Dear all, 

could anyone suggest some examples of R code displaying some very nice 3D plots (with colors, shapes) of the results coming from PCA analyses ? many thanks, 

-- bogdan

If you are planning to give to collaborators, I really like the htmlwidgets package from RStudio, in particular the threejs function, which is easy to add to your rmarkdown document.

Here is a nice tutorial: http://planspace.org/2013/02/03/pca-3d-visualization-and-clustering-in-r/

Or even here in Bioconductor support: PCA-3D Plot