My apologies in advance if this is obvious.
I have a bar chart with three sets of figures and I would like some space
between the three sets. I cannot seem to find anything in the manual or online
which explains how to separate sets of data.
I tried adding a blank (white bar) with 0 data and that did not work. When I
made the data non zero I got overlapping bars. Basically I want the US/EU/Japan
data slightly set apart. This is the default if I use a speadsheet package.
I must be doing something obviously wrong.
Thank you in advance for your help
Christopher
----------------
#!/usr/bin/env python
import numpy as np
import matplotlib.pyplot as plt
N = 3
_1971 = (120, 130, 70)
_2008 = (400, 370, 180)
_2011 = (350, 350, 140)
# _blank = (100,100,100)
ind = np.arange(N) # the x locations for the groups
width = 0.35 # the width of the bars
plt.subplot(111)
rects1 = plt.bar(ind, _1971, width, color='r')
rects2 = plt.bar(ind+width, _2008, width, color='y')
rects3 = plt.bar(ind+width+width, _2011, width, color='b')
# rects4 = plt.bar(ind+width+width+width, _blank, width, color='w')
plt.ylabel('Annual Expenditure ($bn)')
plt.title('Net Imports')
plt.xticks((ind+(width*1.5)), ('US', 'EU', 'Japan'))
plt.axes().yaxis.grid(True, linestyle='--', which='major', color='grey',
alpha=0.75) # add a grid to the subplot
plt.show()
# plt.savefig('oilbar.pdf')
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