Hi I wrote functions in R that do this (align along the midline plane, and either average left and right or fill in NA's based on the other side).I'll be happy to send it to you and anyone else who's interested. I've been meaning to put them online but I don't even have a website yet and no time so far to make one... Best, Annat
---------- Annat Haber, PhD candidate Committee on Evolutionary Biology University of Chicago Culver Hall 402 1025 E. 57th St. Chicago IL 60637 Office: Hinds 289 [EMAIL PROTECTED] c: 773 576 4205 > From: morphmet <[EMAIL PROTECTED]> > Reply-To: <[email protected]> > Date: Wed, 05 Dec 2007 10:10:48 +0100 > To: morphmet <[email protected]> > Subject: missing points and symetrization > Resent-From: <[email protected]> > Resent-Date: Wed, 5 Dec 2007 01:12:10 -0800 (PST) > > I a m working on human skulls fossiles. Therefore there are many missing > points and I decided to replace the bilateral points by the symetric > (right<->left) points. (Of course this does not solve the problem when > the missing points have no symetric and when both symetric are missing.) > I am working on 3D data and found only morpheus to partially answer my > problem: > 1) For each individual I construct the symetric by changing the sign of > one coordinate (x, y or z) > 2) I import each individual and its symetric to Morpheus then do a gpa > of those 2 images (individual and its symetric) > 3) I use the consensus, unscaled, for the further work (gpa, pca > etc...with the R shapes library of Ian Dryden) on all my skulls > Therefore, I am working on completely symetric skulls because all > symetric points (right and left) are averaged. > I did this procedure one by one, which is a little bothering and working > like a donkey. This was possible with my 100 skulls used in my master > degree, but no more now with hundreds of Pan, Gorilla, Homo etc... > I am now looking for an automatic procedure to do this job. Do anyone > know a software that could help ? > > Thank youy for your answers > > Stéphane BOUEE, Paris, France > [EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]> > > -- > Replies will be sent to the list. > For more information visit http://www.morphometrics.org > -- Replies will be sent to the list. For more information visit http://www.morphometrics.org
