lsst.skymap.detail.utils Namespace Reference

Classes
class	Index2D

Functions
	coordFromVec (vec, defRA=None)
	makeSkyPolygonFromBBox (bbox, wcs)

Variables
	_TinyFloat = numpy.finfo(float).tiny

Function Documentation

coordFromVec()

lsst.skymap.detail.utils.coordFromVec	(		vec,
			defRA = None )

Convert an ICRS cartesian vector to an ICRS `lsst.geom.SpherePoint`.

Parameters
----------
vec : `list` of `float`
    An ICRS catesian vector.
defRA : `lsst.geom.Angle` or None
    The RA to use if the vector is too near a pole;
    ignored if not near a pole.

Raises
------
RuntimeError
    Raised if vec too near a pole and defRA is None.

Definition at line 34 of file utils.py.

makeSkyPolygonFromBBox()

lsst.skymap.detail.utils.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 61 of file utils.py.

Variable Documentation

_TinyFloat

lsst.skymap.detail.utils._TinyFloat = numpy.finfo(float).tiny

protected

Definition at line 31 of file utils.py.