lsst.skymap.patchInfo.PatchInfo Class Reference
Public Member Functions | |
| __init__ (self, index, innerBBox, outerBBox, sequentialIndex, tractWcs, cellInnerDimensions=(0, 0), cellBorder=0, numCellsPerPatchInner=0, numCellsInPatchBorder=0) | |
| getIndex (self) | |
| getSequentialIndex (self) | |
| getWcs (self) | |
| getInnerBBox (self) | |
| getOuterBBox (self) | |
| getInnerSkyPolygon (self, tractWcs=None) | |
| inner_sky_polygon (self) | |
| getOuterSkyPolygon (self, tractWcs=None) | |
| outer_sky_polygon (self) | |
| getNumCells (self) | |
| getCellBorder (self) | |
| getCellInfo (self, index) | |
| getCellInnerDimensions (self) | |
| getSequentialCellIndex (self, cellInfo) | |
| getSequentialCellIndexFromPair (self, index) | |
| getCellIndexPair (self, sequentialIndex) | |
| __iter__ (self) | |
| __len__ (self) | |
| __getitem__ (self, index) | |
| __eq__ (self, rhs) | |
| __ne__ (self, rhs) | |
| __str__ (self) | |
| __repr__ (self) | |
Protected Attributes | |
| _index = index | |
| _sequentialIndex = sequentialIndex | |
| _innerBBox = innerBBox | |
| _outerBBox = outerBBox | |
| _wcs = tractWcs | |
| _cellInnerDimensions = Extent2I(*cellInnerDimensions) | |
| _cellBorder = cellBorder | |
| _numCellsInPatchBorder = numCellsInPatchBorder | |
| _numCells = Index2D(x=0, y=0) | |
Properties | |
| index = property(getIndex) | |
| sequential_index = property(getSequentialIndex) | |
| wcs = property(getWcs) | |
| inner_bbox = property(getInnerBBox) | |
| outer_bbox = property(getOuterBBox) | |
| num_cells = property(getNumCells) | |
| cell_border = property(getCellBorder) | |
| cell_inner_dimensions = property(getCellInnerDimensions) | |
Detailed Description
Information about a patch within a tract of a sky map.
If cellInnerDimensions and cellBorder are set then the patch
will be gridded with cells.
See `TractInfo` for more information.
Parameters
----------
index : `lsst.skymap.Index2D`
x,y index of patch (a pair of ints)
innerBBox : `lsst.geom.Box2I`
inner bounding box
outerBBox : `lsst.geom.Box2I`
inner bounding box
sequentialIndex : `int`
Patch sequential index
tractWcs : `lsst.afw.geom.SkyWcs`
Tract WCS object.
cellInnerDimensions : `~collections.abc.Iterable` of 2 `int` or \
`lsst.geom.Extent2I`, optional
Inner dimensions of each cell (x,y pixels).
cellBorder : `int`, optional
Cell border size (pixels).
numCellsPerPatchInner : `int`, optional
Number of cells per inner patch region.
numCellsInPatchBorder : `int`, optional
Number of cells in the patch border.
Definition at line 33 of file patchInfo.py.
Constructor & Destructor Documentation
◆ __init__()
| lsst.skymap.patchInfo.PatchInfo.__init__ | ( | self, | |
| index, | |||
| innerBBox, | |||
| outerBBox, | |||
| sequentialIndex, | |||
| tractWcs, | |||
| cellInnerDimensions = (0, 0), | |||
| cellBorder = 0, | |||
| numCellsPerPatchInner = 0, | |||
| numCellsInPatchBorder = 0 ) |
Definition at line 64 of file patchInfo.py.
67 numCellsPerPatchInner=0, numCellsInPatchBorder=0):
68 self._index = index
69 self._sequentialIndex = sequentialIndex
70 self._innerBBox = innerBBox
71 self._outerBBox = outerBBox
72 self._wcs = tractWcs
73 if not outerBBox.contains(innerBBox):
74 raise RuntimeError("outerBBox=%s does not contain innerBBox=%s" % (outerBBox, innerBBox))
75 if not isinstance(cellInnerDimensions, (Iterable, Extent2I)):
76 raise ValueError("Input cellInnerDimensions is not an iterable.")
77 if len(cellInnerDimensions) != 2:
78 raise ValueError("Input cellInnerDimensions does not have two values.")
