Separate two groups of bars in matplotlib

Question

Do you know if it is possible to separate the bars into two groups of different sizes, but maintaining both in the same plot? I have this code:

import matplotlib.pyplot as plt; plt.rcdefaults()
import numpy as np
import matplotlib.pyplot as plt

objects = ('A', 'B', 'C', 'D', 'E', 'F', 'G')
y_pos = np.arange(len(objects))
performance = [15.3, 25.8, 37.1, 50.0, 15.0, 18.5, 28.9]
plt.bar(y_pos, performance, align='center', alpha=0.5)
plt.xticks(y_pos, objects)
plt.ylabel('Reduction Error')
plt.title("")

plt.show()

And I would like to have A and B close together, then some space, and then all the other bars. I found this issue Function to create grouped bar plot, but I would like to keep each name under the bar and not group them as in the example. Thank you for your help!

It would help if you could make a mock up sketch of what you're after — Dan, Nov 13 '18 at 11:52

Joe · Accepted Answer · 2018-11-13T11:42:22.027

1

If I understood you correctly, you can do in this way:

objects = ('A', 'B', 'C', 'D', 'E', 'F', 'G')
x = [1,1.8,5,6,7,8,9]
performance = [15.3, 25.8, 37.1, 50.0, 15.0, 18.5, 28.9]

plt.bar(x, performance, align='center', alpha=0.5)
plt.xticks(x, objects)
plt.ylabel('Reduction Error')
plt.title("")
plt.show()

Or use 2 instead of 1.8 in x to have some space between A and B

edited Nov 13 '18 at 11:42

answered Nov 13 '18 at 11:32

Joe

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Yes! This is exactly what I meant! Thank you so much! – Maria Nov 17 '18 at 11:28

Separate two groups of bars in matplotlib

1 Answers1