Plot Intensity on Sphere

Plot intensity (color) for given points on a sphere.

PlotSphereIntensity(azimuth, elevation)
PlotSphereIntensity(azimuth, elevation, intensity)
h = PlotSphereIntensity(...)

Plots the intensity (as color) of a number of points on a unit sphere.

Input:
azimuth (phi), in degrees
elevation (theta), in degrees
intensity (optional, if not provided, a green sphere is produced)

All inputs must be vectors or matrices of the same size. Data does not have to be evenly spaced. When there aren't enough points to draw a smooth sphere, additional points (with color) are interpolated.

Output:
h - a handle to the patch object

The axes are also plotted:
positive x axis is red
positive y axis is green
positive z axis is blue