skymask¶

pydl.pydlspec2d.spec1d.skymask(invvar, andmask, ormask=None, ngrow=2)[source]¶

Mask regions where sky-subtraction errors are expected to dominate.

Parameters

invvarnumpy.ndarray: Inverse variance.
andmasknumpy.ndarray: An “and” mask. For historical reasons, this input is ignored.
ormasknumpy.ndarray, optional: An “or” mask. Although technically this is optional, if it is not supplied, this function will have no effect.
ngrowint, optional: Expand bad areas by this number of pixels.

Returns