backend_module()

Return the specified backend module used for the spherical harmonic transforms in pyshtools.

Usage

module = backend_module([backend, nthreads])

Parameters

backend : str, optional, default = preferred_backend()

Name of the preferred backend, either ‘shtools’ or ‘ducc’.

nthreads : int, optional, default = 1

Number of threads to use for the ‘ducc’ backend. Setting this parameter to 0 will use as many threads as there are hardware threads on the system.