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The first animation (8.3 Meg quicktime) demonstrates the barycentric opacity maps. I'm assigning opacity to the linear anistropy corner, but the size of the opaque region starts out large and gradually shrinks, by the end showing only the most linearly anisotropic regions.

The second animation (7.3 meg quicktime) shows how hue-balls can color the data. I've cut the brain in half so that its easier to see what's going on inside. In this case, the hue-ball and the input vector are fixed in world space, though either or both of them could be fixed in view space. The shading is standard surface shading, using the gradient of opacity as the "surface normal".