ring2z
Find HEALPix ring number corresponding to a given z coordinate
Contents
Syntax
z = ring2z(nSide,nRing)
Input Arguments
nSide HEALPix resolution parameter nRing numeric array of ring numbers (in range [1,4*nSide-1])
Return Arguments
z size(nRing) numeric array of pixel center z coordinates
Example
nRing = reshape(1:15,3,5) z = ring2z(4,nRing)
nRing = 1 4 7 10 13 2 5 8 11 14 3 6 9 12 15 z = 0.9792 0.6667 0.1667 -0.3333 -0.8125 0.9167 0.5000 0 -0.5000 -0.9167 0.8125 0.3333 -0.1667 -0.6667 -0.9792
See also
z2ring
Copyright 2010-2011 Lee Samuel Finn. Terms of Use.