#!/usr/bin/env python
# a bar plot with errorbars
from matplotlib.matlab import *
N = 5
menMeans = (20, 35, 30, 35, 27)
menStd = (2, 3, 4, 1, 2)
ind = arange(N) # the x locations for the groups
width = 0.35 # the width of the bars
p1 = bar(ind, menMeans, width, color='r', yerr=menStd)
womenMeans = (25, 32, 34, 20, 25)
womenStd = (3, 5, 2, 3, 3)
p2 = bar(ind+width, womenMeans, width, color='y', yerr=womenStd)
ylabel('Scores')
title('Scores by group and gender')
set(gca(), 'xticks', ind+width)
set(gca(), 'xticklabels', ('G1', 'G2', 'G3', 'G4', 'G5') )
set(gca(), 'xlim', [-width,len(ind)])
set(gca(), 'yticks', arange(0,41,10))
legend( (p1[0], p2[0]), ('Men', 'Women') )
#axis([-10, 10, -10, 100])
#savefig('barchart_demo')
show()
