Public Member Functions |
Public Attributes |
Static Public Attributes |
Protected Member Functions |
Static Protected Member Functions |
List of all members
lsst.meas.algorithms.simple_curve.Curve Class Reference
Inheritance diagram for lsst.meas.algorithms.simple_curve.Curve:
Public Member Functions | |
| __init__ (self, wavelength, efficiency, metadata) | |
| fromTable (cls, table) | |
| toTable (self) | |
| evaluate (self, detector, position, wavelength, kind='linear', bounds_error=False, fill_value=0) | |
| __init_subclass__ (cls, **kwargs) | |
| __eq__ (self, other) | |
| compare_metadata (self, other, keys_to_compare=['MODE', 'TYPE', 'CALIBDATE', 'INSTRUME', 'OBSTYPE', 'DETECTOR']) | |
| interpolate (self, wavelengths, values, wavelength, kind, bounds_error, fill_value) | |
| getMetadata (self) | |
| readText (cls, filename) | |
| readFits (cls, filename) | |
| writeText (self, filename) | |
| writeFits (self, filename) | |
Public Attributes | |
| wavelength = wavelength | |
| efficiency = efficiency | |
| metadata = metadata | |
Static Public Attributes | |
| str | mode = '' |
| subclasses = dict() | |
Protected Member Functions | |
| _to_table_with_meta (self) | |
Static Protected Member Functions | |
| _check_cols (cols, table) | |
Detailed Description
An abstract class to represent an arbitrary curve with interpolation.
Definition at line 38 of file simple_curve.py.
Constructor & Destructor Documentation
◆ __init__()
| lsst.meas.algorithms.simple_curve.Curve.__init__ | ( | self, | |
| wavelength, | |||
| efficiency, | |||
| metadata ) |
Definition at line 45 of file simple_curve.py.
45 def __init__(self, wavelength, efficiency, metadata):
46 if not (isinstance(wavelength, u.Quantity) and wavelength.unit.physical_type == 'length'):
47 raise ValueError('The wavelength must be a quantity with a length sense.')
48 if not isinstance(efficiency, u.Quantity) or efficiency.unit != u.percent:
49 raise ValueError('The efficiency must be a quantity with units of percent.')
50 self.wavelength = wavelength
51 self.efficiency = efficiency
52 # make sure needed metadata is set if built directly from ctor.
53 metadata.update({'MODE': self.mode, 'TYPE': 'QE'})
54 self.metadata = metadata
55
Member Function Documentation
◆ __eq__()
| lsst.meas.algorithms.simple_curve.Curve.__eq__ | ( | self, | |
| other ) |
Define equality for this class
Definition at line 134 of file simple_curve.py.
134 def __eq__(self, other):
135 """Define equality for this class"""
136 pass
137
◆ __init_subclass__()
| lsst.meas.algorithms.simple_curve.Curve.__init_subclass__ | ( | cls, | |
| ** | kwargs ) |
Register subclasses with the abstract base class
Definition at line 126 of file simple_curve.py.
126 def __init_subclass__(cls, **kwargs):
127 """Register subclasses with the abstract base class"""
128 super().__init_subclass__(**kwargs)
129 if cls.mode in Curve.subclasses:
130 raise ValueError(f'Class for mode, {cls.mode}, already defined')
131 Curve.subclasses[cls.mode] = cls
132
◆ _check_cols()
|
staticprotected |
Check that the columns are in the table
Definition at line 237 of file simple_curve.py.
237 def _check_cols(cols, table):
238 """Check that the columns are in the table"""
239 for col in cols:
240 if col not in table.columns:
241 raise ValueError(f'The table must include a column named "{col}".')
242
◆ _to_table_with_meta()
|
protected |
Compute standard metadata before writing file out
Definition at line 243 of file simple_curve.py.
243 def _to_table_with_meta(self):
244 """Compute standard metadata before writing file out"""
245 now = datetime.datetime.utcnow()
246 table = self.toTable()
247 metadata = table.meta
248 metadata["DATE"] = now.isoformat()
249 metadata["CALIB_CREATION_DATE"] = now.strftime("%Y-%m-%d")
250 metadata["CALIB_CREATION_TIME"] = now.strftime("%T %Z").strip()
251 return table
252
◆ compare_metadata()
| lsst.meas.algorithms.simple_curve.Curve.compare_metadata | ( | self, | |
| other, | |||
| keys_to_compare = ['MODE', 'TYPE', 'CALIBDATE', 'INSTRUME', 'OBSTYPE', 'DETECTOR'] ) |
Compare metadata in this object to another.
