I'm a bit of a newb 2 all that is fuzzy.

Does ne1 know if its possible to use Simpson's Rule to calculate a fuzzy manifold centroid? I know how to fuzzify crisp variables into FLVs and defuzzify them again but i wanna know if its possible to improve the accuracy of my theoretical fuzzy associative matrix rule base, 'cos I would like to get the most accurate logic possible. [img]images/smiles/icon_smile.gif[/img]

Also I've been looking up hyper complex numbers and quarternions does ne1 know any good tuts for quarternions or IK?

The point of fuzziness is that it's fuzzy [img]images/smiles/icon_smile.gif[/img] Finding the centroid is finding the centroid, you can do it the easy way or by finding the actual 2D mass centroid, but bottom line is that I have played with this stuff enough to realize it all blends together and you end up with the same results most of the time anyway -- I suggest you make a VISUAL tool, so you can see what's going on. As far as a quat book, if you are very mathematical (a degree in in preferable) then I suggest my favorite text:

"Quaternions and rotation sequences"

NeCroN.TTL

Thx 4 da advice [img]images/smiles/icon_smile.gif[/img]

One year to the day since the last reply. Happy Anniversary.