----- Forwarded message from Diego Astua de
Moraes <d.a.mor...@gmail.com> -----
Date: Wed, 22 May 2013
09:50:23 -0400
From: Diego Astua de Moraes
<d.a.mor...@gmail.com>
Reply-To: Diego Astua de Moraes
<d.a.mor...@gmail.com>
Subject: Missing landmarks in 3D
To: morphmet@morphometrics.org
This may be obvious to several here, but as this is our first work
with 3D lmks, I probably missed an easy step.
Is
there a straightforward way to obtain a landmark by reflecting its symmetric
through the saggital plane (I want to replace a missing lmk that is present on
the other side). I can do that easily in 2D by translating and rotating the
midline so that it matches the x or y axis, and the obtain the reflected lmk,
but I don´t deal that well with 3D translations and rotations...
I would like to do that on my landmark set before
"gluing" the dorsal and ventral datasets on DVLR. DVLR does provide the option
of a missing landmark but it is still missing the the combined view...
In time, I am only going through this because my
sample size for this particular taxon is really small and every specimen
matters, and because the missing landmark is a different one in each specimen
(meaning I cannot simply discard that lmk...).
Thanks
Diego
Diego Astúa de Moraes,
D.Sc.
Laboratório de Mastozoologia
Departamento de Zoologia, Universidade Federal de Pernambuco
Av. Professor Moraes Rego, s/n. Cidade Universitária
50670-420 Recife, PE, Brasil.
Te./Fax: (81) 2126-8353
email: d.a.mor...@gmail.com / diegoas...@ufpe.br
http://www.ufpe.br/mastozoologia/
Laboratório de Mastozoologia
Departamento de Zoologia, Universidade Federal de Pernambuco
Av. Professor Moraes Rego, s/n. Cidade Universitária
50670-420 Recife, PE, Brasil.
Te./Fax: (81) 2126-8353
email: d.a.mor...@gmail.com / diegoas...@ufpe.br
http://www.ufpe.br/mastozoologia/
----- End forwarded message
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