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LSST Data Management Base Package
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Public Member Functions | |
__init__ (self, id, tractBuilder, ctrCoord, radius, tractOverlap, wcs, innerBoxCorners=None) | |
Protected Member Functions | |
_minimumBoundingBox (self, wcs) | |
Protected Attributes | |
_radius | |
_vertexCoordList | |
Information for a tract specified explicitly. A tract is placed at the explicitly defined coordinates, with the nominated radius. The tracts are square (i.e., the radius is really a half-size). Parameters ---------- id : : `int` tract ID tractBuilder : Subclass of `lsst.skymap.BaseTractBuilder` Object used to compute patch geometry. ctrCoord : `lsst.geom.SpherePoint` ICRS sky coordinate of center of inner region of tract; also used as the CRVAL for the WCS. radius : `lsst.geom.Angle` Radius of the tract. tractOverlap : `lsst.geom.Angle` Minimum overlap between adjacent sky tracts; this defines the minimum distance the tract extends beyond the inner region in all directions. wcs : `lsst.afw.image.SkyWcs` WCS for tract. The reference pixel will be shifted as required so that the lower left-hand pixel (index 0,0) has pixel position 0.0, 0.0. innerBoxCorners : `list` [`lsst.sphgeom.LonLat`], optional If set then the ``inner_sky_region`` will be a `lsst.sphgeom.Box` with these corners as oppsed to a `lsst.sphgeom.ConvexPolygon` built from the ``vertex_list``.
Definition at line 431 of file tractInfo.py.
lsst.skymap.tractInfo.ExplicitTractInfo.__init__ | ( | self, | |
id, | |||
tractBuilder, | |||
ctrCoord, | |||
radius, | |||
tractOverlap, | |||
wcs, | |||
innerBoxCorners = None ) |
Reimplemented from lsst.skymap.tractInfo.TractInfo.
Definition at line 459 of file tractInfo.py.
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protected |
Calculate the minimum bounding box for the tract, given the WCS, and the nominated radius.
Reimplemented from lsst.skymap.tractInfo.TractInfo.
Definition at line 479 of file tractInfo.py.
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protected |
Definition at line 463 of file tractInfo.py.
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protected |
Definition at line 477 of file tractInfo.py.