How to decrease the space between grouped bar-subplots in matplotlib?-CodePudding

import matplotlib
import matplotlib.pyplot as plt
import numpy as np

a_means, a_CI = (70, 60), (2.7, 1.9)
b_means, b_CI = (85, 83), (2.6, 1.2)
c_means, c_CI = (66, 64), (3.5, 1.8)

ind = np.arange(2)
width = 0.35

fig, ax = plt.subplots(figsize=(10, 4), facecolor='w', edgecolor='k')
rects1 = ax.bar(ind - 2*width/4, a_means, width/4, yerr=a_CI, label='a')
rects2 = ax.bar(ind - width/4, b_means, width/4, yerr=b_CI, label='b')
rects3 = ax.bar(ind, c_means, width/4, yerr=c_CI, label='c')

ax.set_xticks(ind)
ax.set_ylim([50, 100])
ax.legend(loc='upper center', bbox_to_anchor=(0.5, -0.1),
          fancybox=True, shadow=True, ncol=3)

plt.show()

This is what I get: old

This is what I want to get: new

Any ideas how I can achieve this? Thank you in advance!

CodePudding user response：

You can change ind = np.arange(2) to something like:

ind = np.arange(2) / 2.5

Play with the number, then you can eventually change tick labels if they don't satisfy your needs.

CodePudding user response：

Make the bars wider (you can do this easily since you already have a width variable for this) and the figure size narrower:

width = 1

fig, ax = plt.subplots(figsize=(6, 4), facecolor='w', edgecolor='k')