Here's a little more info that may be relevant: the tree is not supposed to have negative dates. Although when I do is.ultrametric(tr) I get FALSE, I have always been just ascribing that to lack of precision, in part because it has never been a problem with OUwie().
*--* *Rafael Sobral Marcondes* PhD Candidate (Systematics, Ecology and Evolution/Ornithology) Museum of Natural Science <http://sites01.lsu.edu/wp/mns/> Louisiana State University 119 Foster Hall Baton Rouge, LA 70803, USA Twitter: @brown_birds <https://twitter.com/brown_birds> On Wed, May 2, 2018 at 1:08 PM Rafael S Marcondes <raf.marcon...@gmail.com> wrote: > Hi all, > > I need some help with a warning message I've been getting when running > parametric bootstrapping in OUwie. > > >OUwie.boot(nboot=1, simmap.tree=F...) > Beginning parametric bootstrap -- performing 1 replicates > Warning: Some dates are negative? rootAge may be incorrectly defined or > you are using a time-scaling method that warps the tree, like aba or zbla. > Initializing... > Finished. Begin thorough search... > Finished. Summarizing results. > > Initially I didn't give it much thought, but my bootstrapping results are > quite unexpected, and I'm starting to think that may be related to that > warning. > > I don't get that warning when I run OUwie() with the same > tree/dataset/settings, and I've been able to trace it to the function > dateNodes in the package paleotree, but haven't been able to go any further > than that. > > Thanks in advance for any help! > > > > *--* > *Rafael Sobral Marcondes* > PhD Candidate (Systematics, Ecology and Evolution/Ornithology) > > Museum of Natural Science <http://sites01.lsu.edu/wp/mns/> > Louisiana State University > 119 Foster Hall > Baton Rouge, LA 70803, USA > > Twitter: @brown_birds <https://twitter.com/brown_birds> > > [[alternative HTML version deleted]] _______________________________________________ R-sig-phylo mailing list - Remail@example.com https://stat.ethz.ch/mailman/listinfo/r-sig-phylo Searchable archive at http://firstname.lastname@example.org/