: Sat, 05 Mar 2011 15:36:13 +0100
From: Enrico Rezendeenrico.reze...@uab.cat
Subject: Re: [R-sig-phylo] Dealing with Bounded Trait Measures
To: David Bapstdwba...@uchicago.edu
Cc: R Sig Phylo Listservr-sig-phylo@r-project.org
David,
on the top of my head, if no species
and Rose, 2009
http://www.ucpress.edu/books/pages/10604.php
Original message
Date: Sat, 05 Mar 2011 15:36:13 +0100
From: Enrico Rezendeenrico.reze...@uab.cat
Subject: Re: [R-sig-phylo] Dealing with Bounded Trait Measures
To: David Bapstdwba...@uchicago.edu
Cc
David,
on the top of my head, if no species measurement strictly corresponds to
zero, you may log-transform the data. You may then simulate Brownian
motion in log-transformed values, which will correspond to a boundary of
zero in a linear scale (i.e., the more negative the log number, the
://www.biology.ucr.edu/people/faculty/Garland/GarlandPublications.html
Garland and Rose, 2009
http://www.ucpress.edu/books/pages/10604.php
Original message
Date: Sat, 05 Mar 2011 15:36:13 +0100
From: Enrico Rezende enrico.reze...@uab.cat
Subject: Re: [R-sig-phylo] Dealing
Mar 2011 15:36:13 +0100
From: Enrico Rezendeenrico.reze...@uab.cat
Subject: Re: [R-sig-phylo] Dealing with Bounded Trait Measures
To: David Bapstdwba...@uchicago.edu
Cc: R Sig Phylo Listservr-sig-phylo@r-project.org
David,
on the top of my head, if no species
Original message
Date: Sat, 5 Mar 2011 19:28:26 +0100
From: Alejandro Gonzalez alejandro.gonza...@ebd.csic.es
Subject: Re: [R-sig-phylo] Dealing with Bounded Trait Measures
To: tgarl...@ucr.edu
Hello,
Is there any plans, be it short-term or in the future, to implement
Garland and Rose, 2009
http://www.ucpress.edu/books/pages/10604.php
Original message
Date: Sat, 05 Mar 2011 15:36:13 +0100
From: Enrico Rezendeenrico.reze...@uab.cat
Subject: Re: [R-sig-phylo] Dealing with Bounded Trait Measures
To: David Bapstdwba
and Rose, 2009
http://www.ucpress.edu/books/pages/10604.php
Original message
Date: Sat, 05 Mar 2011 15:36:13 +0100
From: Enrico Rezendeenrico.reze...@uab.cat
Subject: Re: [R-sig-phylo] Dealing with Bounded Trait Measures
To: David Bapstdwba...@uchicago.edu
Cc: R
All-
As far as I understand it, the vast majority of continuous character
analyses assume that the trait is distributed normally and without
bounds. Is there an appropriate transformation to for measurements of
a trait that does have one or more bounds and where some taxa actually
are at that
