Hexbin
The following code:
import gr
import math, random
let n = 100000
var x = newSeq[float](n)
var y = newSeq[float](n)
for i in 0..<n:
x[i] = rand(1.0)
y[i] = rand(1.0)
hexbin(x,y)
discard readLine(stdin)
grm_finalize()
creates the following window:
