chickadee » statistics » histogram

histogram sequence breaksprocedure

Computes histogram counts given breakpoints. Returns two values: the bin edges (same as input breaks) and a vector of counts for each bin.

> (let ((breaks (vector 0.5 1.5 2.5 3.5 4.5)))
    (histogram '(1 1 2 2 2 3 3 3 3 4) breaks))
#(0.5 1.5 2.5 3.5 4.5)
#(2 3 4 1)
; 2 values