltn_lib=None)[source]¶ Library to perform inverse-variance filtering of a simulation library.
Suitable for separate temperature and polarization filtering.
Parameters: - lib_dir (str) – a place to cache the maps
- sim_lib – simulation library instance (requires get_sim_tmap, get_sim_pmap methods)
- cinv_jtp – temperature and pol joint filtering library
- cl_weights – spectra used to build the Wiener filtered leg from the inverse-variance maps
- soltn_lib (optional) – simulation libary providing starting guesses for the filtering.