hist_and_pdf_line.clj

(use '(incanter core stats charts))

;; Overlay a xy-plot on a histogram 

;; Plot a histogram of a normal sample of size 1000, using the :density option
;; so that the y-axis represents density instead of the default frequency.
;; Then plot a pdf curve for the normal distribution on the same chart.

(def x (range -3 3 0.01))
(doto (histogram (sample-normal 1000) :density true)
      (add-lines x (pdf-normal x))
      view)