Possible Duplicate:
Streamgraphs in R?
I would like to produce a plot like this in R: http://www.nytimes.com/interactive/2008/02/23/movies/20080223_REVENUE_GRAPHIC.html
But instead of movies, I would like to see the evolution of tag usage from the stackexchange site superuser.com over time. I don't mind not being able to interactively click on the different parts of the graphics, a static plot with R will do. Any ideas?
This is not done with R -- have a look at d3, a Javascript library. The NY Times even hired its author, Mike Bostock.
There are also a number of presentations by the NYT Graphics team floating around, see e.g. the Revolutions Blog entry.