example of creating a stacked bar plot with error bars using the bar function

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Can you give an example of creating a stacked bar plot with error bars using the bar function? Thank you

May 27, 2019 in Python by Kashish
1,675 views

1 answer to this question.

0 votes

Have a look at this:

import numpy as np
import matplotlib.pyplot as plt

N = 5
menMeans = (20, 35, 30, 35, 27)
womenMeans = (25, 32, 34, 20, 25)
menStd = (2, 3, 4, 1, 2)
womenStd = (3, 5, 2, 3, 3)
ind = np.arange(N)    # the x locations for the groups
width = 0.35       # the width of the bars: can also be len(x) sequence

p1 = plt.bar(ind, menMeans, width, yerr=menStd)
p2 = plt.bar(ind, womenMeans, width,
             bottom=menMeans, yerr=womenStd)

plt.ylabel('Scores')
plt.title('Scores by group and gender')
plt.xticks(ind, ('G1', 'G2', 'G3', 'G4', 'G5'))
plt.yticks(np.arange(0, 81, 10))
plt.legend((p1[0], p2[0]), ('Men', 'Women'))

plt.show()
answered May 27, 2019 by Kunal
why pl[0],p2[0] instead of p1,p2?
p1[0] and p2[0] are used to index the items inside p1 and p2. But honestly, I tried them without specifying indexes. It gives me the same output.

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