Dear Graham I think Ashly just gave you the answer to your question, maybe Chris Klingenberg can have a complement with more details, if not maybe the article of Klingenberg 2015 could help, but let see if Chris can help you with this
Not a complement but just a repetition, in the Help version of MorphoJ there is a clear box that said: (just repeating the Ashly said a month ago and I just saw it in the MorphoJ website) "If the data have object symmetry or if a Side effect was included in the analysis, the output dataset also contains individual scores that quantify the amount of fluctuating asymmetry of shape for each individual (Klingenberg and Monteiro 2005). These scores quantify the individual asymmetries of shape (as deviations from the mean asymmetry) either in units of Procrustes distance (absolute shape differences) or by using Mahalanobis distances (scaled relative to the variation of asymmetry in the sample)." This paragraph I think should reply to your question regarding intensity of asymmetry and also the distances differences, adding that Mahalanobis include the covariance of the coordinate as Joe`s mentioned in this very clever ONE word hahaha!! My advice is do not complicate it, export the scores and take a look at the differences between individuals... Tomorrow I will be teaching a lesson in Symmetry in a course of Introduction to Geometric Morphometrics but is in *Spanish*, if you take a look into my website ( https://www.morphoshape.com/courses) in course section maybe you can attend it (will be in Spanish at 9:00 Chilean time GMT-4) if not, I'm uploading the lessons of the Spanish course in the youtube channel of my lab where is also included the last Congreso IberoAmericano de Morfometria Geometrica. ( https://www.youtube.com/channel/UC3u2zaZZEZ1MyiMu9Y8GFoA) Good luck Best wishes Hugo El mar., 14 jul. 2020 a las 14:54, Joe Felsenstein (<[email protected]>) escribió: > Graham Freitas -- > > > > And some one can please in a simple word explain the differences when we > use the Procrustes Distances and Mahalanobis Distances please when we > evaluate shape differences. > > > > SureICanDoThatIt'sThatMahalanobisDistanceTakesIntoAccountTheCovariancesAmongTheCoordinates > > (one word) > > J.F. > ----- > Joe Felsenstein [email protected] > Department of Genome Sciences and Department of Biology, > University of Washington, Box 355065, Seattle, WA 98195-5065 USA > > -- > 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 [email protected]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/morphmet2/CABXfcPETc8R%2BWbdrbeNNc6xOh4UE5KRNR-Zak-yyAKPSBh0RGw%40mail.gmail.com > . > -- *Dr. Hugo A. Benítez* Profesor Asociado Centro de Investigación de Estudios Avanzados del Maule Universidad Católica del Maule Research Associate, University of Cambridge Museum of Zoology External Researcher Faculty of Agriculture, University of Zagreb Lab website: http://www.morphoshape.com <http://www.hugoabenitez.com> -- 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 [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/morphmet2/CACTC4WpW2V4h7T%2BtqQvaaqC1aE-BF%2B35dy8Pnuon-6iGiJ0vnA%40mail.gmail.com.
