of evidence. The American Naturalist
160, 712–726.
Cheers,
Ted
Theodore Garland, Jr., Professor
Department of Biology
University of California, Riverside
Riverside, CA 92521
Office Phone: (951) 827-3524
Facsimile: (951) 827-4286 (not confidential)
Email: tgarl...@ucr.edu
http://www.biology.ucr.edu
.com]
Sent: Tuesday, May 10, 2016 3:32 PM
To: Theodore Garland Jr
Cc: r-sig-phylo@r-project.org
Subject: Re: [R-sig-phylo] simulating continuous data
Thanks Joe and Ted,
By similar scaling, I just meant (as Ted guessed) that the root value depends
on the empirical trait data, and does not start at 0
Theodore Garland, Jr., Professor
Department of Biology
University of California, Riverside
Riverside, CA 92521
Office Phone: (951) 827-3524
Facsimile: (951) 827-4286 (not confidential)
Email: tgarl...@ucr.edu
http://www.biology.ucr.edu/people/faculty/Garland.html
http://scholar.google.com
o see what they did for the various
traits studied.
Cheers,
Ted
Theodore Garland, Jr., Professor
Department of Biology
University of California, Riverside
Riverside, CA 92521
Office Phone: (951) 827-3524
Facsimile: (951) 827-4286 (not confidential)
Email: tgarl...@ucr.edu
http://www.biology.ucr.
.
Garland, T., Jr., A. W. Dickerman, C. M. Janis, and J. A. Jones. 1993.
Phylogenetic analysis of covariance by computer simulation. Systematic Biology
42:265–292.
Cheers,
Ted
Theodore Garland, Jr., Professor
Department of Biology
University of California, Riverside
Riverside, CA 92521
Office Phone
.
Cheers,
Ted
Theodore Garland, Jr., Professor
Department of Biology
University of California, Riverside
Riverside, CA 92521
Office Phone: (951) 827-3524
Facsimile: (951) 827-4286 (not confidential)
Email: tgarl...@ucr.edu
http://www.biology.ucr.edu/people/faculty/Garland.html
http://scholar.google.com
. Phylogenetic regression for binary
dependent variables. Pages 231-261 in Modern Phylogenetic Comparative Methods
and Their Application in Evolutionary Biology: Concepts and Practice, L. Z.
Garamszegi, ed. Springer: Heidelberg.
Cheers,
Ted
Theodore Garland, Jr., Professor
Department of Biology
are equivalent. Systematic
Biology 61:382–391.
Cheers,
Ted
Theodore Garland, Jr., Professor
Department of Biology
University of California, Riverside
Riverside, CA 92521
Office Phone: (951) 827-3524
Facsimile: (951) 827-4286 (not confidential)
Email: tgarl...@ucr.edu
http://www.biology.ucr.edu
called for.
Cheers,
Ted
Theodore Garland, Jr., Professor
Department of Biology
University of California, Riverside
Riverside, CA 92521
Office Phone: (951) 827-3524
Facsimile: (951) 827-4286 (not confidential)
Email: tgarl...@ucr.edu
http://www.biology.ucr.edu/people/faculty/Garland.html
http
It's not that r squared isn't meaningful for generalized least squares but
rather that it cannot be compared directly with values from OLS models.
Cheers,
Ted
From: R-sig-phylo [r-sig-phylo-boun...@r-project.org] on behalf of Sergio
Ferreira Cardoso [sff.card...@campus.fct.unl.pt]
Sent:
as for
phylogenetically independent contrasts.
Cheers,
Ted
Theodore Garland, Jr., Professor
Department of Biology
University of California, Riverside
Riverside, CA 92521
Office Phone: (951) 827-3524
Facsimile: (951) 827-4286 (not confidential)
Email: tgarl...@ucr.edu
http://www.biology.ucr.edu
Yep, we've all been down this road before, but I'm too old to remember!
