[R-sig-phylo] correlation between discrete and continuous variables?

sds21 at duke.edu sds21 at duke.edu
Tue Dec 1 14:17:16 CET 2009

Hi Christoph,
There was some discussion following a similar question a year ago:

The question:

The threads:

I'll be interested to hear what approach you take, so let us (or me anyway)


Quoting Christoph Heibl <christoph.heibl at gmx.net>:

> A question to the comparative method gurus:
> I have a phylogeny for a group of plants that repeatedly evolved  
> annuality from perennial ancestors. For each tip in the tree I have  
> characterized the climatic tolerances (e.g. temperature,  
> precipitation, ...)
> .
> I would like to assess if there is a significant correlation between  
> life cycle (discrete) and climate variables (continuous).
> I am not sure how to start with this and would appreciate your opinion!
> Regards,
> Christoph
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