How do you Anisotropic map ?

How do you guys are making Anisotropic reflexion map ?

Those maps are vector maps like normal maps are, so there is a special way to make them.

I didn't find a lot of things on the net, but i think that for next gen game this will be kind of important.

http://udn.epicgames.com/Three/AnisotropicLighting.html
http://xsi.jankin.com/anisotropic_patterns/

Wich software are you using ? If it's photoshop how do you think in a vectore way ? it took me few years to get a really good understanding of normal map i'd like to understand Anisotropic map now :-)

Thanks in advance.
Massimo