//@code
objref r, g, hist, xvec
r = new Random()
r.lognormal(5,2)
n=20
xvec = new Vector(n*3)	// bins look like discrete spikes
for i=0,n-1 {
	xvec.x[3*i] = i-.1
	xvec.x[3*i+1] = i
	xvec.x[3*i+2] = i+.1
}
hist = new Vector(xvec.size())
g = new Graph()
g.size(0, 15, 0, 120)
hist.plot(g, xvec)
for(i=0; i<500; i=i+1){
	x = r.repick()
	print i, x
	j = int(x)
	j = 3*j+1
	if (j >= hist.size()) { // don't let any off the edge
		j = hist.size() -1
	}
	hist.x[j] = hist.x[j]+1
	g.flush()
	doNotify()
}