----- Forwarded message from
morphmet_modera...@morphometrics.org -----
Date: Fri, 21 Mar 2014
20:41:01 -0700
From: morphmet_modera...@morphometrics.org
Reply-To: morphmet_modera...@morphometrics.org
Subject: RE: geomorph
gpagen coordinates
To: morphmet@morphometrics.org
----- Forwarded message from
morphmet_modera...@morphometrics.org -----
Date: Fri, 21 Mar 2014
15:50:19 -0700
From: morphmet_modera...@morphometrics.org
Reply-To: morphmet_modera...@morphometrics.org
Subject: RE: geomorph
gpagen coordinates
To: morphmet@morphometrics.org
----- Forwarded message from "Adams, Dean [EEOBS]"
<dcad...@iastate.edu> -----
Date: Wed, 12 Mar 2014 09:05:19
-0400
From: "Adams, Dean [EEOBS]" <dcad...@iastate.edu>
Reply-To: "Adams, Dean [EEOBS]" <dcad...@iastate.edu>
Subject:
RE: geomorph gpagen coordinates
To: "'morphmet@morphometrics.org'"
<morphmet@morphometrics.org>
Alejo,
The default in gpagen() aligns the coordinates and then projects into Tangent
space. Thus they are Procrustes Tangent coordinates (see help file). One can
disable the projection step using the option Proj=FALSE.
Dean
--
Dr. Dean C. Adams
Professor
Department of Ecology, Evolution, and Organismal Biology
Department of Statistics
Iowa State University
Ames, Iowa, 50011
www.public.iastate.edu/~dcadams/
phone: 515-294-3834
From: morphmet_modera...@morphometrics.org
[mailto:morphmet_modera...@morphometrics.org]
Sent: Wednesday, March 12, 2014 3:14 AM
To:
morphmet@morphometrics.org
Subject: geomorph gpagen
coordinates
----- Forwarded message from "Alejo ." <alejo.c.scar...@gmail.com> -----
Date: Fri, 7 Feb 2014 19:06:47 -0500
From: "Alejo ." <alejo.c.scar...@gmail.com>
Reply-To: "Alejo ." <alejo.c.scar...@gmail.com>
Subject: geomorph gpagen coordinates
To: morphmet@morphometrics.org
Hi all, first thanks for a so useful package! I have a question about "gpagen". I understand that the resulting coordinates of this command are in shape space, so for statistical analisys one must project them to tangent space. But the command "plotTangetSpace" runs "prcomp" directly over gpagen's coordinates. The gpagen's resulting coordinates are already on tangent space? Thanks a lot in advance
Alejo
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