title: density plot on a sphere Python
body: <p>How to plot density map on the surface of a sphere if I have array of values corresponding to given (theta,phi) points in spherical coordinates? I have found how to construct a sphere e.g. <a href="https://qutip.googlecode.com/svn/doc/2.0.0/html/guide/guide-bloch.html" rel="nofollow">Bloch sphere</a> or <a href="http://nbviewer.ipython.org/url/bender.astro.sunysb.edu/classes/python-science/lectures/matplotlib-basics.ipynb" rel="nofollow">plotting on a sphere</a>. The first example is really nice  looking - axes are needed and heatmap.</p>