The authors say that their goal is use the potential of Lisp for statistics and graphics. The seamless intergration of Clojure with Java lets the authors easily use the numerous Java libraries for their purpose. They also say that they have been inspired by Luke Tierney's Xlispstat.
Technical information: Incanter is a Clojure-based computing and graphics environment for the Java Virtual Machine. At the core of Incanter are the Parallel Colt numerics library, a multithreaded version of Colt, and the JFreeChart charting library, and other Java and Clojure libraries.
A simple code example
(use '(incanter core stats charts)) (view (histogram (sample-normal 1000)))