Thanks to everyone who have replied, I sure have a lot of reading to do, but overall I feel more comfortable about my data. I might end up playing around with removing some semi-landmarks, figuring that it shouldn't affect in much the outcome. I'll get back in case I find any other doubts.
Thanks again El lunes, 5 de noviembre de 2018, 11:52:57 (UTC-6), Diego Ardón escribió: > > Good day everybody, I actually have two questions here regarding > semi-landmarks: > > So, I was adviced to use semi-landmarks, I placed them with MakeFan8, > saved the files as images and then used TpsDig to place all landmarks, > however I didn't make any distinctions between landmarks and > semi-landmarks. What unsettles me is (1) that I've recently comed across > the term "sliding semi-landmarks", which leads me to believe semi-landmarks > should behave in a particular way. > > The second thing that unsettles me is whether "more semi-landmarks" means > a better analysis. I can understand that most people wouldn't use 65 > landmarks+semilandmarks because it's a painstaking job to digitize them, > however, in my recent reads I've comed across concepts like a "Variables to > specimen ratio", which one paper suggested specimens should be 5 times the > number of variables. I do have a a data set of nearly 400 specimens, but it > does come short if indeed I should have 65*2*5 specimens! > > Please, I'll appreciate some feedback :) > -- MORPHMET may be accessed via its webpage at http://www.morphometrics.org --- You received this message because you are subscribed to the Google Groups "MORPHMET" group. To unsubscribe from this group and stop receiving emails from it, send an email to morphmet+unsubscr...@morphometrics.org.
