R is a statistical computing language that is widely used for data exploration, machine learning, and predictive modeling. In addition to core statistical features, it includes a large repository of packages that implement the vast majority of algorithms used in data science.
The R language was not designed for distributed computing, so R programs are almost always run on a single machine. However, R's wide selection of algorithms and high-quality visualization toolkits make it very valuable for working with small- to medium-sized datasets.
Mortar has built-in support for running R scripts inside data pipelines. You can use R to create visualizations, run machine learning algorithms, or compute statistics on your data.