Markdown and Latex combined with the R statistical scripting language are a popular solution to generate documents with figures. It can be a huge productivty booster to be able to both model and report at the same time.
Nonetheless it's likely one day that you will come across a situation where you will need to programatically generate cells of code. There is a recent feature in the knitr package that provides basic component templating that I will walk readers through in this tutorial.