Combining a bar plot and a line plot in matplotlib without shifting the bar plot

Question

I am looking for a way to combine a bar and a line plot, without the bar plot shifting when the line plot is added.

The following code is used to generate the barplot

import matplotlib.pyplot as plt
import pandas as pd
data = pd.DataFrame([[4,30,0,3,2,2,], [5,24,0,3,1,1,], [6,34,0,4,2,1], [7,18,0,2,1,1], [8,34,0,3,3,2]], columns=['t', 'Cost', 0,1,2,3])
data[[1,2,3]].plot(kind='bar')

Thus, the data looks as follows

and the following plot is generated:

Next, I add the cost information using

data['Cost'].plot(style='o--', c='black', secondary_y=True)

Running it all together returns the following graph:

The issue is that the outer bars are no longer visible. I tried changing the range on the x-axis with xlim, but that did not help, it only made it worse. There is probably an easy fix for it, which I have not been able to find anywhere online.

mozway · Accepted Answer · 2021-08-11 08:44:09Z

2

I don't have the issue, running your code:

That said, an easy fix is to run ax.set_xlim(-0.5, 4.5)

answered Aug 11, 2021 at 8:44

mozway

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2 Comments

Student NL Over a year ago

Interesting, because I do have this issue. Could it be due to any of the default settings related to plotting, because I do not get the figure you showed.

mozway Over a year ago

I forgot, if ax is not defined use plt.gca().set_xlim(...)

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