labels of pandas dataframe in histogram plot

[kinyatoride]

Description

When pandas dataframe is passed to hist, the labels are shown in x axis. Can we put them to legend labels instead?

Steps to reproduce

import numpy as np
import pandas as pd
import proplot as plot

rng = np.random.default_rng()
x = rng.standard_normal((500, 2))
x = pd.DataFrame(x, columns=['a', 'b'])

fig, ax = plot.subplots()
ax.hist(x)

plot.show()

Expected behavior: [What you expected to happen]
Show actual x values, rather than showing labels in x axis.

Actual behavior: [What actually happened]

Equivalent steps in matplotlib

import numpy as np
import matplotlib.pyplot as plt

rng = np.random.default_rng()
x = rng.standard_normal((500, 2))
x = pd.DataFrame(x, columns=['a', 'b'])

fig, ax = plt.subplots()
ax.hist(x['a'], label='a')
ax.hist(x['b'], label='b')
ax.legend()
plt.show()

Proplot version

0.6.4

[lukelbd]

Fixed by b5c3ec4:

import numpy as np
import pandas as pd
import proplot as plot

rng = np.random.default_rng()
x = rng.standard_normal((500, 2))
x = pd.DataFrame(x, columns=['a', 'b'])
bins = np.linspace(-4, 4, 17)

fig, ax = plot.subplots()
ax.hist(x, bins, legend=True, alpha=0.5)
ax.format(suptitle='Histogram example')