Re: [MORPHMET] PC Scores From Other PCA in MorphoJ
Dear Andrea For the "PC Scores From Other PCA" procedure, you need a dataset (which contains the items for which you want to compute the scores) and a PCA. The dialog box has two drop-down menus, one for selecting the dataset and the other for selecting the PCA. When you select a dataset, the set of PCAs that is available in the secod drop-down menu changes: only those PCAs are shown that are consistent with the dataset in the number of landmarks, dimensionality, object symmetry etc. So PCAs do appear and disappear in the drop-down menu depending on what dataset you have selected. Covariance matrices are only involved as far as a covariance matrix is necessary to run a PCA. The covariance matrices themselves do not appear in conection with the procedure. I hope this helps. Best wishes, Chris On 12/12/2016 12:18, andrea cardini wrote: Today is my morphmet-day. A question, this time, please. Is there anyone with experience on the "PC Scores From Other PCA" in MorphoJ? I am trying to project shape coordinates on a matrix I imported and attached to a dataset with mean shapes, but the attached dataset does not show up in the menu: I can see the parent dataset (before averaging) with the imported covariance matrix but, as soon as I select the mean shapes (despite being the data to which the covar. matrix is attached), the imported covar. matrix vanishes. That means that I can project the parent dataset (non-averaged) onto the vectors from the imported matrix but can't do it with the mean shapes (which is my aim). I'll do it in NTSYSpc or R, but I'd be curious to understand what I am getting wrong in MorphoJ. Thanks in advance for any suggestion. Cheers Andrea -- *** Christian Peter Klingenberg School of Biological Sciences University of Manchester Michael Smith Building Oxford Road Manchester M13 9PT United Kingdom Web site: http://www.flywings.org.uk E-mail: c...@manchester.ac.uk Phone: +44 161 2753899 Skype: chris_klingenberg *** -- 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.
[MORPHMET] PC Scores From Other PCA in MorphoJ
Today is my morphmet-day. A question, this time, please. Is there anyone with experience on the "PC Scores From Other PCA" in MorphoJ? I am trying to project shape coordinates on a matrix I imported and attached to a dataset with mean shapes, but the attached dataset does not show up in the menu: I can see the parent dataset (before averaging) with the imported covariance matrix but, as soon as I select the mean shapes (despite being the data to which the covar. matrix is attached), the imported covar. matrix vanishes. That means that I can project the parent dataset (non-averaged) onto the vectors from the imported matrix but can't do it with the mean shapes (which is my aim). I'll do it in NTSYSpc or R, but I'd be curious to understand what I am getting wrong in MorphoJ. Thanks in advance for any suggestion. Cheers Andrea -- Dr. Andrea Cardini Researcher, Dipartimento di Scienze Chimiche e Geologiche, Università di Modena e Reggio Emilia, Via Campi, 103 - 41125 Modena - Italy tel. 0039 059 2058472 Adjunct Associate Professor, School of Anatomy, Physiology and Human Biology, The University of Western Australia, 35 Stirling Highway, Crawley WA 6009, Australia E-mail address: alcard...@gmail.com, andrea.card...@unimore.it WEBPAGE: https://sites.google.com/site/alcardini/home/main FREE Yellow BOOK on Geometric Morphometrics: http://www.italian-journal-of-mammalogy.it/public/journals/3/issue_241_complete_100.pdf ESTIMATE YOUR GLOBAL FOOTPRINT: http://www.footprintnetwork.org/en/index.php/GFN/page/calculators/ -- 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.
