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LSST Data Management Base Package
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_footprintMerge.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# (http://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 <http://www.gnu.org/licenses/>.
21
22__all__ = [] # only imported for side effects
23
24from lsst.utils import continueClass
25from ._detection import FootprintMergeList
26
27
28@continueClass
29class FootprintMergeList: # noqa: F811
30 def getMergedSourceCatalog(self, catalogs, filters,
31 peakDist, schema, idFactory, samePeakDist):
32 """Add multiple catalogs and get the SourceCatalog with merged Footprints
33
34 Parameters
35 ----------
36 catalogs : `list` [`lsst.afw.table.SourceCatalog`]
37 list of catalogs
38 filters : `list` [`str`]
39 list of filters
40 peakDist : `float` or `list` [`float`]
41 distance between source peaks
42 schema : `lsst.afw.table.Schema`
43 idFactory : `lsst.afw.table.IdFactory`
44 samePeakDist : `float` or `list [`float`]
45 distance between source peaks (check)
46
47 Returns
48 -------
49 mergedList : `lsst.afw.table.SourceCatalog`
50 merged list of sources
51
52 See also
53 --------
54 lsst.afw.table.SourceTable
55
56 """
57
58 import lsst.afw.table as afwTable
59
60 table = afwTable.SourceTable.make(schema, idFactory)
61 mergedList = afwTable.SourceCatalog(table)
62
63 # if peak is not an array, create an array the size of catalogs
64 try:
65 len(samePeakDist)
66 except TypeError:
67 samePeakDist = [samePeakDist] * len(catalogs)
68
69 try:
70 len(peakDist)
71 except TypeError:
72 peakDist = [peakDist] * len(catalogs)
73
74 if len(peakDist) != len(catalogs):
75 raise ValueError("Number of catalogs (%d) does not match length of peakDist (%d)"
76 % (len(catalogs), len(peakDist)))
77
78 if len(samePeakDist) != len(catalogs):
79 raise ValueError("Number of catalogs (%d) does not match length of samePeakDist (%d)"
80 % (len(catalogs), len(samePeakDist)))
81
82 if len(filters) != len(catalogs):
83 raise ValueError("Number of catalogs (%d) does not match number of filters (%d)"
84 % (len(catalogs), len(filters)))
85
86 self.clearCatalog()
87 for cat, filter, dist, sameDist in zip(catalogs, filters, peakDist, samePeakDist):
88 self.addCatalog(table, cat, filter, dist, True, sameDist)
89
90 self.getFinalSources(mergedList)
91 return mergedList
getMergedSourceCatalog(self, catalogs, filters, peakDist, schema, idFactory, samePeakDist)