pix2ang
Find spherical coordinate location of HEALPix pixels
Contents
Syntax
tp = pix2ang(nSide,pix,'Param1',Value1,...)
Input Arguments
nSide HEALPix resolution parameter (positive integer power of 2) pix (optional) array of pixel values to find coordinates of
Param Values 'nest' pixels are given in nested indexing (true | {false})
Return Arguments
tp cell array of [theta; phi] pixel locations (radians)
Example
Return [theta; phi] postion angles for all pix of nSide=4, nest scheme
nSide = 4; tp = pix2ang(nSide,'nest',true); size(tp) tp{1} % Return position angles for a random assortment of pixels pix = randi(nSide2nPix(nSide),3,4); tp = pix2ang(nSide,pix); size(tp) tp{1}
ans = 1 192 ans = 1.4033 0.7854 ans = 3 4 ans = 1.5708 6.0868
See also
See also ang2pix, pix2vec, vec2pix
Copyright 2010-2011 Lee Samuel Finn. Terms of Use.