def _mask_nocov(dapmap, mask, ivar=None):
"""Mask spaxels that are not covered by the IFU.
Parameters:
dapmap (marvin.tools.map.Map):
Marvin Map object.
mask (array):
Mask for image.
ivar (array):
Inverse variance for image. Default is None.
Returns:
array: Boolean array for mask (i.e., True corresponds to value to be
masked out).
"""
assert (dapmap is not None) or (mask is not None) or (ivar is not None), \
'Must provide ``dapmap``, ``mask`` or ``ivar``.'
if dapmap is None:
pixmask = Maskbit('MANGA_DAPPIXMASK')
pixmask.mask = mask
else:
pixmask = dapmap.pixmask
try:
return pixmask.get_mask('NOCOV')
except (MarvinError, AttributeError, IndexError, TypeError):
return ivar == 0
def test_values_to_labels(self, values, expected):
mb = Maskbit(name=name, schema=schema, description=description)
if values is None:
mb.mask = mask
actual = mb.values_to_labels(values=values)
assert actual == expected
def test_get_mask_empty(self, labels, dtype, expected):
mb = Maskbit(name=name, schema=schema, description=description)
mb.mask = mask
actual = mb.get_mask(labels, mask=custom_mask, dtype=dtype)
assert (actual == expected).all()
def test_get_mask_bool(self, labels, expected):
mb = Maskbit(name=name, schema=schema, description=description)
mb.mask = mask
actual = mb.get_mask(labels, dtype=bool)
assert (actual == expected).all()