When multiple R scripts are used, keep your workspace clean by (http://stackoverflow.com/questions/6190051/how-can-i-remove-all-objects-but-one-from-the-workspace-in-r)
And a full example. Run this at your own risk – it will remove all variables except
x <- 1 y <- 2 z <- 3 ls()  "x" "y" "z" rm(list=setdiff(ls(), "x")) ls()  "x"
Exploring and venting about quantitative issues
Using large digital libraries to advance literary history
Zoom out, zoom in, zoom out.
Blog to document and reflect on Columbia Data Science Class
A Quick-R Companion
[R] + applied economics.
Scientific computing, data viz and general geekery, with examples in R and MATLAB.