Hi, I used IMP to make some analyses for my thesis, and i investigated mandibles of rodents too. I experrienced some problems similar to yours and i think you should check the input file: Go to the end of the file and delete any blank space or line after the last character, in both input and group list files, then save your files again.
let me know cheers 2007/2/13, morphmet <[EMAIL PROTECTED]>: > > Hi everybody! > I am using geometric morphometrics in a study on mandibles of mice. I > have encountered problems using programs in the IMP series, and I would > be very grateful if somebody more experienced with these could give me a > hint on what to do here: > > 1)I load an output file from CoordGen and a GroupList file into CVAGen. > The program displays the landmarks but does not finish the analysis, > instead posting an error message: "The within-group sum of squares and > cross products matrix is singular". I have inspected both input files > several times; I cannot find any error; they do also perform well in > PCAGen. What does the message tell me about my data? > > 2) I load two X1Y1CS format files into TwoGroup. The landmarks are > displayed and I can calculate Goodalls F. Anyway, when I click on "F > test, Procrustes" I am getting an error message saying that "matrix > dimensions must agree". Why is this? What do I have to change? > > If anyone wishes to reply to me directly, my email address is: > [EMAIL PROTECTED] > Thank you very much and let me know if I can return you a favor. > > Louis > -- Fabio Murtas Nothing in biology make sense if not in Evolution light -- Replies will be sent to the list. For more information visit http://www.morphometrics.org
