Coverage for python/lsst/afw/geom/transformFromString.py : 33%

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1#
2# LSST Data Management System
3# Copyright 2017 LSST/AURA.
4#
5# This product includes software developed by the
6# LSST Project (http://www.lsst.org/).
7#
8# This program is free software: you can redistribute it and/or modify
9# it under the terms of the GNU General Public License as published by
10# the Free Software Foundation, either version 3 of the License, or
11# (at your option) any later version.
12#
13# This program is distributed in the hope that it will be useful,
14# but WITHOUT ANY WARRANTY; without even the implied warranty of
15# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16# GNU General Public License for more details.
17#
18# You should have received a copy of the LSST License Statement and
19# the GNU General Public License along with this program. If not,
20# see <http://www.lsstcorp.org/LegalNotices/>.
21#
23from .python import transformRegistry
25__all__ = ["transformFromString"]
28def transformFromString(data):
29 """Read a Transform from a string that was saved using
30 ``Transform.writeString``
32 Unlike ``Transform.readString``, you need not know the ``Transform`` class in
33 advance
35 Parameters
36 ----------
37 data : `str`
38 A string in the format produced by ``Transform.writeString``.
40 Returns
41 -------
42 transform : a ``Transform`` class
43 An object of the same type used to create ``data``.
44 """
45 version, transformClassName, remainder = data.split(" ", 2)
46 try:
47 transformClass = transformRegistry[transformClassName]
48 except LookupError:
49 raise RuntimeError(f"Unknown transform class {transformClassName!r}")
51 return transformClass.readString(data)