lsst.skymap.healpixSkyMap Namespace Reference

Classes
class	DummyHealpy
class	HealpixTractInfo
class	HealpixSkyMapConfig
class	HealpixSkyMap

Functions
def	angToCoord (thetaphi)
def	coordToAng (coord)

Variables
	healpy

Function Documentation

angToCoord()

def lsst.skymap.healpixSkyMap.angToCoord

(

thetaphi

)

Convert healpy's ang to an lsst.geom.SpherePoint

The ang is provided as a single object, thetaphi, so the output
of healpy functions can be directed to this function without
additional translation.

Definition at line 48 of file healpixSkyMap.py.

def angToCoord(thetaphi):
    """Convert healpy's ang to an lsst.geom.SpherePoint
 
    The ang is provided as a single object, thetaphi, so the output
    of healpy functions can be directed to this function without
    additional translation.
    """
    return geom.SpherePoint(float(thetaphi[1]), float(thetaphi[0] - 0.5*numpy.pi), geom.radians)
 
 

coordToAng()

def lsst.skymap.healpixSkyMap.coordToAng

(

coord

)

Convert an lsst.geom.SpherePoint to a healpy ang (theta, phi)

The Healpix convention is that 0 <= theta <= pi, 0 <= phi < 2pi.

Definition at line 58 of file healpixSkyMap.py.

def coordToAng(coord):
    """Convert an lsst.geom.SpherePoint to a healpy ang (theta, phi)
 
    The Healpix convention is that 0 <= theta <= pi, 0 <= phi < 2pi.
    """
    return (coord.getLatitude().asRadians() + 0.5*numpy.pi, coord.getLongitude().asRadians())
 
 

Variable Documentation

healpy

lsst.skymap.healpixSkyMap.healpy

Definition at line 40 of file healpixSkyMap.py.