makeBoxWcsRegion¶
-
lsst.daf.butler.makeBoxWcsRegion(box, wcs, margin)¶ Construct a spherical ConvexPolygon from a WCS and a bounding box.
- Parameters
- box
lsst.geom.Box2Iorlsst.geom.Box2D A box in the pixel coordinate system defined by the WCS.
- wcs
lsst.afw.image.Wcs A mapping from a pixel coordinate system to the sky.
- margin
float A buffer in pixels to grow the box by (in all directions) before transforming it to sky coordinates.
- box
- Returns
- polygon
lsst.sphgeom.ConvexPolygon A convex polygon.
- polygon