What does: min(tree$edge.length) say?

Eliot

On Wed, May 2, 2018 at 2:22 PM, Rafael S Marcondes <raf.marcon...@gmail.com>
wrote:

> 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>
> >
> >
>
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>
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