New geomorph and RRPP on CRAN

[Adams, Dean [EEOB]]

Colleagues,

 

We are happy to announce that new versions of geomorph and RRPP have been published on CRAN. Please be sure to install both, as they function together.  Installing from Github will also provide the latest updates.

 

With these updates we have adjusted and elevated a few internal functions regarding effect size calculation and other components, but mostly the updates fixed bugs and increased internal function efficiency.  Notably, the ‘box.cox’ function we elevated to principal function a few weeks ago has been replaced by powerTrans, to avoid conflicts with the defunct car::box.cox function.

 

You most likely won’t notice much change, with one exception.  For internal operations, powerTrans might use an initial Yeo-Johnson transformation for values <= 0.  We also found issues with Z-score calculations for statistic ranges between 0 and 1, like those produced with PLS correlation coefficients.  Standardizing these first avoids those issues, but also invokes a Yeo-Johnson transformation.  In the event, older effect sizes are desired, they can still be obtained.  Here is an example:

 

myPLS <- two.b.pls(…)

powerTrans(myPLS$rand.r, …)

 

In other words, users have more freedom to dictate how effect sizes should be calculated.  So, you might notice slight changes in Z-scores, but if you wish to obtain the same Z-scores as before this update, it should be easy to do.

 

Happy computing!

 

Mike and Dean

 

Dr. Dean C. Adams

Distinguished Professor

Director, Ecology and Evolutionary Biology Graduate Program

Department of Ecology, Evolution, and Organismal Biology

Iowa State University

www.public.iastate.edu/~dcadams/

phone: 515-294-3834