Re: [MORPHMET] Ontogenetic changes in morphology

2015-02-18 Thread Pere M. Parés-Casanova
You can also perform this analysis as a multivariate linear model (using
first variable, ln(CS) as independent variable) with PAST. Nervertheless,
number of Procrustes versus number of specimens can be a problem if you
sample size is not large enough.

Pere M.



On Dm, Febrer 18, 2015 09:06, Anneke van Heteren wrote:
 Dear Adeline Yong

 Right now you are essentially plotting size (of the claw) against size (of
 the crab). What you are interested in is shape against size. I am not sure
 what program you are using now, but I would suggest MorphoJ, as it is
 quite
 user friendly. You should do a multivariate regression of the Procrustes
 coordinates onto size.You could then play around with different size
 measures. (ln) centroid size of the object of interest is commonly used
 for
 these types of analyses, but you could also try doing it with carapace
 size
 and see if you get different results.
 I hope that helps.

 Best wishes,

 Anneke van Heteren

 --
 MORPHMET may be accessed via its webpage at http://www.morphometrics.org

 To unsubscribe from this group and stop receiving emails from it, send an
 email to morphmet+unsubscr...@morphometrics.org.



-- 
Pere M. Parés-Casanova PhD
Part-time Lecturer
Dep. of Animal Production
School of Agrifood and Forestry Science and Engineering
University of Lleida
Av. Rovira Roure 191
25198 Lleida (CATALUNYA, Spain)
Phone:+34973706460
Fax:  +34973702874
   _
  ( \__
 \   )
  \ ---¬/
  / |
Confidentiality Note:  This message is intended for use only by the
individual or entity to which it is addressed and may contain information
that is privileged, confidential, and exempt from disclosure under
applicable law. If you have received this communication in error,  please
contact the sender immediately and destroy the material in its entirety,
whether electronic or hard copy. Kindly note that, E-mail transmission
cannot be guaranteed to be secured or error-free as information could be
intercepted, corrupted,lost, destroyed, arrive late or incomplete, or
contain viruses. The sender therefore does not accept liability for any
errors or omissions in the contents of this message, which arise as a
result of e-mail transmission. If verification is required please request
a signed hard-copy/scanned version. Thank you, gràcies.

-- 
MORPHMET may be accessed via its webpage at http://www.morphometrics.org

To unsubscribe from this group and stop receiving emails from it, send an email 
to morphmet+unsubscr...@morphometrics.org.


[MORPHMET] Symmetries with EFA

2014-11-27 Thread Pere M. Parés-Casanova
Dear morphometricians.
I have a nice collection of plastral designs for Testudo hermanni
hermanni. They have been processed with SHAPE in order to obtaing harmonic
coefficients (for Elliptical Fourier analysis).
It was not the initial objectve of the study (which was the form
differentiation according to geographical origins), but now we thonk it
could be a good idea to study bilateral symmetries between  rght and left
designs.
Now iswhen it arises my problem: any idea how to process this kind of data?
Any answer will be well received!

-- 
Pere M. Parés-Casanova PhD
Part-time Lecturer
Dep. of Animal Production
School of Agrifood and Forestry Science and Engineering
University of Lleida
Av. Rovira Roure 191
25198 Lleida (CATALUNYA, Spain)
Phone:+34973706460
Fax:  +34973702874
   _
  ( \__
 \   )
  \ ---¬/
  / |
Confidentiality Note:  This message is intended for use only by the
individual or entity to which it is addressed and may contain information
that is privileged, confidential, and exempt from disclosure under
applicable law. If you have received this communication in error,  please
contact the sender immediately and destroy the material in its entirety,
whether electronic or hard copy. Kindly note that, E-mail transmission
cannot be guaranteed to be secured or error-free as information could be
intercepted, corrupted,lost, destroyed, arrive late or incomplete, or
contain viruses. The sender therefore does not accept liability for any
errors or omissions in the contents of this message, which arise as a
result of e-mail transmission. If verification is required please request
a signed hard-copy/scanned version. Thank you, gràcies.

-- 
MORPHMET may be accessed via its webpage at http://www.morphometrics.org

To unsubscribe from this group and stop receiving emails from it, send an email 
to morphmet+unsubscr...@morphometrics.org.