79 self._cellInnerDimensions = Extent2I(*cellInnerDimensions)
80 self._cellBorder = cellBorder
81 self._numCellsInPatchBorder = numCellsInPatchBorder
82 if numCellsPerPatchInner == 0:
83 self._numCells = Index2D(x=0, y=0)
84 else:
85 # There are numCellsInPatchBorder extra boundary cell on each side
86 self._numCells = Index2D(x=numCellsPerPatchInner + 2*numCellsInPatchBorder,
87 y=numCellsPerPatchInner + 2*numCellsInPatchBorder)
88
Member Function Documentation
◆ __eq__()
| lsst.skymap.patchInfo.PatchInfo.__eq__ | ( | self, | |
| rhs ) |
Definition at line 350 of file patchInfo.py.
350 def __eq__(self, rhs):
351 return (self.getIndex() == rhs.getIndex()) \
352 and (self.getInnerBBox() == rhs.getInnerBBox()) \
353 and (self.getOuterBBox() == rhs.getOuterBBox()) \
354 and (self.getNumCells() == rhs.getNumCells()) \
355 and (self.getCellBorder() == rhs.getCellBorder())
356
◆ __getitem__()
| lsst.skymap.patchInfo.PatchInfo.__getitem__ | ( | self, | |
| index ) |
Definition at line 347 of file patchInfo.py.
347 def __getitem__(self, index):
348 return self.getCellInfo(index)
349
◆ __iter__()
| lsst.skymap.patchInfo.PatchInfo.__iter__ | ( | self | ) |
Definition at line 337 of file patchInfo.py.
337 def __iter__(self):
338 xNum, yNum = self.getNumCells()
339 for y in range(yNum):
340 for x in range(xNum):
341 yield self.getCellInfo(Index2D(x=x, y=y))
342
◆ __len__()
| lsst.skymap.patchInfo.PatchInfo.__len__ | ( | self | ) |
Definition at line 343 of file patchInfo.py.
343 def __len__(self):
344 xNum, yNum = self.getNumCells()
345 return xNum*yNum
346
◆ __ne__()
| lsst.skymap.patchInfo.PatchInfo.__ne__ | ( | self, | |
| rhs ) |
Definition at line 357 of file patchInfo.py.
357 def __ne__(self, rhs):
358 return not self.__eq__(rhs)
359
◆ __repr__()
| lsst.skymap.patchInfo.PatchInfo.__repr__ | ( | self | ) |
Definition at line 363 of file patchInfo.py.
363 def __repr__(self):
364 if self.getNumCells()[0] > 0:
365 return ("PatchInfo(index=%s, innerBBox=%s, outerBBox=%s, cellInnerDimensions=%s, "
366 "cellBorder=%s, numCellsPerPatchInner=%s)") % \
367 (self.getIndex(), self.getInnerBBox(), self.getOuterBBox(),
368 self.getCellInnerDimensions(), self.getCellBorder(),
369 self.getNumCells()[0])
370 else:
371 return "PatchInfo(index=%s, innerBBox=%s, outerBBox=%s)" % \
372 (self.getIndex(), self.getInnerBBox(), self.getOuterBBox())
◆ __str__()
| lsst.skymap.patchInfo.PatchInfo.__str__ | ( | self | ) |
Definition at line 360 of file patchInfo.py.
360 def __str__(self):
361 return "PatchInfo(index=%s)" % (self.getIndex(),)
362
◆ getCellBorder()
| lsst.skymap.patchInfo.PatchInfo.getCellBorder | ( | self | ) |
Definition at line 203 of file patchInfo.py.
203 def getCellBorder(self):
204 return self._cellBorder
205
◆ getCellIndexPair()
| lsst.skymap.patchInfo.PatchInfo.getCellIndexPair | ( | self, | |
| sequentialIndex ) |
Convert a sequential index into an index pair.
Parameters
----------
sequentialIndex : `int`
Returns
-------
x, y : `lsst.skymap.Index2D`
Raises
------
IndexError
Raised if index is out of range.
Definition at line 313 of file patchInfo.py.
313 def getCellIndexPair(self, sequentialIndex):
314 """Convert a sequential index into an index pair.