Parameters
----------
other : `Curve`
The object with which to compare metadata.
keys_to_compare : `list`
List of metadata keys to compare.
Returns
-------
same : `bool`
Are the metadata the same?
Definition at line 138 of file simple_curve.py.
139 keys_to_compare=['MODE', 'TYPE', 'CALIBDATE', 'INSTRUME', 'OBSTYPE', 'DETECTOR']):
140 """Compare metadata in this object to another.
141
142 Parameters
143 ----------
144 other : `Curve`
145 The object with which to compare metadata.
146 keys_to_compare : `list`
147 List of metadata keys to compare.
148
149 Returns
150 -------
151 same : `bool`
152 Are the metadata the same?
153 """
154 for k in keys_to_compare:
155 if self.metadata[k] != other.metadata[k]:
156 return False
157 return True
158
◆ evaluate()
| lsst.meas.algorithms.simple_curve.Curve.evaluate | ( | self, | |
| detector, | |||
| position, | |||
| wavelength, | |||
| kind = 'linear', | |||
| bounds_error = False, | |||
| fill_value = 0 ) |
Interpolate the curve at the specified position and wavelength.
Parameters
----------
detector : `lsst.afw.cameraGeom.Detector`
Is used to find the appropriate curve given the position for
curves that vary over the detector. Ignored in the case where
there is only a single curve per detector.
position : `lsst.geom.Point2D`
The position on the detector at which to evaluate the curve.
wavelength : `astropy.units.Quantity`
The wavelength(s) at which to make the interpolation.
kind : `str`, optional
The type of interpolation to do (default is 'linear').
See documentation for `scipy.interpolate.interp1d` for
accepted values.
bounds_error : `bool`, optional
Raise error if interpolating outside the range of x?
(default is False)
fill_value : `float`, optional
Fill values outside the range of x with this value
(default is 0).
Returns
-------
value : `astropy.units.Quantity`
Interpolated value(s). Number of values returned will match the
length of `wavelength`.
Raises
------
ValueError
If the ``bounds_error`` is changed from the default, it will raise
a `ValueError` if evaluating outside the bounds of the curve.
Reimplemented in lsst.meas.algorithms.simple_curve.AmpCurve, lsst.meas.algorithms.simple_curve.DetectorCurve, and lsst.meas.algorithms.simple_curve.ImageCurve.
Definition at line 87 of file simple_curve.py.
87 def evaluate(self, detector, position, wavelength, kind='linear', bounds_error=False, fill_value=0):
88 """Interpolate the curve at the specified position and wavelength.
89
90 Parameters
91 ----------
92 detector : `lsst.afw.cameraGeom.Detector`
93 Is used to find the appropriate curve given the position for
94 curves that vary over the detector. Ignored in the case where
95 there is only a single curve per detector.
96 position : `lsst.geom.Point2D`
97 The position on the detector at which to evaluate the curve.
98 wavelength : `astropy.units.Quantity`
99 The wavelength(s) at which to make the interpolation.
100 kind : `str`, optional
101 The type of interpolation to do (default is 'linear').
102 See documentation for `scipy.interpolate.interp1d` for
103 accepted values.
104 bounds_error : `bool`, optional
105 Raise error if interpolating outside the range of x?
106 (default is False)
107 fill_value : `float`, optional
108 Fill values outside the range of x with this value
109 (default is 0).
110
111 Returns
112 -------
113 value : `astropy.units.Quantity`
114 Interpolated value(s). Number of values returned will match the
115 length of `wavelength`.
116
117 Raises
118 ------
119 ValueError
120 If the ``bounds_error`` is changed from the default, it will raise
121 a `ValueError` if evaluating outside the bounds of the curve.
122 """
123 pass
124
◆ fromTable()
| lsst.meas.algorithms.simple_curve.Curve.fromTable | ( | cls, | |
| table ) |
Class method for constructing a `Curve` object.
Parameters
----------
table : `astropy.table.QTable`
Table containing metadata and columns necessary
for constructing a `Curve` object.
