LSSTApplications  18.1.0
LSSTDataManagementBasePackage
Classes | Functions
lsst.skymap.patchInfo Namespace Reference

Classes

class  PatchInfo
 

Functions

def makeSkyPolygonFromBBox (bbox, wcs)
 

Function Documentation

◆ makeSkyPolygonFromBBox()

def lsst.skymap.patchInfo.makeSkyPolygonFromBBox (   bbox,
  wcs 
)
Make an on-sky polygon from a bbox and a SkyWcs

Parameters
----------
bbox : `lsst.geom.Box2I` or `lsst.geom.Box2D`
    Bounding box of region, in pixel coordinates
wcs : `lsst.afw.geom.SkyWcs`
    Celestial WCS

Returns
-------
polygon : `lsst.sphgeom.ConvexPolygon`
    On-sky region

Definition at line 29 of file patchInfo.py.

29 def makeSkyPolygonFromBBox(bbox, wcs):
30  """Make an on-sky polygon from a bbox and a SkyWcs
31 
32  Parameters
33  ----------
34  bbox : `lsst.geom.Box2I` or `lsst.geom.Box2D`
35  Bounding box of region, in pixel coordinates
36  wcs : `lsst.afw.geom.SkyWcs`
37  Celestial WCS
38 
39  Returns
40  -------
41  polygon : `lsst.sphgeom.ConvexPolygon`
42  On-sky region
43  """
44  pixelPoints = Box2D(bbox).getCorners()
45  skyPoints = wcs.pixelToSky(pixelPoints)
46  return ConvexPolygon.convexHull([sp.getVector() for sp in skyPoints])
47 
48 
def makeSkyPolygonFromBBox(bbox, wcs)
Definition: patchInfo.py:29