last bar is hiding behind in pandas grouped bar plot-CodePudding

I am plotting a grouped bar plot out of the data:

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

df = pd.DataFrame({'x':[0.716468, 0.799652, 0.611284, 0.700020, 0.745372, 0.717280, 0.212407, 0.225291, 0.443395, 0.649912, 0.756463, 0.588992],
'y':[1.891988, 2.750937, 4.495497, 5.260436, 6.100882, 6.262784, 7.339279, 6.877465, 6.349050, 4.797649, 3.290293, 2.106541],
'x_err':[0.022882, 0.021447, 0.009402, 0.011324, 0.008872, 0.015882, 0.009615, 0.007617, 0.012816, 0.010310, 0.009213, 0.020137],
'y_err':[0.156298, 0.151681, 0.178215, 0.143700, 0.137071, 0.133951, 0.209588, 0.185246, 0.214665, 0.214598, 0.163624, 0.132138]})

with the following code:

fig, ax = plt.subplots()

width = 0.35

df['x'].plot(kind = 'bar',ax = ax ,width = width, position = 0 , yerr = df['x_err'],color = 'red',use_index = True)
ax.set_ylabel('X')

ax1= ax.twinx()

df['y'].plot(kind = 'bar',ax = ax1 ,width = width, position = 1 , yerr = df['y_err'],color = 'blue',use_index = True)
ax1.set_ylabel('Y')
plt.show()

and got the following plot:

The plot is okay except for the red bar in the last group i.e. group bar 11 (shown by arrow) only appears half. I know that after reducing the width I can visualize it. The problem is the bars become thin, which I do not want. As you can see, there is still plenty of gap between two successive groups, I want to reduce the gap and accommodate all bars clearly.

Any help would be highly appreciated.

CodePudding user response：

That's due to the fact that you modify the position of the bars with position. Try adjusting xlims:

# other plotting functions
# ...

xlims = ax1.get_xlim()
ax1.set_xlim(xlims[0], xlims[1]   width)
plt.show()

Output: