Matplotlib for Chez Scheme

powerful plotting library built on the popular Matplotlib

(define x (np-arange (int 0) (int 10) (float 0.1)))
(define y (np-sin x))
(plt-plot y)
(plt-show)

(define x (np-linspace (int 0) (int 10) (int 100)))
(define y (np-exp (np-negative x)))
(plt-plot y)
(plt-show)