Yes, an analysis of shape variation ignores size unless you want to, for example, look at the relationship between shape and size__________________F. James Rohlf, Distinguished Prof. Emeritus Dept. Anthropology and Ecology & Evolution Stonybrook University -------- Original message --------From: Bailey Hewitt <[email protected]> Date: 9/10/24 8:21 PM (GMT-05:00) To: [email protected] Subject: [MORPHMET2] Scale in TPS affects procrustes analyses and PCA? Hi all,I am still learning the ropes to geometric morphometrics and so I am hoping this question isn't a huge burden!I have images where I cannot set a scale when I place landmarks and I want to double check that I am right in thinking that this isn't a huge deal because once I run generalized procrustes analysis, the size factor is removed anyway? So using the gpa coordinates to run a PCA would be the same whether the raw data had a set scale or not? Am I on the right track?Thank you!Bailey
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