An issue that I have come across is that if we transform the phylogeny according to a multi-optimum OU model, will the unit tree still be ultrametric??
I am trying to figure this out b/c we look at the slope of the contrasts ~ branching.time, which might be messed up when using non-ultrametric trees as ape's branching.times() fxn returns negative values in this case. This statistic should still work but I may need to replace the branching.times fxn.
richfitz
commented
10 years ago
Issue by richfitz from Wednesday Sep 25, 2013 at 04:21 GMT Originally opened as https://github.com/richfitz/modeladequacy/issues/1
An issue that I have come across is that if we transform the phylogeny according to a multi-optimum OU model, will the unit tree still be ultrametric?? I am trying to figure this out b/c we look at the slope of the contrasts ~ branching.time, which might be messed up when using non-ultrametric trees as ape's branching.times() fxn returns negative values in this case. This statistic should still work but I may need to replace the branching.times fxn.