alm2pix

Evaluate function, expressed as spherical harmonic expansion coefficients, on HEALPix pixel centers

Contents

Syntax
Input Arguments
Return Arguments
Example
See also
Requires

Syntax

v = alm2pix( nSide, alm, 'Param1', Value1, 'Param2', Value2, ...)

Input Arguments

nSide HEALPix resolution parameter (power of 2) alm Spherical harmonic expansion coefficients

Param Value 'lmax' max order of harmonic to calculate (default floor2*nSide/3) 'nest' (true | {false})

Return Arguments

v       Function values at pixels in either ring or nest indexing

Example

Shows the gibbs-like error at the poles

nSide = 2^4;
alm = pix2alm(ones(1,12*nSide^2));
v = alm2pix(nSide,alm);
hp3d(v-1);

See also

pix2alm

Requires

ylm

Copyright 2010-2011 Lee Samuel Finn. Terms of Use.