Returns
-------
curve : `Curve`
A `Curve` subclass of the appropriate type according
to the table metadata
Reimplemented in lsst.meas.algorithms.simple_curve.AmpCurve, lsst.meas.algorithms.simple_curve.DetectorCurve, and lsst.meas.algorithms.simple_curve.ImageCurve.
Definition at line 58 of file simple_curve.py.
58 def fromTable(cls, table):
59 """Class method for constructing a `Curve` object.
60
61 Parameters
62 ----------
63 table : `astropy.table.QTable`
64 Table containing metadata and columns necessary
65 for constructing a `Curve` object.
66
67 Returns
68 -------
69 curve : `Curve`
70 A `Curve` subclass of the appropriate type according
71 to the table metadata
72 """
73 pass
74
◆ getMetadata()
| lsst.meas.algorithms.simple_curve.Curve.getMetadata | ( | self | ) |
Return metadata
Returns
-------
metadata : `dict`
Dictionary of metadata for this curve.
Definition at line 187 of file simple_curve.py.
187 def getMetadata(self):
188 """Return metadata
189
190 Returns
191 -------
192 metadata : `dict`
193 Dictionary of metadata for this curve.
194 """
195 # Needed to duck type as an object that can be ingested
196 return self.metadata
197
◆ interpolate()
| lsst.meas.algorithms.simple_curve.Curve.interpolate | ( | self, | |
| wavelengths, | |||
| values, | |||
| wavelength, | |||
| kind, | |||
| bounds_error, | |||
| fill_value ) |
Interplate the curve at the specified wavelength(s).
Parameters
----------
wavelengths : `astropy.units.Quantity`
The wavelength values for the curve.
values : `astropy.units.Quantity`
The y-values for the curve.
wavelength : `astropy.units.Quantity`
The wavelength(s) at which to make the interpolation.
kind : `str`
The type of interpolation to do. See documentation for
`scipy.interpolate.interp1d` for accepted values.
Returns
-------
value : `astropy.units.Quantity`
Interpolated value(s)
Definition at line 159 of file simple_curve.py.
159 def interpolate(self, wavelengths, values, wavelength, kind, bounds_error, fill_value):
160 """Interplate the curve at the specified wavelength(s).
161
162 Parameters
163 ----------
164 wavelengths : `astropy.units.Quantity`
165 The wavelength values for the curve.
166 values : `astropy.units.Quantity`
167 The y-values for the curve.
168 wavelength : `astropy.units.Quantity`
169 The wavelength(s) at which to make the interpolation.
170 kind : `str`
171 The type of interpolation to do. See documentation for
172 `scipy.interpolate.interp1d` for accepted values.
173
174 Returns
175 -------
176 value : `astropy.units.Quantity`
177 Interpolated value(s)
178 """
179 if not isinstance(wavelength, u.Quantity):
180 raise ValueError("Wavelengths at which to interpolate must be astropy quantities")
181 if not (isinstance(wavelengths, u.Quantity) and isinstance(values, u.Quantity)):
182 raise ValueError("Model to be interpreted must be astropy quantities")
183 interp_wavelength = wavelength.to(wavelengths.unit)
184 f = interp1d(wavelengths, values, kind=kind, bounds_error=bounds_error, fill_value=fill_value)
185 return f(interp_wavelength.value)*values.unit
186
◆ readFits()
| lsst.meas.algorithms.simple_curve.Curve.readFits | ( | cls, | |
| filename ) |
Class method for constructing a `Curve` object from
the standardized FITS format.
Parameters
----------
filename : `str`
Path to the FITS file to read.
Returns
-------
curve : `Curve`
A `Curve` subclass of the appropriate type according
to the table metadata
Definition at line 218 of file simple_curve.py.
218 def readFits(cls, filename):
219 """Class method for constructing a `Curve` object from
220 the standardized FITS format.
221
222 Parameters
223 ----------
224 filename : `str`
225 Path to the FITS file to read.
226
227 Returns
228 -------
229 curve : `Curve`
230 A `Curve` subclass of the appropriate type according
231 to the table metadata
232 """
233 table = QTable.read(filename, format='fits')
234 return cls.subclasses[table.meta['MODE']].fromTable(table)
235
◆ readText()
| lsst.meas.algorithms.simple_curve.Curve.readText | ( | cls, | |
| filename ) |
Class method for constructing a `Curve` object from
the standardized text format.
