Hi Jon,

I also looked for that with no success. There are other tests on modality, like the dip test that you can do with R, but I was not convinced.

a couple of references may give the required parameters as in https://cran.r-project.org/web/packages/unmarked/vignettes/unmarked.pdf or or https://cran.r-project.org/web/packages/detect/detect.pdf A specific code for toshi's one is discussed in http://lists.r-forge.r-project.org/pipermail/vegan-commits/2010-August/001045.html.

Hi Stefano. Thanks for the feedback. Hopefully we can find a solution.

Hi Guido. Thanks for the info. I'll have a look into it. I quickly skimmed the vegan link and saw it referred to the MOS test. I wondered if that may be a partial solution at least.

this is not my desk!

Interesting response! :)

Hi Jonathan..maybe this paper can help you.

http://www.esajournals.org/doi/pdf/10.1890/ES10-00074.1

Good luck....

Ask Jarrett Byrnes at Umass Boston.

Hi Patricio and Mark. Thanks a lot for the suggestions. I'll look into them both.