Classes | |
class | QuadSpherePixelization |
Functions | |
def | createQuadSpherePixelization |
def | imageToPolygon |
def lsst.skypix.quadsphere.createQuadSpherePixelization | ( | policy = None | ) |
Definition at line 773 of file quadsphere.py.
def lsst.skypix.quadsphere.imageToPolygon | ( | wcs, | |
widthPix, | |||
heightPix, | |||
padRad = 0.0 |
|||
) |
Computes and returns a spherical convex polygon approximation to the region of the unit sphere covered by an image specified with a WCS and a width/height (pixels). The polygon is computed by connecting the world coordinates of the 4 image corners with great circles, and can optionally be padded by padRad radians.
Definition at line 787 of file quadsphere.py.