Parameters
----------
filename : `str`
Path to the text file to read.
Returns
-------
curve : `Curve`
A `Curve` subclass of the appropriate type according
to the table metadata
Definition at line 199 of file simple_curve.py.
199 def readText(cls, filename):
200 """Class method for constructing a `Curve` object from
201 the standardized text format.
202
203 Parameters
204 ----------
205 filename : `str`
206 Path to the text file to read.
207
208 Returns
209 -------
210 curve : `Curve`
211 A `Curve` subclass of the appropriate type according
212 to the table metadata
213 """
214 table = QTable.read(filename, format='ascii.ecsv')
215 return cls.subclasses[table.meta['MODE']].fromTable(table)
216
◆ toTable()
| lsst.meas.algorithms.simple_curve.Curve.toTable | ( | self | ) |
Convert this `Curve` object to an `astropy.table.QTable`.
Returns
-------
table : `astropy.table.QTable`
A table object containing the data from this `Curve`.
Reimplemented in lsst.meas.algorithms.simple_curve.AmpCurve, lsst.meas.algorithms.simple_curve.DetectorCurve, and lsst.meas.algorithms.simple_curve.ImageCurve.
Definition at line 76 of file simple_curve.py.
76 def toTable(self):
77 """Convert this `Curve` object to an `astropy.table.QTable`.
78
79 Returns
80 -------
81 table : `astropy.table.QTable`
82 A table object containing the data from this `Curve`.
83 """
84 pass
85
◆ writeFits()
| lsst.meas.algorithms.simple_curve.Curve.writeFits | ( | self, | |
| filename ) |
Write the `Curve` out to a FITS file.
Parameters
----------
filename : `str`
Path to the FITS file to write.
Returns
-------
filename : `str`
Because this method forces a particular extension return
the name of the file actually written.
Definition at line 274 of file simple_curve.py.
274 def writeFits(self, filename):
275 """ Write the `Curve` out to a FITS file.
276
277 Parameters
278 ----------
279 filename : `str`
280 Path to the FITS file to write.
281
282 Returns
283 -------
284 filename : `str`
285 Because this method forces a particular extension return
286 the name of the file actually written.
287 """
288 table = self._to_table_with_meta()
289 # Force file extension to .ecsv
290 path, ext = os.path.splitext(filename)
291 filename = path + ".fits"
292 table.write(filename, format="fits")
293 return filename
294
295
◆ writeText()
| lsst.meas.algorithms.simple_curve.Curve.writeText | ( | self, | |
| filename ) |
Write the `Curve` out to a text file.
Parameters
----------
filename : `str`
Path to the text file to write.
Returns
-------
filename : `str`
Because this method forces a particular extension return
the name of the file actually written.
Definition at line 253 of file simple_curve.py.
253 def writeText(self, filename):
254 """ Write the `Curve` out to a text file.
255
256 Parameters
257 ----------
258 filename : `str`
259 Path to the text file to write.
260
261 Returns
262 -------
263 filename : `str`
264 Because this method forces a particular extension return
265 the name of the file actually written.
266 """
267 table = self._to_table_with_meta()
268 # Force file extension to .ecsv
269 path, ext = os.path.splitext(filename)
270 filename = path + ".ecsv"
271 table.write(filename, format="ascii.ecsv")
272 return filename
273
Member Data Documentation
◆ efficiency
| lsst.meas.algorithms.simple_curve.Curve.efficiency = efficiency |
Definition at line 51 of file simple_curve.py.
◆ metadata
| lsst.meas.algorithms.simple_curve.Curve.metadata = metadata |
Definition at line 54 of file simple_curve.py.
◆ mode
|
static |
Definition at line 42 of file simple_curve.py.
◆ subclasses
|
static |
Definition at line 43 of file simple_curve.py.
◆ wavelength
| lsst.meas.algorithms.simple_curve.Curve.wavelength = wavelength |
Definition at line 50 of file simple_curve.py.
The documentation for this class was generated from the following file:
- /j/snowflake/release/lsstsw/stack/lsst-scipipe-12.1.0/Linux/meas_algorithms/gcc769fe2a4+97d0256649/python/lsst/meas/algorithms/simple_curve.py
Generated on Thu Nov 27 2025 09:15:17 for LSST Applications by
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