How to create a horizontal bar graph graphing number ranges?

Question

Does anyone know how to go about creating a horizontal bar graph that graphs number ranges? By which I mean the graphed values do not start at 0 on the x axis 0 and stop at another singular number but instead the values have a start and end values representing a range.

As far as I can see barh is just able to plot singular values instead of range values.

I have been trying to achieve this using matplotlib's barh however I cannot seem to figure out how to make it draw ranges.

Here is an example of what I mean:

Can anyone advise me on how to draw this using matplotlib or another alternative Python module?

Answer 1

First you have to plot the bars you want to see and then you plot a white bar above the others. But this is more a hack than a good solution.

import matplotlib.pyplot as plt
import numpy as np


target_bars_start = [10, 10, 15, 8]
target_bars_end = [15, 23, 16, 10]
N = len(target_bars_end)
ind = np.arange(N)

plt.barh(ind, target_bars_end, 0.35)
plt.barh(ind, target_bars_start, 0.35, color='white')