Returns a bool array with True where m is close to badval.
Parameters : | m : a map (may be a sequence of maps) badval : float, optional
rtol : float, optional
atol : float, optional
|
---|---|
Returns : | mask :
|
Examples
>>> import healpy as hp
>>> m = np.arange(12.)
>>> m[3] = hp.UNSEEN
>>> hp.mask_bad(m)
array([False, False, False, True, False, False, False, False, False,
False, False, False], dtype=bool)