Thanks and cheers,
Ted
From: Paolo Piras [paolo.pi...@uniroma3.it]
Sent: Thursday, July 16, 2015 2:38 PM
To: Solomon Chak; Theodore Garland Jr
Cc: r-sig-phylo@r-project.org
Subject: Re: [R-sig-phylo] PGLS with non
traits, but I am
sure you could do this with simulations.
Cheers,
Ted
Theodore Garland, Jr., Professor
Department of Biology
University of California, Riverside
Riverside, CA 92521
Office Phone: (951) 827-3524
Facsimile: (951) 827-4286 (not confidential)
Email: tgarl...@ucr.edu
http
(through the
origin, of course) of one trait on the other. Save the residuals. Compare
them with the phylogenetic residuals you get from some other program that
does a PGLS regression (not with any transformation of the branch lengths).
Let us know what you find!
Cheers,
Ted
Theodore Garland, Jr
Thank you, Liam!
Cheers,
Ted
From: Liam J. Revell [liam.rev...@umb.edu]
Sent: Wednesday, June 24, 2015 10:24 AM
To: Theodore Garland Jr; Sergio Ferreira Cardoso; R phylo mailing list mailing
list
Subject: Re: [R-sig-phylo] phyres function R package caper
Hi all.
To the original question, you
of the transform models (Pagel's lambda, Grafen's
rho, OU in various implementations, ACDC) can sometimes yield really bizarre
results when you start with a non-ultrametric tree. You need to be careful and
check the REML likelihood surface for multiple peaks, etc.
Cheers,
Ted
Theodore Garland, Jr
, May 14, 2015 8:47 AM
To: Theodore Garland Jr
Cc: Sergio Ferreira Cardoso; R phylo mailing list mailing list
Subject: Re: [R-sig-phylo] Non-ultrametric tree PGLS
Hi Sergio,
I would add to Ted’s reply that you are not only considering alternative
statistical models but that the evolutionary
Do you have a plot of the likelihoods versus the parameter value?
Cheers,
Ted
Theodore Garland, Jr., Professor
Department of Biology
University of California, Riverside
Riverside, CA 92521
Office Phone: (951) 827-3524
Facsimile: (951) 827-4286 (not confidential)
Email: tgarl...@ucr.edu
http
Dear Will,
I suggest that you read the Appendix in this paper Lavin et al. (2008)
(available on my website) and then the original papers by Butler and King on
OUCH, etc.
http://www.jstor.org/stable/10.1086/590395
Cheers,
Ted
Theodore Garland, Jr., Professor
Department of Biology
University
If you get such a large difference between ML and REML estimation in this sort
of situation then probably either (1) something is wrong with the code (bad
search algorithm?) or (2) you have something pathological in your tip data set
and/or the tree (e.g., some really long singleton branches or
In Mesquite, make sure you have the Branches proportional to lengths option
checked so that the tree you are looking at shows the real branch lengths it
has! this is NOT the default option in Mesquite!
Cheers,
Ted
From: R-sig-phylo [r-sig-phylo-boun...@r-project.org] on behalf of Sergio
, you have a different beast. See the appendix noted
above and, for the original source of this sort of model, Grafen (1989).
Cheers,
Ted
Theodore Garland, Jr., Professor
Department of Biology
University of California, Riverside
Riverside, CA 92521
Office Phone: (951) 827-3524
Facsimile: (951) 827
Garland, Jr., Professor
Department of Biology
University of California, Riverside
Riverside, CA 92521
Office Phone: (951) 827-3524
Facsimile: (951) 827-4286 (not confidential)
Email: tgarl...@ucr.edu
http://www.biology.ucr.edu/people/faculty/Garland.html
http://scholar.google.com/citations?hl
have soft polytomies then you may want to subtract some d.f.:
Purvis, A., and T. Garland, Jr. 1993. Polytomies in comparative analyses of
continuous characters. Systematic Biology 42:569–575.
Cheers,
Ted
Theodore Garland, Jr., Professor
Department of Biology
University of California, Riverside
Isn't it in Mesquite?
