LSSTApplications
19.0.0-14-gb0260a2+72efe9b372,20.0.0+7927753e06,20.0.0+8829bf0056,20.0.0+995114c5d2,20.0.0+b6f4b2abd1,20.0.0+bddc4f4cbe,20.0.0-1-g253301a+8829bf0056,20.0.0-1-g2b7511a+0d71a2d77f,20.0.0-1-g5b95a8c+7461dd0434,20.0.0-12-g321c96ea+23efe4bbff,20.0.0-16-gfab17e72e+fdf35455f6,20.0.0-2-g0070d88+ba3ffc8f0b,20.0.0-2-g4dae9ad+ee58a624b3,20.0.0-2-g61b8584+5d3db074ba,20.0.0-2-gb780d76+d529cf1a41,20.0.0-2-ged6426c+226a441f5f,20.0.0-2-gf072044+8829bf0056,20.0.0-2-gf1f7952+ee58a624b3,20.0.0-20-geae50cf+e37fec0aee,20.0.0-25-g3dcad98+544a109665,20.0.0-25-g5eafb0f+ee58a624b3,20.0.0-27-g64178ef+f1f297b00a,20.0.0-3-g4cc78c6+e0676b0dc8,20.0.0-3-g8f21e14+4fd2c12c9a,20.0.0-3-gbd60e8c+187b78b4b8,20.0.0-3-gbecbe05+48431fa087,20.0.0-38-ge4adf513+a12e1f8e37,20.0.0-4-g97dc21a+544a109665,20.0.0-4-gb4befbc+087873070b,20.0.0-4-gf910f65+5d3db074ba,20.0.0-5-gdfe0fee+199202a608,20.0.0-5-gfbfe500+d529cf1a41,20.0.0-6-g64f541c+d529cf1a41,20.0.0-6-g9a5b7a1+a1cd37312e,20.0.0-68-ga3f3dda+5fca18c6a4,20.0.0-9-g4aef684+e18322736b,w.2020.45
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 43 of file approximateWcs.py.