在matplotlib站點有一個

example.基本上,你只是按照寬度移動x值.這里是相關的位：

import numpy as np

import matplotlib.pyplot as plt

N = 5

menMeans = (20, 35, 30, 35, 27)

menStd = (2, 3, 4, 1, 2)

ind = np.arange(N) # the x locations for the groups

width = 0.35 # the width of the bars

fig = plt.figure()

ax = fig.add_subplot(111)

rects1 = ax.bar(ind, menMeans, width, color='r', yerr=menStd)

womenMeans = (25, 32, 34, 20, 25)

womenStd = (3, 5, 2, 3, 3)

rects2 = ax.bar(ind+width, womenMeans, width, color='y', yerr=womenStd)

# add some

ax.set_ylabel('Scores')

ax.set_title('Scores by group and gender')

ax.set_xticks(ind+width)

ax.set_xticklabels( ('G1', 'G2', 'G3', 'G4', 'G5') )

ax.legend( (rects1[0], rects2[0]), ('Men', 'Women') )

plt.show()

總結

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