LSSTApplications
17.0+11,17.0+34,17.0+56,17.0+57,17.0+59,17.0+7,17.0-1-g377950a+33,17.0.1-1-g114240f+2,17.0.1-1-g4d4fbc4+28,17.0.1-1-g55520dc+49,17.0.1-1-g5f4ed7e+52,17.0.1-1-g6dd7d69+17,17.0.1-1-g8de6c91+11,17.0.1-1-gb9095d2+7,17.0.1-1-ge9fec5e+5,17.0.1-1-gf4e0155+55,17.0.1-1-gfc65f5f+50,17.0.1-1-gfc6fb1f+20,17.0.1-10-g87f9f3f+1,17.0.1-11-ge9de802+16,17.0.1-16-ga14f7d5c+4,17.0.1-17-gc79d625+1,17.0.1-17-gdae4c4a+8,17.0.1-2-g26618f5+29,17.0.1-2-g54f2ebc+9,17.0.1-2-gf403422+1,17.0.1-20-g2ca2f74+6,17.0.1-23-gf3eadeb7+1,17.0.1-3-g7e86b59+39,17.0.1-3-gb5ca14a,17.0.1-3-gd08d533+40,17.0.1-30-g596af8797,17.0.1-4-g59d126d+4,17.0.1-4-gc69c472+5,17.0.1-6-g5afd9b9+4,17.0.1-7-g35889ee+1,17.0.1-7-gc7c8782+18,17.0.1-9-gc4bbfb2+3,w.2019.22
LSSTDataManagementBasePackage
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Classes | |
class | _MockTestCase |
Functions | |
def | approximateWcs (wcs, bbox, order=3, nx=20, ny=20, iterations=3, skyTolerance=0.001 *lsst.geom.arcseconds, pixelTolerance=0.02, useTanWcs=False) |
def lsst.meas.astrom.approximateWcs.approximateWcs | ( | wcs, | |
bbox, | |||
order = 3 , |
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nx = 20 , |
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ny = 20 , |
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iterations = 3 , |
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skyTolerance = 0.001*lsst.geom.arcseconds , |
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pixelTolerance = 0.02 , |
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useTanWcs = False |
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) |
Approximate an existing WCS as a TAN-SIP WCS The fit is performed by evaluating the WCS at a uniform grid of points within a bounding box. Parameters ---------- wcs : `lsst.afw.geom.SkyWcs` wcs to approximate bbox : `lsst.geom.Box2I` the region over which the WCS will be fit order : `int` order of SIP fit nx : `int` number of grid points along x ny : `int` number of grid points along y iterations : `int` number of times to iterate over fitting skyTolerance : `lsst.geom.Angle` maximum allowed difference in world coordinates between input wcs and approximate wcs (default is 0.001 arcsec) pixelTolerance : `float` maximum allowed difference in pixel coordinates between input wcs and approximate wcs (default is 0.02 pixels) useTanWcs : `bool` send a TAN version of wcs to the fitter? It is documented to require that, but I don't think the fitter actually cares Returns ------- fitWcs : `lsst.afw.geom.SkyWcs` the fit TAN-SIP WCS
Definition at line 44 of file approximateWcs.py.