R code for creating 3D barplots.
3dbarplot.R is explained in this blog post here: http://www.cpwardell.com/2015/07/01/stop-the-madness-no-more-pie-charts/
sequencecontext_3dbarplot.R and snvspermegabase.txt are explained in this blog post here: http://www.cpwardell.com/2015/08/28/legoplots-in-r-3d-barplots-in-r/