-------- Original Message --------
Subject: Re: Using tps-software: Request about quantification of wing
forms in birds
Date: Tue, 6 Apr 2010 10:13:44 +0200
From: Sonja Windhager <[email protected]>
To: <[email protected]>
Dear Anna,
in my understanding of the tps software workflow, it would be easiest to
digitize the landmarks in tpsDig as you did, then load this file (from
the tpsDig program) into tpsUtil to define the sliders and save the
sliders file. You can then load both the file from the tpsDig program
and the sliders file into tpsRelw to start the shape analysis.
Procrustes superimposition and sliding of the semilandmarks will be
conducted iteratively as the first step in tpsRelw, so you do not
necessarily need other programs intermediately. You can then save the
aligned specimens with the slid landmarks as .tps or .nts file to
conduct further analyses in tpsRegr or other software such as Morpheus
et al. or Morphologika and many more.
On the other hand, I have to admit that I did not understand the part on
“standardizing the semilandmarks”. What result would you like to
achieve—symmetrically slid semilandmarks?
PS. I did not find any file attached to the email.
I hope this helps.
Best wishes, Sonja
--
Mag. Sonja Windhager
Department of Anthropology, University of Vienna
Althanstrasse 14, A-1090 Vienna/Austria
Email [email protected]
Tel +43-1-4277-54713, fax +43-1-4277-9547
-------- Original Message --------
Subject: Using tps-software: Request about quantification of wing forms
in birds
Date: Thu, 1 Apr 2010 05:46:58 -0400
From: Anna <[email protected]>
To: [email protected]
Hello everyone,
within the framework of my diploma thesis I need to use F. James Rohlf´s
tps-software to identify the wing shape of Northern Wheatears (a small
passerine long-distance migrant). I´ve already startet to digitalize my
wing fotos and created landmarks on the wingtips. Now I have some
problems to continue. I have used CoordGen to save the file as
Bookstein´s Superimposition and also standardized the semilandmarks by
mirroring the wing coordiantes axially-symmetrically. But I don´t really
get why to do so?
After saving the file as Procrustes (tps-format) in CoordGen, I now have
to create a slider file to generate the semilandmarks. Here I got stuck!
When trying to open the Procrustes-tps-file in tpsUtil, I always fail.
What i did: Operation --> Make sliders file Input --> appropriate file
(see attached) Output --> selected output file There must be something
wrong, because "tpsUtil" says: "Wrong fromat, perhaps this is a tps
file?" Well, it is actually a nts file.
The next step would be to use tpsRelw to move the semilandmarks.
I hope anyone can solve these problems with the software so that I can
continue determining wing morphology with this great method as soon as
possible.
Thanks a lot.
Best Wishes,
Anna
--
For now, new message AND replies should be sent to:
[email protected]
<mailto:[email protected]>
/* Replies will be sent to the list. */
For more information visit http://www.morphometrics.org
--
For now, new message AND replies should be sent to:
[email protected]
/* Replies will be sent to the list. */
For more information visit http://www.morphometrics.org
