#!/usr/bin/env python from pylab import * N=1000 props = dict( alpha=0.5, edgecolors='none' ) handles = [] colours = ['red', 'green', 'blue', 'magenta', 'cyan', 'yellow'] colours = ['red', 'green', 'blue'] for colour in colours: x, y = rand(2,N) s = 400.0 * rand(N) handles.append(scatter(x, y, c=colour, s=s, **props)) legend(handles, colours) grid(True) show()