Hi Adeline, I don't have much experience with allometry but for my studies I've been using the *geomorph* package in R and I know it has some allometry functions, which could maybe be helpful for you. You can upload the newest version here: http://www.geomorph.net/ and the user-guide which is really good can be found here https://www.academia.edu/7244604/User_Guide_to_Geomorph_v2.1
Good luck with your project! Hildur On Tuesday, February 17, 2015 at 2:54:59 PM UTC, adeline.yongyp wrote: > > Hi Everyone, > > I am exploring the use of GMM to study the ontogenetic changes of claw > morphology in one species of crabs. The tips of the crab claws changes in > curvature (shape) as they grow and there are distinct differences if I > compare the claws of the juvenile crabs and the adults. However, the > intermediate stages are not so obvious. Crabs of various sizes (age) were > collected from two populations and I would like to determine the size when > the change in tip curvature most likely starts for each population. All the > major claws of each crab were photographed and landmarks were placed at the > homologous points of the claws. Semi-landmarks were used for the claw tips > as there were no homologous points along the curvature. ln centrold size > of each individual claw was computed and plotted against body size > (carapace width) of the crabs. I am not sure if I am approaching this the > correct way. Any help would be appreciated. > > Thanks in advance. > > Adeline > -- MORPHMET may be accessed via its webpage at http://www.morphometrics.org To unsubscribe from this group and stop receiving emails from it, send an email to [email protected].
