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LSST Data Management Base Package
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fit_multiband.py
Go to the documentation of this file.
1# This file is part of pipe_tasks.
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__ = ["CatalogExposure", "CatalogExposureConfig", ]
23
24from functools import cached_property
25from pydantic import Field, ConfigDict
26from pydantic.dataclasses import dataclass
27
28import lsst.afw.image as afwImage
29import lsst.afw.table as afwTable
30import lsst.daf.butler as dafButler
31
32
33CatalogExposureConfig = ConfigDict(arbitrary_types_allowed=True)
34
35
36@dataclass(frozen=True, kw_only=True, config=CatalogExposureConfig)
38 """A class to store a catalog, exposure, and metadata for a given dataId.
39
40 The intent is to store an exposure and an associated measurement catalog.
41 Users may omit one but not both (e.g. if the intent is just to attach
42 a dataId and metadata to a catalog or exposure).
43 """
44 @cached_property
45 def band(self) -> str:
46 return self.dataId['band']
47
48 @cached_property
49 def calib(self) -> afwImage.PhotoCalib | None:
50 return None if self.exposure is None else self.exposure.getPhotoCalib()
51
52 dataId: dafButler.DataCoordinate | dict = Field(
53 title="A DataCoordinate or dict containing a 'band' item")
54 catalog: afwTable.SourceCatalog | None = Field(None, title="The measurement catalog, if any")
55 exposure: afwImage.Exposure | None = Field(None, title="The exposure, if any")
56 id_tract_patch: int = Field(0, title="A unique ID for this tract-patch pair")
57 metadata: dict = Field(default_factory=dict, title="Arbitrary metadata")
58
59 def __post_init__(self):
60 if self.catalog is None and self.exposure is None:
61 raise ValueError("Must specify at least one of catalog/exposure")
62 if 'band' not in self.dataId:
63 raise ValueError(f"dataId={self.dataId} must have a band")
OptionalString band
A class to contain the data, WCS, and other information needed to describe an image of the sky.
Definition Exposure.h:72
Key< int > calib
Definition Exposure.cc:66