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LSST Data Management Base Package
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_mask.py
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1# This file is part of afw.
2#
3# Developed for the LSST Data Management System.
4# This product includes software developed by the LSST Project
5# (https://www.lsst.org).
6# See the COPYRIGHT file at the top-level directory of this distribution
7# for details of code ownership.
8#
9# This program is free software: you can redistribute it and/or modify
10# it under the terms of the GNU General Public License as published by
11# the Free Software Foundation, either version 3 of the License, or
12# (at your option) any later version.
13#
14# This program is distributed in the hope that it will be useful,
15# but WITHOUT ANY WARRANTY; without even the implied warranty of
16# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17# GNU General Public License for more details.
18#
19# You should have received a copy of the GNU General Public License
20# along with this program. If not, see <https://www.gnu.org/licenses/>.
21
22__all__ = ["Mask", "MaskPixel"]
23
24import numpy as np
25
26from lsst.utils import TemplateMeta
27from ._fitsIoWithOptions import imageReadFitsWithOptions, imageWriteFitsWithOptions
28from ._imageLib import MaskX
29from ._slicing import supportSlicing
30from ._disableArithmetic import disableMaskArithmetic
31
32MaskPixel = np.int32
33
34
35class Mask(metaclass=TemplateMeta):
36 TEMPLATE_PARAMS = ("dtype",)
37 TEMPLATE_DEFAULTS = (MaskPixel,)
38
39 def __reduce__(self):
40 from lsst.afw.fits import reduceToFits
41 return reduceToFits(self)
42
43 def __str__(self):
44 return "{}, bbox={}, maskPlaneDict={}".format(self.array, self.getBBox(), self.getMaskPlaneDict())
45
46 def __repr__(self):
47 return "{}.{}={}".format(self.__module__, self.__class__.__name__, str(self))
48
49 readFitsWithOptions = classmethod(imageReadFitsWithOptions)
50
51 def writeFitsWithOptions(self, dest, options, item=None):
52 """Write an Mask to FITS, with options
53
54 Parameters
55 ----------
56 dest : `str`
57 Fits file path to which to write the mask.
58 options : `lsst.daf.base.PropertySet`
59 Write options. The item ``item`` is read.
60 It must contain an `lsst.daf.base.PropertySet` with data for
61 ``lsst.afw.fits.ImageWriteOptions``.
62 item : `str`, optional
63 Item to read from the ``options`` parameter.
64 If not specified it will default to "mask" if present, else
65 will fallback to the generic "image" options.
66 """
67 if item is None:
68 # Fallback to "image" if "mask" is missing. This allows older
69 # code that assumed "image" to still function.
70 item = "mask" if "mask" in options else "image"
71 return imageWriteFitsWithOptions(self, dest, options, item=item)
72
73
74Mask.register(MaskPixel, MaskX)
75Mask.alias("X", MaskX)
76
77for cls in (MaskX, ):
78 supportSlicing(cls)
79 disableMaskArithmetic(cls)
writeFitsWithOptions(self, dest, options, item=None)
Definition _mask.py:51