I've loved using many of your functions from affycoretools for gene expression data from any technology. However, after upgrading to R 3.2.0, it appears in the newest version of affycoretools (v. 1.40.0), the plotPCA function can no longer do a 3D plot? Did you have to remove this because plotPCA is now a BiocGenerics function? Is there perhaps an alternative function? I've always used the 2D and 3D plots in combination and found them to be a very useful tool, so I'm sad to lose the easy 3D functionality.