Doughnut chart in R with googleVis

The guys at Google continue to update and enhance the Chart Tools API . One new recent feature is a pie chart with a hole, or as some call ...

Create an R package from a single R file with roxyPackage

Documenting code can be a bit of a pain. Yet, the older (and wiser?) I get, the more I realise how important it is. When I was younger I sai...