LSSTApplications
17.0+124,17.0+14,17.0+73,18.0.0+37,18.0.0+80,18.0.0-4-g68ffd23+4,18.1.0-1-g0001055+12,18.1.0-1-g03d53ef+5,18.1.0-1-g1349e88+55,18.1.0-1-g2505f39+44,18.1.0-1-g5315e5e+4,18.1.0-1-g5e4b7ea+14,18.1.0-1-g7e8fceb+4,18.1.0-1-g85f8cd4+48,18.1.0-1-g8ff0b9f+4,18.1.0-1-ga2c679d+1,18.1.0-1-gd55f500+35,18.1.0-10-gb58edde+2,18.1.0-11-g0997b02+4,18.1.0-13-gfe4edf0b+12,18.1.0-14-g259bd21+21,18.1.0-19-gdb69f3f+2,18.1.0-2-g5f9922c+24,18.1.0-2-gd3b74e5+11,18.1.0-2-gfbf3545+32,18.1.0-26-g728bddb4+5,18.1.0-27-g6ff7ca9+2,18.1.0-3-g52aa583+25,18.1.0-3-g8ea57af+9,18.1.0-3-gb69f684+42,18.1.0-3-gfcaddf3+6,18.1.0-32-gd8786685a,18.1.0-4-gf3f9b77+6,18.1.0-5-g1dd662b+2,18.1.0-5-g6dbcb01+41,18.1.0-6-gae77429+3,18.1.0-7-g9d75d83+9,18.1.0-7-gae09a6d+30,18.1.0-9-gc381ef5+4,w.2019.45
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.