Cheers,
Ted
Theodore Garland, Jr., Professor
Department of Biology
University of California, Riverside
Riverside, CA 92521
Office Phone: (951) 827-3524
Facsimile: (951) 827-4286 = Dept. office (not confidential)
Email: tgarl...@ucr.edu
http://www.biology.ucr.edu/people
that value and use it for the quadratic
This is referred to as an orthogonol polynomial.
Cheers,
Ted
Theodore Garland, Jr., Professor
Department of Biology
University of California, Riverside
Riverside, CA 92521
Office Phone: (951) 827-3524
Wet Lab Phone: (951) 827-5724
Dry Lab Phone: (951) 827-4026
Good advice!
Cheers,
Ted
From: r-sig-phylo-boun...@r-project.org [r-sig-phylo-boun...@r-project.org] on
behalf of Luke Matthews [lmatth...@activatenetworks.net]
Sent: Tuesday, December 03, 2013 8:29 AM
To: r-sig-phylo@r-project.org
Subject: Re: [R-sig-phylo] best fit vs normality of residuals
somewhere, maybe phytools? Liam
Revell, want to jump in here?
Happy thanksgiving,
Ted
Theodore Garland, Jr., Professor
Department of Biology
University of California, Riverside
Riverside, CA 92521
Office Phone: (951) 827-3524
Wet Lab Phone: (951) 827-5724
Dry Lab Phone: (951) 827-4026
Home Phone
Good point, Joe.
However, if they have graphics screens (as in our PDTREE.EXE and PDSIMUL.EXE)
programs, then you sometimes have trouble with the display of those particular
screens. Plain text screens (ASCII characters only) aren't a problem. Also,
you can get idiosyncratic problem, such as
. As Liam wrote,
we all need more info about what you are doing. And we need to get the hell
off the computer on a holiday!
Cheers,
Ted
From: Liam J. Revell [liam.rev...@umb.edu]
Sent: Thursday, November 28, 2013 12:16 PM
To: Theodore Garland Jr; Anna Rice; r-sig-phylo@r-project.org
Subject
analyses of the
correlated evolution of continuous characters: a simulation study. Evolution
45:534-557.
Cheers,
Ted
Theodore Garland, Jr., Professor
Department of Biology
University of California, Riverside
Riverside, CA 92521
Office Phone: (951) 827-3524
Wet Lab Phone: (951) 827-5724
Dry Lab
Maybe what we need here is an approach based on
simultaneous equations (aka structural equation models), but I'm not
aware whether this exists in a phylogenetic framework.
Exactly! And it will need to incorporate measurement error in all variables
as well as, eventually, uncertainly in the
.
Phylogenetic analysis of covariance by computer simulation. Systematic Biology
42:265-292.
Cheers,
Ted
Theodore Garland, Jr., Professor
Department of Biology
University of California, Riverside
Riverside, CA 92521
Office Phone: (951) 827-3524
Wet Lab Phone: (951) 827-5724
Dry Lab Phone: (951) 827-4026
. 2003. Testing for
phylogenetic signal in comparative data: behavioral traits are more labile.
Evolution 57:717-745.
Cheers,
Ted
Theodore Garland, Jr., Professor
Department of Biology
University of California, Riverside
Riverside, CA 92521
Office Phone: (951) 827-3524
Wet Lab Phone: (951) 827
, is not large for any trait (compare with values
in Blomberg et al. 2003).
Finally, other ways to test for signal besides lambda might perform better,
such as an OU model.
Cheers,
Ted
Theodore Garland, Jr., Professor
Department of Biology
University of California, Riverside
Riverside, CA 92521
Office
, and probably others!
Enough rambling! Hope that helps!!!
Cheers,
Ted
Theodore Garland, Jr., Professor
Department of Biology
University of California, Riverside
Riverside, CA 92521
Office Phone:
(951) 827-3524
Skype: theodoregarland
Facsimile:
(951) 827-4286 = Dept. office (not confidential
al., 2004).
Cheers,
Ted
Theodore Garland, Jr., Professor
Department of Biology
University of California, Riverside
Riverside, CA 92521
Office Phone: (951) 827-3524
Skype: theodoregarland
Facsimile: (951) 827-4286 = Dept. office (not confidential)
Email: tgarl...@ucr.edu
http
).
