Thank you Dean, Of course, numbers should differ. But in my case, there is no correlation between two sets. I guess that in theory the two sets should have r at least around 0.9?
On Tuesday, October 31, 2017 at 5:31:51 PM UTC+3, dcadams wrote: > > Andrey, > > > > It is unreasonable to expect the numbers will match perfectly between > these two software packages, as the way in which they perform the > operations differs. First, MorphoJ uses Full Procrustes fit, whereas the > TPS series, geomorph, and others use Partial Procrustes fitting. That will > make a difference. > > > > Second, there may be additional differences in in how the superimponsed > specimens, and thus the consensus, is aligned relative to the X-Y > coordinate system. Some packages allow one to rotate the consensus and > aligned specimens to their principal axes post-superimposition. That too > could lead to differences. > > > Dean > > > > Dr. Dean C. Adams > > Professor > > Department of Ecology, Evolution, and Organismal Biology > > Department of Statistics > > Iowa State University > > www.public.iastate.edu/~dcadams/ > > phone: 515-294-3834 > > > > *From:* Andrey Lissovsky [mailto:[email protected] <javascript:>] > *Sent:* Tuesday, October 31, 2017 9:26 AM > *To:* MORPHMET <[email protected] <javascript:>> > *Cc:* [email protected] <javascript:>; [email protected] <javascript:> > *Subject:* Re: [MORPHMET] Procrustes fit > > > > Thank you, Andrea > > I understand that difference should be tiny, so something goes wrong. I > enclose one of my tps files. Usually I check dots and commas, so the reason > is probably in some different way.. > It is possible that I am mixing up menu items.. Last time I use this > software, the labels were different. > Now I use: > In MorphoJ: Preliminaries -- New Procrustes fit -- Align by principle axes > then: Export dataset -- Procrustes coordinates > In TPS Relw: Actions -- Consensus > then: File -- Save -- Aligned specimens > Is this ok? Should these chains lead to the same results? > > On Tuesday, October 31, 2017 at 5:04:56 PM UTC+3, alcardini wrote: > > Andrey, the last time I checked this (last July, I believe), differences > between MorphoJ and TPSRelw were tiny and negligible. I compared MorphoJ > with R in the last days, and again differences were tiny. > > The first thing I'd check is whether there's an issue with commas vs > dots as decimal separators. > If you send me the tps file, I can give a quick look. > > Cheers > > Andrea > > -- > 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 [email protected] <javascript:>. > -- 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 [email protected].
