-------- Original Message -------- Subject: Re: edit weight matrix Date: Wed, 26 Jan 2011 10:48:48 -0500 From: Carmelo Fruciano <[email protected]> To: [email protected]
Dear Morphometricians, I am a PhD student at Humboldt University (Berlin, Germany) and is working on systematic revision of southern African Mastomys (Rodentia: Muridae). My project involves traditional and geometric morphometrics techniques. I am getting stuck on how to edit partial warps weight scores before doing a Canonical variates analysis. Partial weight scores as produced by the TpsRelw programme. Is there a simple tutorial available on editing the weight matrix that is produced by this programme before I can do a CVA? How do I divide the weight matrix according to the OTU's?
Dear Seth, files produced by TPS programs can be considered as text files and can, therefore, be edited with simple tools like Windows Notepad or be imported in spreadsheet programs such as Microsoft Excel or Openoffice Calc. The way you have to edit your matrix depends essentially on the downstream application (that is, the software you will use for doing the CVA): importing a matrix saved as NTS in a spreadsheet program should be enough to prepare data for most "all-purpose" statistical packages (like STATISTICA or SPSS). If you want to perform a CVA with NTSYSpc you might find useful to save in NTS format and then use the "Split NTS file" function of tpsUtil. All the best Carmelo -- Carmelo Fruciano Dipartimento di Biologia University of Catania Tel. +39 095 7306023 Cell. +39 349 5822831 e-mail [email protected] ---------------------------------------------------------------- Universita' di Catania - A.P.Se.Ma. Servizio di Posta Elettronica
