[R-sig-phylo] Running R on a Computer Cluster in the Cloud - cloudnumbers.com

2011-07-13 Thread Markus Schmidberger
Dear phylogenetic and comparative methods experts, cloudnumbers.com provides researchers and companies with the resources to perform high performance calculations in the cloud. As cloudnumbers.com's community manager I may invite you to register and test R on a computer cluster in the cloud for

Re: [R-sig-phylo] cut a tree in a given time interval

2011-07-13 Thread Nick Matzke
Oops, left that out. Here it is as text and an attached file. You will have to do library(ape) and maybe library(phangorn) ...ahead of time (hopefully not others...) chainsaw - function(tr, timepoint=10) { # Take a tree and saw it off evenly across a certain

[R-sig-phylo] pic() vs gls()

2011-07-13 Thread Nicholas Mason
Dear R-sig-phylo users,I have a question regarding comparative analyses of contrasts done with the functions fitContinuous() and pic() compared to using PGLS (using the gls() function).From my understanding the first method involving pic() below fits alpha (estimated using fitContinuous()) to each

Re: [R-sig-phylo] pic() vs gls()

2011-07-13 Thread Liam J. Revell
Hi Nick. For your first (simple) problem, I believe you want to do: read.csv(file=Mason_data.csv,row.names=1)-smdata Regarding the more complicated issue, the problem of non-independence in linear regression comes in the residual error of the model. Thus, you should fit a correlation

Re: [R-sig-phylo] Assigning node ages to a tree, revisited

2011-07-13 Thread Scott Chamberlain
Hi Roger, Can you provide a reproducible example (perhaps a subset of your tree and their tip and node ages if the tree is very large)? I don't know what the problem could be without the data, but perhaps Gene knows? Scott On Wednesday, July 13, 2011 at 10:57 PM, Roger Close wrote: Hello