Rather that simply permuting the order of the entire list of Y values in relation to the X values, that option permits is the following:
1) permutations are only done within a block of adjacent observations. For example, if one had data at two times for each specimen one could randomly permute which observation was considered early vs. late. 2) permutations are only done among blocks of adjacent observations. For the example mentioned above one would permute the individuals but preserve which observation was from early vs. late. ------------------------ F. James Rohlf, Distinguished Professor Ecology & Evolution, Stony Brook University www: http://life.bio.sunysb.edu/ee/rohlf > -----Original Message----- > From: morphmet [mailto:[EMAIL PROTECTED] > Sent: Tuesday, September 18, 2007 10:45 AM > To: morphmet > Subject: TPSregr permutations > > Dear morphometricians, > please, is there anyone who has done permutation tests in TPSregr for > repeated testing of the same individual? It should be something that is > specified by using the "among blocks" option in the permutation test > window. However, I am not completely sure about how to specify the > order of > the specimens in the data files. > Thanks a lot, in advance, for your help. > Cheers > > Andrea > > > > > Dr. Andrea Cardini > Lecturer in Animal Biology > Museo di Paleobiologia e dell'Orto Botanico > Universitá di Modena e Reggio Emilia > via Università 4, 41100, Modena, Italy > tel: 0039 059 2056532 > fax: 0039 059 2056535 > & > Hull York Medical School > The University of York, Heslington, York YO10 5DD, UK > > E-mail address: [EMAIL PROTECTED], [EMAIL PROTECTED], > [EMAIL PROTECTED] > http://hyms.fme.googlepages.com/drandreacardini > > > > -- > Replies will be sent to the list. > For more information visit http://www.morphometrics.org -- Replies will be sent to the list. For more information visit http://www.morphometrics.org