315
316 Parameters
317 ----------
318 sequentialIndex : `int`
319
320 Returns
321 -------
322 x, y : `lsst.skymap.Index2D`
323
324 Raises
325 ------
326 IndexError
327 Raised if index is out of range.
328 """
329 if self._numCells.x == 0 or self._numCells.y == 0:
330 raise IndexError("Patch does not contain cells.")
331
332 nx, ny = self.getNumCells()
333 x = sequentialIndex % nx
334 y = sequentialIndex // nx
335 return Index2D(x=x, y=y)
336
◆ getCellInfo()
| lsst.skymap.patchInfo.PatchInfo.getCellInfo | ( | self, | |
| index ) |
Return information for the specified cell.
Parameters
----------
index : `lsst.skymap.Index2D` or `~collections.abc.Iterable` of 2 `int`
Index of cell, as `Index2D` ,or two integers,
or a sequential index as returned by getSequentialCellIndex;
negative values are not supported.
Returns
-------
result : `lsst.skymap.CellInfo`
The cell info for that index.
Raises
------
IndexError
Raised if index is out of range.
Definition at line 208 of file patchInfo.py.
208 def getCellInfo(self, index):
209 """Return information for the specified cell.
210
211 Parameters
212 ----------
213 index : `lsst.skymap.Index2D` or `~collections.abc.Iterable` of 2 `int`
214 Index of cell, as `Index2D` ,or two integers,
215 or a sequential index as returned by getSequentialCellIndex;
216 negative values are not supported.
217
218 Returns
219 -------
220 result : `lsst.skymap.CellInfo`
221 The cell info for that index.
222
223 Raises
224 ------
225 IndexError
226 Raised if index is out of range.
227 """
228 if self._numCells.x == 0 or self._numCells.y == 0:
229 raise IndexError("Patch does not contain cells.")
230 if isinstance(index, Index2D):
231 _index = index
232 else:
233 if isinstance(index, numbers.Number):
234 _index = self.getCellIndexPair(index)
235 else:
236 _index = Index2D(*index)
237 if (not 0 <= _index.x < self._numCells.x) \
238 or (not 0 <= _index.y < self._numCells.y):
239 raise IndexError("Cell index %s is not in range [0-%d, 0-%d]" %
240 (_index, self._numCells.x - 1, self._numCells.y - 1))
241 # We offset the index by numCellsInPatchBorder because the cells
242 # start outside the inner dimensions.
243 # The cells are defined relative to the patch bounding box (within the
244 # tract).
245 patchInnerBBox = self.getInnerBBox()
246 innerMin = Point2I(*[(_index[i] - self._numCellsInPatchBorder)*self._cellInnerDimensions[i]
247 + patchInnerBBox.getBegin()[i]
248 for i in range(2)])
249
250 innerBBox = Box2I(innerMin, self._cellInnerDimensions)
251 outerBBox = Box2I(innerBBox)
252 outerBBox.grow(self._cellBorder)
253
254 return CellInfo(
255 index=_index,
256 innerBBox=innerBBox,
257 outerBBox=outerBBox,
258 sequentialIndex=self.getSequentialCellIndexFromPair(_index),
259 tractWcs=self._wcs
260 )
261
◆ getCellInnerDimensions()
| lsst.skymap.patchInfo.PatchInfo.getCellInnerDimensions | ( | self | ) |
Get dimensions of inner region of the cells (all are the same)
Definition at line 262 of file patchInfo.py.
262 def getCellInnerDimensions(self):
263 """Get dimensions of inner region of the cells (all are the same)
264 """
265 return self._cellInnerDimensions
266
◆ getIndex()
| lsst.skymap.patchInfo.PatchInfo.getIndex | ( | self | ) |
Return patch index: a tuple of (x, y)
Returns
-------
result : `lsst.skymap.Index2D`
Patch index (x, y).
Definition at line 89 of file patchInfo.py.
89 def getIndex(self):
90 """Return patch index: a tuple of (x, y)
91
92 Returns
93 -------
94 result : `lsst.skymap.Index2D`
95 Patch index (x, y).
96 """
97 return self._index
98
◆ getInnerBBox()
| lsst.skymap.patchInfo.PatchInfo.getInnerBBox | ( | self | ) |
Get inner bounding box.
Returns
-------
bbox : `lsst.geom.Box2I`
The inner bounding Box.
Definition at line 125 of file patchInfo.py.
125 def getInnerBBox(self):
126 """Get inner bounding box.
