Seaborn scatterplot legend not showing

Question

I am trying to plot some data with the following code

from sklearn.datasets import make_blobs
import seaborn as sns
import numpy as np

X, y = make_blobs(n_samples=1000, n_features=2, centers=10, cluster_std=1.0, center_box=(-10.0, 10.0), shuffle=True, random_state=None)

palette = np.array(sns.color_palette("bright", 10))  #Chossing color  
sns.scatterplot(X[:,0],X[:,1],legend='full',c=palette[y])

The color is beautiful, but the legend is missing. When I check the documentation, I see:

How to draw the legend. If “brief”, numeric hue and size variables ....

So it seems I also need to include the hue argument. But when I try the hue argument with the following codes, the following graph is created instead...

sns.scatterplot(X[:,0],X[:,1],legend='full',hue=y,c=palette[y])

The legend is showing, but the color is not what I want. After adding the hue argument, it seems it overwrite the palette argument. No matter what palette I choose, the color is still ugly as hell...

My question is: How to show legend while maintaining the color that I want?

Answer 1

You would need to use the palette kwarg, and specify the hues with your y values.

from sklearn.datasets import make_blobs
import seaborn as sns
import matplotlib.pyplot as plt

X, y = make_blobs(n_samples=1000, n_features=2, centers=10, cluster_std=1.0,
                  center_box=(-10.0, 10.0), shuffle=True, random_state=None)

palette = sns.color_palette("bright", 10)  #Choosing color
sns.scatterplot(X[:, 0], X[:, 1], palette=palette, hue=y, legend='full')
plt.show()