skymodel.sample_sphere_uniform

skymodel.sample_sphere_uniform(n, mask=None, radec=True)

Draws uniformly sampled tuples of coordinates on the sphere. All-sky masks in the healpix format can be applied, in which case masked areas will be excluded.

Parameters

n: int

Number of data points to be drawn

mask: float array, optional

All-sky healpix mask. If a mask is used data points will only be drawn in areas that are not masked. If mask is set to ‘advACT’, ‘SPT’, ‘Dust’, or ‘NVSS’, the respective survey masks will be used. Default: None

radec: bool, optional

Determines the coordinate system of the output. If True, equatorial coordinates will be returned, i.e. RA, DEC (fk5). If False, galactic coordinates are returned. Default: True

Returns

phi, theta

longitude and latitude of sampled points in equatorial or galactic coordinate system