127
128 Returns
129 -------
130 bbox : `lsst.geom.Box2I`
131 The inner bounding Box.
132 """
133 return self._innerBBox
134
◆ getInnerSkyPolygon()
| lsst.skymap.patchInfo.PatchInfo.getInnerSkyPolygon | ( | self, | |
| tractWcs = None ) |
Get the inner on-sky region.
Parameters
----------
tractWcs : `lsst.afw.image.SkyWcs`, optional
WCS for the associated tract.
Returns
-------
result : `lsst.sphgeom.ConvexPolygon`
The inner sky region.
Definition at line 149 of file patchInfo.py.
149 def getInnerSkyPolygon(self, tractWcs=None):
150 """Get the inner on-sky region.
151
152 Parameters
153 ----------
154 tractWcs : `lsst.afw.image.SkyWcs`, optional
155 WCS for the associated tract.
156
157 Returns
158 -------
159 result : `lsst.sphgeom.ConvexPolygon`
160 The inner sky region.
161 """
162 _tractWcs = tractWcs if tractWcs is not None else self._wcs
163 return makeSkyPolygonFromBBox(bbox=self.getInnerBBox(), wcs=_tractWcs)
164
◆ getNumCells()
| lsst.skymap.patchInfo.PatchInfo.getNumCells | ( | self | ) |
Get the number of cells in x, y.
May return (0, 0) if no cells are defined.
Returns
-------
result : `lsst.skymap.Index2D`
The number of cells in x, y.
Definition at line 189 of file patchInfo.py.
189 def getNumCells(self):
190 """Get the number of cells in x, y.
191
192 May return (0, 0) if no cells are defined.
193
194 Returns
195 -------
196 result : `lsst.skymap.Index2D`
197 The number of cells in x, y.
198 """
199 return self._numCells
200
◆ getOuterBBox()
| lsst.skymap.patchInfo.PatchInfo.getOuterBBox | ( | self | ) |
Get outer bounding box.
Returns
-------
bbox : `lsst.geom.Box2I`
The outer bounding Box.
Definition at line 137 of file patchInfo.py.
137 def getOuterBBox(self):
138 """Get outer bounding box.
139
140 Returns
141 -------
142 bbox : `lsst.geom.Box2I`
143 The outer bounding Box.
144 """
145 return self._outerBBox
146
◆ getOuterSkyPolygon()
| lsst.skymap.patchInfo.PatchInfo.getOuterSkyPolygon | ( | self, | |
| tractWcs = None ) |
Get the outer on-sky region.
Parameters
----------
tractWcs : `lsst.afw.image.SkyWcs`, optional
WCS for the associated tract.
Returns
-------
result : `lsst.sphgeom.ConvexPolygon`
The outer sky region.
Definition at line 169 of file patchInfo.py.
169 def getOuterSkyPolygon(self, tractWcs=None):
170 """Get the outer on-sky region.
171
172 Parameters
173 ----------
174 tractWcs : `lsst.afw.image.SkyWcs`, optional
175 WCS for the associated tract.
176
177 Returns
178 -------
179 result : `lsst.sphgeom.ConvexPolygon`
180 The outer sky region.
181 """
182 _tractWcs = tractWcs if tractWcs is not None else self._wcs
183 return makeSkyPolygonFromBBox(bbox=self.getOuterBBox(), wcs=_tractWcs)
184
◆ getSequentialCellIndex()
| lsst.skymap.patchInfo.PatchInfo.getSequentialCellIndex | ( | self, | |
| cellInfo ) |
Return a single integer that uniquely identifies
the given cell within this patch.
Parameters
----------
cellInfo : `lsst.skymap.CellInfo`
Returns
-------
sequentialIndex : `int`
Raises
------
IndexError
Raised if index is out of range.
Definition at line 269 of file patchInfo.py.
269 def getSequentialCellIndex(self, cellInfo):
270 """Return a single integer that uniquely identifies
271 the given cell within this patch.
272
273 Parameters
274 ----------
275 cellInfo : `lsst.skymap.CellInfo`
276
277 Returns
278 -------
279 sequentialIndex : `int`
280
281 Raises
282 ------
283 IndexError
284 Raised if index is out of range.
285 """
286 index = cellInfo.getIndex()
287 return self.getSequentialCellIndexFromPair(index)
288
◆ getSequentialCellIndexFromPair()
| lsst.skymap.patchInfo.PatchInfo.getSequentialCellIndexFromPair | ( | self, | |
| index ) |
Return a single integer that uniquely identifies
the given cell within this patch.
