Plot over Seaborn plot and add legend

Question

See the code below. I create a plot with seaborn then I plot some other values over the same figure with plt.plot, works fine, but the plt.legend method apparently is not additive, that is, I cannot use it to label both lines in the chart, which would be 'from seaborn' and 'from plt', both associated with the proper line color.

import numpy as np
import matplotlib.pyplot as plt
import seaborn as sns
mean, cov = [0, 2], [(1, .5), (.5, 1)]
data_sample, y = np.random.multivariate_normal(mean, cov, size=100).T
data_min = min(data_sample)
data_max = max(data_sample)
plot_points = [(data_min + (i/100) * (data_max-data_min)) for i in range(0, 100)]
sns.set(color_codes=True)
plt.figure()
ax = sns.kdeplot(data_sample, legend='from seaborn')
ax.plot(plot_points, y)
plt.legend(['from plt'])
plt.show()

How can I address this?

Try ax = sns.kdeplot(..., label='from seaborn'); ax.plot(..., label='from plot') and plt.legend() without parameters — JohanC
– JohanC, Commented May 26, 2020 at 17:49

Quang Hoang · Accepted Answer · 2020-05-26 18:55:13Z

2

Change legend to label and add label to plot:

ax = sns.kdeplot(data_sample, label='from seaborn')
ax.plot(plot_points, y, label='from plt')
ax.legend()

Output:

edited May 26, 2020 at 18:55

answered May 26, 2020 at 18:05

Quang Hoang

151k11 gold badges64 silver badges86 bronze badges

Sign up to request clarification or add additional context in comments.

2 Comments

Mefitico Over a year ago

As you've posted it doesn't work for me. It happened along with calling plt.legend() without parameters, as @JohanC suggested. Did you exclude the plt.legend call? If not, consider editing your answer to mention it, then I'll accept it.

Quang Hoang Over a year ago

I used ax.legend() instead of plt.legend(). See update. But plt.legend() also work for me. Both without any parameters.

Collectives™ on Stack Overflow

Plot over Seaborn plot and add legend

1 Answer 1

2 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

2 Comments

Your Answer

Sign up or log in

Post as a guest

Related