treams.misc.basischange

treams.misc.basischange(out, in_=None)

Coefficients for the basis change between helicity and parity modes.

Parameters:

• out (3- or 4-tuple of (M,)-arrays) – Output modes, the last array is taken as polarization.

• in (3- or 4-tuple of (N,)-arrays, optional) – Input modes, if none are given, equal to the output modes

Returns:

float, ((M, N)-array