Parameters
----------
index : `lsst.skymap.Index2D`
Returns
-------
sequentialIndex : `int`
Raises
------
IndexError
Raised if index is out of range.
Definition at line 289 of file patchInfo.py.
289 def getSequentialCellIndexFromPair(self, index):
290 """Return a single integer that uniquely identifies
291 the given cell within this patch.
292
293 Parameters
294 ----------
295 index : `lsst.skymap.Index2D`
296
297 Returns
298 -------
299 sequentialIndex : `int`
300
301 Raises
302 ------
303 IndexError
304 Raised if index is out of range.
305 """
306 if isinstance(index, Index2D):
307 _index = index
308 else:
309 _index = Index2D(*index)
310 nx, ny = self.getNumCells()
311 return nx*_index.y + _index.x
312
◆ getSequentialIndex()
| lsst.skymap.patchInfo.PatchInfo.getSequentialIndex | ( | self | ) |
Return patch sequential index.
Returns
-------
result : `int`
Sequential patch index.
Definition at line 101 of file patchInfo.py.
101 def getSequentialIndex(self):
102 """Return patch sequential index.
103
104 Returns
105 -------
106 result : `int`
107 Sequential patch index.
108 """
109 return self._sequentialIndex
110
◆ getWcs()
| lsst.skymap.patchInfo.PatchInfo.getWcs | ( | self | ) |
Return the associated tract wcs
Returns
-------
wcs : `lsst.afw.geom.SkyWcs`
Tract WCS.
Definition at line 113 of file patchInfo.py.
113 def getWcs(self):
114 """Return the associated tract wcs
115
116 Returns
117 -------
118 wcs : `lsst.afw.geom.SkyWcs`
119 Tract WCS.
120 """
121 return self._wcs
122
◆ inner_sky_polygon()
| lsst.skymap.patchInfo.PatchInfo.inner_sky_polygon | ( | self | ) |
Definition at line 166 of file patchInfo.py.
166 def inner_sky_polygon(self):
167 return self.getInnerSkyPolygon()
168
◆ outer_sky_polygon()
| lsst.skymap.patchInfo.PatchInfo.outer_sky_polygon | ( | self | ) |
Definition at line 186 of file patchInfo.py.
186 def outer_sky_polygon(self):
187 return self.getOuterSkyPolygon()
188
Member Data Documentation
◆ _cellBorder
|
protected |
Definition at line 80 of file patchInfo.py.
◆ _cellInnerDimensions
|
protected |
Definition at line 79 of file patchInfo.py.
◆ _index
|
protected |
Definition at line 68 of file patchInfo.py.
◆ _innerBBox
|
protected |
Definition at line 70 of file patchInfo.py.
◆ _numCells
|
protected |
Definition at line 83 of file patchInfo.py.
◆ _numCellsInPatchBorder
|
protected |
Definition at line 81 of file patchInfo.py.
◆ _outerBBox
|
protected |
Definition at line 71 of file patchInfo.py.
◆ _sequentialIndex
|
protected |
Definition at line 69 of file patchInfo.py.
◆ _wcs
|
protected |
Definition at line 72 of file patchInfo.py.
Property Documentation
◆ cell_border
|
static |
Definition at line 206 of file patchInfo.py.
◆ cell_inner_dimensions
|
static |
Definition at line 267 of file patchInfo.py.
◆ index
|
static |
Definition at line 99 of file patchInfo.py.
◆ inner_bbox
|
static |
Definition at line 135 of file patchInfo.py.
◆ num_cells
|
static |
Definition at line 201 of file patchInfo.py.
◆ outer_bbox
|
static |
Definition at line 147 of file patchInfo.py.
◆ sequential_index
|
static |
Definition at line 111 of file patchInfo.py.
◆ wcs
|
static |
Definition at line 123 of file patchInfo.py.
The documentation for this class was generated from the following file:
- /j/snowflake/release/lsstsw/stack/lsst-scipipe-12.0.0/Linux/skymap/g1fd858c14a+fde7a7a78c/python/lsst/skymap/patchInfo.py
Generated on Sun Oct 26 2025 07:01:57 for LSST Applications by
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