-------- Original Message -------- Subject: relative warps to distance matrix? Date: Fri, 14 Mar 2008 07:09:44 -0700 (PDT) From: Katja Peijnenburg <[EMAIL PROTECTED]> To: [email protected] References: <[EMAIL PROTECTED]>
Dear morphmet, I have collected shape data of gastropod shells using the TPS software package and thus obtained 18 Relative Warp scores per individual. I would like to convert these data into a single distance matrix to use in a program 'Barrier' that draws 'barriers' between populations onto a geographical map. I noticed that the variance of relative warps is correlated with the proportion of variance they explain, so there seems no need to weigh the different relative warp scores. What does the morphmet community think? What would be the best way to convert Relative Warp scores to a distance matrix, and what distance should be used? Or, alternatively, would it be better to use the variance of each landmark, as was suggested to me by a colleague (using Morpheus)? Thank you very much for your opinion on this. Katja Peijnenburg [EMAIL PROTECTED] ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Dr. Katja T.C.A. Peijnenburg Marine Biodiversity, Ecology & Evolution (MARBEE) UCD School of Biology & Environmental Science UCD Science Centre West, room 228 University College Dublin Belfield Dublin 4 Republic of Ireland tel. +353.1.716.2013/2262 fax. +353.1.716.1152 http://www.ucd.ie/zoology/marbee/katja_peijnenburg.html email: [EMAIL PROTECTED] -- Replies will be sent to the list. For more information visit http://www.morphometrics.org