Cheers,
Ted
From: Alejandro Gonzalez [alejandro.gonza...@ebd.csic.es]
Sent: Wednesday, April 17, 2013 9:38 AM
To: Theodore Garland Jr
Cc: Anne Kempel; r-sig-phylo@r-project.org
Subject: Re: [R-sig-phylo] trait correlations with PICs
Can I risk a question here, maybe a result of ignorance
Yes, we have always used REML for this!
Cheers,
Ted
From: r-sig-phylo-boun...@r-project.org [r-sig-phylo-boun...@r-project.org] on
behalf of Emmanuel Paradis [emmanuel.para...@ird.fr]
Sent: Friday, March 15, 2013 11:21 PM
To: Liam J. Revell; r-sig-phylo-boun...@r-project.org; Alejandro Gonzalez
You can test for anti-signal using the randomization procedures of:
Blomberg, S. P., T. Garland, Jr., and A. R. Ives. 2003. Testing for
phylogenetic signal in comparative data: behavioral traits are more labile.
Evolution 57:717-745.
See page 719.
Cheers,
Ted
Theodore Garland, Jr., Professor
your K value
with other studies that did not use lambda and/or OU transforms.
Cheers,
Ted
Theodore Garland, Jr.
Professor
Department of Biology
University of California, Riverside
Riverside, CA 92521
Office Phone: (951) 827-3524
Wet Lab Phone: (951) 827-5724
Dry Lab Phone: (951) 827-4026
Home
of method used by Collar et al., 2005]
Rezende, E. L., and J. A. F. Diniz-Filho. 2012. Phylogenetic analyses:
comparing species to infer adaptations and physiological mechanisms.
Comprehensive Physiology 2:639-674.
Cheers,
Ted
Theodore Garland, Jr.
Professor
Department of Biology
University
Check this:
Ives, A. R., and T. Garland, Jr. 2010. Phylogenetic logistic regression for
binary dependent variables. Systematic Biology 59:9-26.
Cheers,
Ted
Theodore Garland, Jr.
Professor
Department of Biology
University of California, Riverside
Riverside, CA 92521
Office Phone: (951) 827
by a bunch of mini-star
phylogenies.
Cheers,
Ted
Theodore Garland, Jr.
Professor
Department of Biology
University of California, Riverside
Riverside, CA 92521
Office Phone: (951) 827-3524
Facsimile: (951) 827-4286 = Dept. office (not confidential)
Email: tgarl...@ucr.edu
http://www.biology.ucr.edu
-0.8 in magnitude to
cause serious problems.
Cheers,
Ted
Theodore Garland, Jr.
Professor
Department of Biology
University of California, Riverside
Riverside, CA 92521
Office Phone: (951) 827-3524
Facsimile: (951) 827-4286 = Dept. office (not confidential)
Email: tgarl...@ucr.edu
http
of the PHYSIG
package]
Gartner, G. E. A., J. W. Hicks, P. R. Manzani, D. V. Andrade, A. S. Abe, T.
Wang, S. M. Secor, and T. Garland, Jr. 2010. Phylogeny, ecology, and heart
position in snakes. Physiological and Biochemical Zoology 83:43-54.
Cheers,
Ted
Theodore Garland, Jr.
Professor
of the PHYSIG
package]
Cheers,
Ted
Theodore Garland, Jr.
Professor
Department of Biology
University of California, Riverside
Riverside, CA 92521
Office Phone: (951) 827-3524
Wet Lab Phone: (951) 827-5724
Dry Lab Phone: (951) 827-4026
Home Phone: (951) 328-0820
Facsimile: (951) 827-4286 = Dept
the
likelihood of a model, so particularly check for big outliers.
Cheers,
Ted
Theodore Garland, Jr.
