I have updated the ant package I described yesterday in this blog to add several things

• Now the R code related to <r-set> and <r-run> tasks can either be given as the code attribute or as the text inside the task
• The R code has access to special variables to manipulate the current project (project) and the current task (self) which can be used to set properties, get properties, ...
• The package contains ant ant function so that ant can be invoked using a simple Rscript call, see below

The package now includes a demonstrative build.xml file in the examples directory

Here is the result