Currently, I am learning how to create bar charts using matplotlib by following a tutorial. The link to the tutorial is:
import numpy as np
import matplotlib.pyplot as plt
data = [[5., 25., 50., 20.],
[4., 23., 51., 17.],
[6., 22., 52., 19.]]
color_list = ['b', 'g', 'r']
gap = .8 / len(data)
for i, row in enumerate(data):
X = np.arange(len(row))
plt.bar(X + i * gap, row,
width = gap,
color = color_list[i % len(color_list)])
plt.show()
I have successfully implemented the code from the tutorial but I am now encountering difficulties in modifying the x-axis values or xticks to display dates.
plt.xticks(['11-2019', '12-2019', '01-2020'])
The specific error message I am receiving is:
in convert_units f'units: {x!r}') from e matplotlib.units.ConversionError: Failed to convert value(s) to axis units: ['11-2019', '12-2019', '01-2020']
If anyone has experience with this issue and knows how to replace the x-axis values with dates, your help would be greatly appreciated.