Professor
Department of Biology
University of California, Riverside
Riverside, CA 92521
Office Phone: (951) 827-3524
Wet Lab Phone: (951) 827-5724
Dry Lab Phone: (951) 827-4026
Home Phone: (951
To: Theodore Garland Jr
Cc: Nina Hobbhahn; r-sig-phylo@r-project.org
Subject: Re: [R-sig-phylo] Normality requirement for assessment of lambda with
phylosig (phytools) and fitContinuous (geiger)
Hello,
The library picante in R implements Blomberg et al (2003) K estimate, Liam's
Hobbhahn [n.hobbh...@gmail.com]
Sent: Wednesday, April 25, 2012 9:19 AM
To: Theodore Garland Jr
Cc: Alejandro Gonzalez; Hunt, Gene; Enrico Rezende; r-sig-phylo@r-project.org
Subject: Re: [R-sig-phylo] Normality requirement for assessment of lambda with
phylosig (phytools) and fitContinuous (geiger
It is really too few species to have a sufficiently powerful test for
phylogenetic signal. See Blomberg et al. (2003), available on my website.
Cheers,
Ted
Theodore Garland, Jr.
Professor
Department of Biology
University of California, Riverside
Riverside, CA 92521
Office Phone: (951) 827
Networks, Inc.
Message: 3
Date: Wed, 18 Jan 2012 17:34:14 +0100 (CET)
From: ppi...@uniroma3.it
To: Theodore Garland Jr theodore.garl...@ucr.edu
Cc: r-sig-phylo@r-project.org r-sig-phylo@r-project.org,Ana Longo
ana.lo...@gmail.com
Subject: Re: [R-sig-phylo] Comparing slopes from regressions
Long story short, you don't want to think about it in those terms.
Cheers,
Ted
Theodore Garland, Jr.
Professor
Department of Biology
University of California, Riverside
Riverside, CA 92521
Office Phone: (951) 827-3524
Wet Lab Phone: (951) 827-5724
Dry Lab Phone: (951) 827-4026
Home Phone
phenotypes
withenvironmental characteristics require furtherstudy.
Cheers,Ted
Theodore Garland, Jr.
Professor
Department of Biology
University of California, Riverside
Riverside, CA 92521
Office Phone: (951) 827-3524
Wet Lab Phone: (951) 827-5724
Dry Lab Phone: (951) 827-4026
Home Phone: (951
this is just a limitation
in ACE?
Also, how does ACE handle polytomies? I know that some algorithms have trouble
with polytomies, which may be indicated as zero-length branches.
Cheers,
Ted
Theodore Garland, Jr.
Professor
Department of Biology
University of California, Riverside
Riverside, CA 92521
The methods in the Garland and Ives (2000) paper are in our package of DOS PDAP
programs, and should also be functional in the PDAP module of Mesquite.
Cheers,
Ted
Theodore Garland, Jr.
Professor
Department of Biology
University of California, Riverside
Riverside, CA 92521
Office Phone: (951
: Friday, August 05, 2011 12:38 PM
To: j...@gs.washington.edu
Cc: dwba...@uchicago.edu; hu...@si.edu; Theodore Garland Jr;
r-sig-phylo@r-project.org
Subject: R: Re: R: Re: [R-sig-phylo] R: Re: R: ancestral state reconstruction
for tips
Folks,
I was intending my most recent message to be off-list
39:374-388.
Garland, T., Jr., and A. R. Ives. 2000. Using the past to predict the present:
Confidence intervals for regression equations in phylogenetic comparative
methods. American Naturalist 155:346-364.
Cheers,
Ted
Theodore Garland, Jr.
Professor
Department of Biology
University
and
phylogenetically independent contrasts (which is equivalent to PGLS models
without any sort of branch length transform). Hopefully, results will be
similar. If not, then you probably cannot conclude much from your data.
Sincerely,
Ted
Theodore Garland, Jr.
Professor
Department of Biology
University
the nodes) should be reduced, and sometimes
substantially, if the constrained node is close by. Right?
Cheers,
Ted
Theodore Garland, Jr.
Professor
Department of Biology
University of California, Riverside
Riverside, CA 92521
Office Phone: (951) 827-3524
Wet Lab Phone: (951) 827-5724
Dry Lab Phone
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