How do I install an R package from source?

Question

A friend sent me along this great tutorial on webscraping NYtimes with R. I would really love to try it. However, the first step is to installed a package called RJSONIO fro

Answer 1

From cran, you can install directly from a github repository address. So if you want the package at https://github.com/twitter/AnomalyDetection:

library(devtools)
install_github("twitter/AnomalyDetection")

does the trick.