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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