z2ring
Return HEALPix ring number for a given z
Contents
Syntax
zNum = z2ring(nSide,z)
Input Arguments
nSide HEALPix resolution parameter z numeric array of z values
Return Arguments
nRing size(z) numeric array of ring numbers
Description
HEALPix pixels centers are arranged in rings of constant z. Each ring spans a given range of z. z2ring returns the ring numbers that cover the input z values.
Example
nSide = 4; zNum = z2ring(nSide,reshape((-7:7)*2/15,3,5))
zNum =
14 11 9 6 4
13 10 8 6 3
12 10 7 5 2
See also
ring2z
Copyright 2010-2011 Lee Samuel Finn. Terms of Use.