CellTractBuilder¶
- class lsst.skymap.CellTractBuilder(config)¶
Bases:
BaseTractBuilder
Methods Summary
getPackedConfig
(config)Get a packed config suitable for using in a sha1.
getPatchIndexPair
(sequentialIndex)Convert sequential index into patch index (x,y) pair.
getPatchInfo
(index, tractWcs)Return information for the specified patch.
Get dimensions of inner region of the patches (all are the same)
getSequentialPatchIndex
(patchInfo)Return a single integer that uniquely identifies the given patch within this tract.
Return a single integer that uniquely identifies the patch index within the tract.
setupPatches
(minBBox, wcs)Set up the patches of a particular size in a tract.
Methods Documentation
- getPackedConfig(config)¶
Get a packed config suitable for using in a sha1.
- Parameters:
- Returns:
- configPacked
bytes
- configPacked
- getPatchBorder()¶
- getPatchIndexPair(sequentialIndex)¶
Convert sequential index into patch index (x,y) pair.
- Parameters:
- sequentialIndex
int
- sequentialIndex
- Returns:
- getPatchInfo(index, tractWcs)¶
Return information for the specified patch.
- Parameters:
- index
lsst.skymap.Index2D
orIterable
of 2int
Index of patch, as Index2D or pair of ints; or a sequential index as returned by getSequentialPatchIndex; negative values are not supported.
- tractWcs
lsst.afw.geom.SkyWcs
WCS associated with the tract.
- index
- Returns:
- result
lsst.skymap.PatchInfo
The patch info for that index.
- result
- Raises:
- IndexError
Raised if index is out of range.
- getPatchInnerDimensions()¶
Get dimensions of inner region of the patches (all are the same)
- getSequentialPatchIndex(patchInfo)¶
Return a single integer that uniquely identifies the given patch within this tract.
- Parameters:
- patchInfo
lsst.skymap.PatchInfo
- patchInfo
- Returns:
- sequentialIndex
int
- sequentialIndex
- getSequentialPatchIndexFromPair(index)¶
Return a single integer that uniquely identifies the patch index within the tract.
- Parameters:
- index
lsst.skymap.Index2D
orIterable
of 2int
- index
- Returns:
- sequentialIndex
int
- sequentialIndex
- setupPatches(minBBox, wcs)¶
Set up the patches of a particular size in a tract.
We grow the tract bounding box to hold an exact multiple of the desired size (patchInnerDimensions or numCellsPerPatchInner*cellInnerDimensions), while keeping the center roughly the same. We return the final tract bounding box, and the number of patches in each dimension (as an Index2D).
- Parameters:
- minBBox
lsst.geom.Box2I
Minimum bounding box for tract.
- wcs
lsst.afw.geom.SkyWcs
Wcs object.
- minBBox
- Returns:
- bbox
lsst.geom.Box2I
final bounding box, number of patches.
- numPatches
lsst.skymap.Index2D
- bbox