maps : array or sequence of 3 arrays
Either an array representing one map, or a sequence of
3 arrays representing 3 maps
fwhm : float, optional
The full width half max parameter of the Gaussian. Default:0.0
sigma : float, optional
The sigma of the Gaussian. Override fwhm.
invert : bool, optional
If True, alms are divided by Gaussian beam function (un-smooth).
Otherwise, alms are multiplied by Gaussian beam function (smooth).
Default: False.
pol : bool, optional
If True, assumes input maps are TQU. Output will be TQU maps.
(input must be 1 or 3 alms)
If False, each map is assumed to be a spin 0 map and is
treated independently (input can be any number of alms).
If there is only one input map, it has no effect. Default: True.
iter : int, scalar, optional
Number of iteration (default: 3)
lmax : int, scalar, optional
Maximum l of the power spectrum. Default: 3*nside-1
mmax : int, scalar, optional
Maximum m of the alm. Default: lmax
use_weights: bool, scalar, optional :
If True, use the ring weighting. Default: False.
regression: bool, scalar, optional :
If True, subtract map average before computing alm. Default: True.
datapath : None or str, optional
If given, the directory where to find the weights data.
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