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LSST Data Management Base Package
|
Classes | |
class | MappingTestCase |
class | ObjectTestCase |
Functions | |
makePolyMapCoeffs (nIn, nOut) | |
makeTwoWayPolyMap (nIn, nOut) | |
makeForwardPolyMap (nIn, nOut) | |
astshim.test.makeForwardPolyMap | ( | nIn, | |
nOut ) |
Make an astshim.PolyMap suitable for testing The forward transform is the same as for `makeTwoWayPolyMap`. This map does not have a reverse transform. The equation is chosen for the following reasons: - It is well defined for any positive value of nIn, nOut. - It stays small for small x, to avoid wraparound of angles for SpherePoint endpoints.
Definition at line 309 of file test.py.
astshim.test.makePolyMapCoeffs | ( | nIn, | |
nOut ) |
Make an array of coefficients for astshim.PolyMap for the following equation: fj(x) = C0j x0^2 + C1j x1^2 + C2j x2^2 + ... + CNj xN^2 where: * i ranges from 0 to N=nIn-1 * j ranges from 0 to nOut-1, * Cij = 0.001 (i+j+1)
Definition at line 262 of file test.py.
astshim.test.makeTwoWayPolyMap | ( | nIn, | |
nOut ) |
Make an astshim.PolyMap suitable for testing The forward transform is as follows: fj(x) = C0j x0^2 + C1j x1^2 + C2j x2^2 + ... + CNj xN^2 where Cij = 0.001 (i+j+1) The reverse transform is the same equation with i and j reversed thus it is NOT the inverse of the forward direction, but is something that can be easily evaluated. The equation is chosen for the following reasons: - It is well defined for any positive value of nIn, nOut. - It stays small for small x, to avoid wraparound of angles for SpherePoint endpoints.
Definition at line 283 of file test.py.