boxplot_demo.py

非原创。很好的python例子

#!/usr/bin/python

#
# Example boxplot code
#

from pylab import *

# fake up some data
spread= rand(50) * 100
center = ones(25) * 50
flier_high = rand(10) * 100 + 100
flier_low = rand(10) * -100 
data =concatenate((spread, center, flier_high, flier_low), 0)

# basic plot
boxplot(data)
#savefig('box1')

# notched plot
figure()
boxplot(data,1)
#savefig('box2')

# change outlier point symbols
figure()
boxplot(data,0,'gD')
#savefig('box3')

# don't show outlier points
figure()
boxplot(data,0,'')
#savefig('box4')

# horizontal boxes
figure()
boxplot(data,0,'rs',0)
#savefig('box5')

# change whisker length
figure()
boxplot(data,0,'rs',0,0.75)
#savefig('box6')

# fake up some more data
spread= rand(50) * 100
center = ones(25) * 40
flier_high = rand(10) * 100 + 100
flier_low = rand(10) * -100 
d2 = concatenate( (spread, center, flier_high, flier_low), 0 )
data.shape = (-1, 1)
d2.shape = (-1, 1)
data = concatenate( (data, d2), 1 )

# multiple box plots on one figure
figure()
boxplot(data)
#savefig('box7')

show()