Thank you for the thorough and informative response.  For the record, I 
checked with Chris Klingenberg and he confirmed that MorphoJ calculates 
PICs along each dimension individually as well. I think I'll opt for this 
method over the McPeek procedure. 

Much appreciated,

On Tuesday, March 27, 2018 at 11:02:10 AM UTC-7, Sarah Friedman wrote:
> Hi all, 
> Primarily, I'm wondering if there is a way to calculate phylogenetic 
> independent contrasts on multivariate shape data in R. However if no R 
> method exists, I know a method to do this is implemented in MorphoJ, and I 
> could possibly code an analogous method in R but I'm unsure how the 
> contrasts are calculated. Does anybody know if the independent contrasts 
> are calculated using the method described in McPeek (1994), the Euclidean 
> distances between contrasts on each branch, or another method? 
> Thanks, 
> Sarah

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