File: scatter_demo.py

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matplotlib 0.99.3-1
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#!/usr/bin/env python
from pylab import *

N = 30
x = 0.9*rand(N)
y = 0.9*rand(N)
area = pi*(10 * rand(N))**2 # 0 to 10 point radiuses
scatter(x,y,s=area, marker='^', c='r')

show()