It is to visualize a correlation between 2 sets of independent observation with common factors. Details are written at http://tomizonor.wordpress.com/2013/04/29/ellipse-plot/
1. Download the package file
2. Install the package to R using
install.packages('/path/to/downloaded/elliplot_1.1.0.tar.gz', repos=NULL, type='source')
3. Load the package
4. Use and enjoy
See examples at
I already submitted the package to CRAN, and it will be available at CRAN, maybe, in this winter. After that the installation procedure will be smarter.