----- Forwarded message from Ruth
Flatscher <[email protected]> -----
Date: Thu, 28 Mar 2013
07:12:03 -0400
From: Ruth Flatscher <[email protected]>
Reply-To: Ruth Flatscher <[email protected]>
Subject: Re:
To: [email protected]
Dear
Clarissa,
I have never worked a lot on outlines but I would suggest that
to complement EFA you also try an Eigenshape/Extended Eigenshape analysis on
your data. According to what I've seen so far, results from Elliptic Fourier
Analysis and Eigenshape Analysis using the same set of outline shapes may differ
somewhat, and it would be reassuring to see that the outcomes do not disagree
too wildly when using different methods. You might want to have a look at the
morpho-tools webpage (http://www.morpho-tools.net/) where there are tools for Eigenshape
and Extended Eigenshape Analysis which run in Mathematica and WebMathematica. I
think you can directly use data digitized in TpsDig2. The documentation is not
too great, most of it is still unavailable in Jonathan Krieger's dissertation of
2007, but I guess he might send you a pdf if you contact him.
Best
wishes, and good luck with your study,
Ruth
P.S.: Maybe you already
know these papers, there are interesting articles about morphometrics on insect
genitalia by McPeek et al., e.g. http://onlinelibrary.wiley.com/doi/10.1111/j.1558-5646.2008.00527.x/abstract;jsessionid=73DB2F5F004B3C2C0F85DC84221894BA.d02t04?deniedAccessCustomisedMessage=&userIsAuthenticated=false
----- Forwarded message from "House, Clarissa" <[email protected]> -----
Date: Wed, 27 Mar 2013 18:59:57 -0400
From: "House, Clarissa" <[email protected]>
Reply-To: "House, Clarissa" <[email protected]>
Subject:
To: "[email protected]" <[email protected]>Hi all,
I am looking for software that describes the shape of a closed outline. I have tried 'SHAPE' but the contrast between my specimen (beetle genitalia) and the background isn't good enough, so the program 'found' outlines that were of use or interest. The Alpha version of 'Morpheus' is useful but this will only run on my aging laptop. Also, the coordinate data (done in tpsDIG) had to be completely rearranged for Morpheus. I thought to use the Beta version of 'Morpheus' but have been unable to find a users guide? Finally, I have got hold of a program; EFourier that was created by John Endler. Has anybody used this program and can give my any insights into is utility? Also is it possible to do Fourier analysis using the tps programs?
Many thanks for any suggestions,
Clarissa HouseEarly Career Leverhulme Fellow,
University of Exeter,
College of Life & Environmental Sciences,
Centre for Ecology and Conservation,
Penryn, TR10 8BS, UK.
----- End forwarded message -----
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