lsst.skymap
15.0
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Public Member Functions | |
def | __init__ (self, config, version=0) |
def | getRingIndices (self, index) |
def | generateTract (self, index) |
def | findTract (self, coord) |
def | findAllTracts (self, coord) |
def | findTractPatchList (self, coordList) |
def | updateSha1 (self, sha1) |
def | __reduce__ (self) |
def | __iter__ (self) |
def | __len__ (self) |
def | __getitem__ (self, index) |
def | findClosestTractPatchList (self, coordList) |
def | __hash__ (self) |
def | __eq__ (self, other) |
def | __ne__ (self, other) |
def | getSha1 (self) |
Public Attributes | |
config | |
Static Public Attributes | |
ConfigClass = RingsSkyMapConfig | |
Rings sky map pixelization. We divide the sphere into N rings of Declination, plus the two polar caps, which sets the size of the individual tracts. The rings are divided in RA into an integral number of tracts of this size; this division is made at the Declination closest to zero so as to ensure full overlap.
Definition at line 43 of file ringsSkyMap.py.
def lsst.skymap.ringsSkyMap.RingsSkyMap.__init__ | ( | self, | |
config, | |||
version = 0 |
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) |
Constructor @param[in] config: an instance of self.ConfigClass; if None the default config is used @param[in] version: software version of this class, to retain compatibility with old instances
Definition at line 55 of file ringsSkyMap.py.
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inherited |
Definition at line 176 of file baseSkyMap.py.
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inherited |
Get the TractInfo for a particular index The tract is returned from a cache, if available, otherwise generated on the fly.
Definition at line 67 of file cachingSkyMap.py.
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inherited |
Definition at line 173 of file baseSkyMap.py.
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inherited |
Iterator over tracts
Definition at line 58 of file cachingSkyMap.py.
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inherited |
Length is number of tracts
Definition at line 63 of file cachingSkyMap.py.
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inherited |
Definition at line 182 of file baseSkyMap.py.
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inherited |
To support pickling Warning: This method assumes that the constructor should be defined: __init__(self, config, version=defaultVersion) The use of 'config' is effectively set by the registry mechanism. If additional optional arguments are added, this method should be overridden to correspond.
Definition at line 47 of file cachingSkyMap.py.
def lsst.skymap.ringsSkyMap.RingsSkyMap.findAllTracts | ( | self, | |
coord | |||
) |
Find all tracts which include the specified coord. @param[in] coord: sky coordinate (afwCoord.Coord) @return List of TractInfo of tracts which include the specified coord @note - This routine will be more efficient if coord is ICRS.
Definition at line 147 of file ringsSkyMap.py.
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inherited |
Find closest tract and patches that overlap coordinates @param[in] coordList: list of sky coordinates (afwCoord.Coord) @return list of (TractInfo, list of PatchInfo) for tracts and patches that contain, or may contain, the specified region. The list will be empty if there is no overlap.
Definition at line 149 of file baseSkyMap.py.
def lsst.skymap.ringsSkyMap.RingsSkyMap.findTract | ( | self, | |
coord | |||
) |
Find the tract whose center is nearest the specified coord. @param[in] coord: sky coordinate (afwCoord.Coord) @return TractInfo of tract whose center is nearest the specified coord @warning: - if tracts do not cover the whole sky then the returned tract may not include the coord @note - This routine will be more efficient if coord is ICRS. - If coord is equidistant between multiple sky tract centers then one is arbitrarily chosen. - The default implementation is not very efficient; subclasses may wish to override.
Definition at line 111 of file ringsSkyMap.py.
def lsst.skymap.ringsSkyMap.RingsSkyMap.findTractPatchList | ( | self, | |
coordList | |||
) |
Find tracts and patches that overlap a region @param[in] coordList: list of sky coordinates (afwCoord.Coord) @return list of (TractInfo, list of PatchInfo) for tracts and patches that contain, or may contain, the specified region. The list will be empty if there is no overlap. @warning this uses a naive algorithm that may find some tracts and patches that do not overlap the region (especially if the region is not a rectangle aligned along patch x,y).
Definition at line 197 of file ringsSkyMap.py.
def lsst.skymap.ringsSkyMap.RingsSkyMap.generateTract | ( | self, | |
index | |||
) |
Generate the TractInfo for this index
Definition at line 94 of file ringsSkyMap.py.
def lsst.skymap.ringsSkyMap.RingsSkyMap.getRingIndices | ( | self, | |
index | |||
) |
Calculate ring indices given a numerical index of a tract The ring indices are the ring number and the tract number within the ring. The ring number is -1 for the south polar cap and increases to the north. The north polar cap has ring number = numRings. The tract number is zero for either of the polar caps.
Definition at line 73 of file ringsSkyMap.py.
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inherited |
Return a SHA1 hash that uniquely identifies this SkyMap instance. Returns ------- sha1 : bytes A 20-byte hash that uniquely identifies this SkyMap instance. Subclasses should almost always override `updateSha1()` instead of this function to add subclass-specific state to the hash.
Definition at line 185 of file baseSkyMap.py.
def lsst.skymap.ringsSkyMap.RingsSkyMap.updateSha1 | ( | self, | |
sha1 | |||
) |
Add subclass-specific state or configuration options to the SHA1.
Definition at line 215 of file ringsSkyMap.py.
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inherited |
Definition at line 101 of file baseSkyMap.py.
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static |
Definition at line 52 of file ringsSkyMap.py.