Hi all, For computing relative warps in my program PAST, I have used the approach given by in the book Statistical Shape Analysis by Dryden & Mardia. The formulations differ a bit from those given by Bookstein, Rohlf etc. but are (hopefully!) equivalent.
Now the problem is that I feel obliged to include the affine component, which is not described by Dryden & Mardia - they just calculate it separately and do not integrate it with the other relative warp components. I admit I am confused by the methods for including the affine component as used e.g. in tpsRelw, and even more mystified as to how to do a similar thing within the framework of Dryden & Mardia. Has anyone, by any chance, run into a similar problem and solved it? I would be grateful for any advice! (I suppose I could start the programming all over and follow e.g. Rohlf instead of Dryden & Mardia, but this would be a little work ...) Thanks, and regards, Oyvind Hammer Natural History Museum University of Oslo -- Replies will be sent to the list. For more information visit http://www.morphometrics.org
