[SciPy-Dev] Spherical harmonics, convention
Matthew Brett
matthew.brett@gmail....
Fri Mar 19 12:50:22 CDT 2010
Hi,
I noticed that scipy.special.sph_harm uses conventions that (on
superficial reading) seem to be rather unusual; can I ask for advice
whether that is correct?
For example; http://en.wikipedia.org/wiki/Spherical_harmonics assumes:
theta = polar angle
phi = azimuthal angle
l (little L) = degree of harmonic
but we have:
theta = azimuthal angle
phi = polar angle
n = degree of harmonic
I realize that the theta / phi switch is the difference between
physics and math conventions of spherical coordinates, but my
superficial impression was that there was a rather strong tradition in
spherical harmonics to prefer theta = polar, phi = azimuthal; is that
correct?
Thanks a lot,
Matthew
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