LSST Applications 27.0.0,g0265f82a02+469cd937ee,g02d81e74bb+21ad69e7e1,g1470d8bcf6+cbe83ee85a,g2079a07aa2+e67c6346a6,g212a7c68fe+04a9158687,g2305ad1205+94392ce272,g295015adf3+81dd352a9d,g2bbee38e9b+469cd937ee,g337abbeb29+469cd937ee,g3939d97d7f+72a9f7b576,g487adcacf7+71499e7cba,g50ff169b8f+5929b3527e,g52b1c1532d+a6fc98d2e7,g591dd9f2cf+df404f777f,g5a732f18d5+be83d3ecdb,g64a986408d+21ad69e7e1,g858d7b2824+21ad69e7e1,g8a8a8dda67+a6fc98d2e7,g99cad8db69+f62e5b0af5,g9ddcbc5298+d4bad12328,ga1e77700b3+9c366c4306,ga8c6da7877+71e4819109,gb0e22166c9+25ba2f69a1,gb6a65358fc+469cd937ee,gbb8dafda3b+69d3c0e320,gc07e1c2157+a98bf949bb,gc120e1dc64+615ec43309,gc28159a63d+469cd937ee,gcf0d15dbbd+72a9f7b576,gdaeeff99f8+a38ce5ea23,ge6526c86ff+3a7c1ac5f1,ge79ae78c31+469cd937ee,gee10cc3b42+a6fc98d2e7,gf1cff7945b+21ad69e7e1,gfbcc870c63+9a11dc8c8f
LSST Data Management Base Package
|
Functions | |
getSipMatrixFromMetadata (metadata, name) | |
computePixelToDistortedPixel (pixelToFocalPlane, focalPlaneToFieldAngle) | |
lsst.afw.geom.wcsUtils.computePixelToDistortedPixel | ( | pixelToFocalPlane, | |
focalPlaneToFieldAngle ) |
Compute the transform ``pixelToDistortedPixel``, which applies optical distortion specified by ``focalPlaneToFieldAngle``. The resulting transform is designed to be used to convert a pure TAN WCS to a WCS that includes a model for optical distortion. In detail, the initial WCS will contain these frames and transforms:: PIXELS frame -> pixelToIwc -> IWC frame -> gridToIwc -> SkyFrame To produce the WCS with distortion, replace ``pixelToIwc`` with:: pixelToDistortedPixel -> pixelToIwc Parameters ---------- pixelToFocalPlane : `lsst.afw.geom.TransformPoint2ToPoint2` Transform parent pixel coordinates to focal plane coordinates focalPlaneToFieldAngle : `lsst.afw.geom.TransformPoint2ToPoint2` Transform focal plane coordinates to field angle coordinates Returns ------- pixelToDistortedPixel : `lsst.afw.geom.TransformPoint2ToPoint2` A transform that applies the effect of the optical distortion model.
Definition at line 65 of file wcsUtils.py.
lsst.afw.geom.wcsUtils.getSipMatrixFromMetadata | ( | metadata, | |
name ) |
Extract a SIP matrix from FITS TAN-SIP WCS metadata. Omitted coefficients are set to 0 and all coefficients may be omitted. Parameters ---------- metadata : `lsst.daf.base.PropertySet` FITS metadata. name : `str` Name of TAN-SIP matrix (``"A"``, ``"B"``, ``"Ap"``, or ``"Bp"``). Returns ------- `numpy.array` The SIP matrix. Raises ------ TypeError If the order keyword ``<name>_ORDER`` (e.g. ``AP_ORDER``) is not found, the value of the order keyword cannot be read as an integer, the value of the order keyword is negative, or if a matrix parameter (e.g. ``AP_5_0``) cannot be read as a float.
Definition at line 34 of file wcsUtils.py.