Colorbar for seaborn.kdeplot
<p>I want to create a Kernel-Density-Estimation with Seaborn.kdeplot with a colorbar on the side.</p>

<pre><code>import matplotlib.pyplot as plt
import seaborn as sns
import numpy as np; np.random.seed(10)
import seaborn as sns; sns.set(color_codes=True)
mean, cov = [0, 2], [(1, .5), (.5, 1)]
x, y = np.random.multivariate_normal(mean, cov, size=50).T
sns.kdeplot(x,y,shade=True)
plt.show()
</code></pre>

<p>While the Kernel-Density-Estimation is created, I do not have a clue how to create the colorbar. I tried using
    plt.colorbar() 
without success. </p>

<p>You'll have to call the scipy KDE and matplotlib contour function directly, but it's just a bit of extra code:</p>

<pre><code>import matplotlib.pyplot as plt
import seaborn as sns
import numpy as np; np.random.seed(10)
import seaborn as sns; sns.set(color_codes=True)
from scipy import stats

mean, cov = [0, 2], [(1, .5), (.5, 1)]
data = np.random.multivariate_normal(mean, cov, size=50).T

kde = stats.gaussian_kde(data)
xx, yy = np.mgrid[-3:3:.01, -1:4:.01]
density = kde(np.c_[xx.flat, yy.flat].T).reshape(xx.shape)

f, ax = plt.subplots()
cset = ax.contourf(xx, yy, density, cmap="viridis")
f.colorbar(cset)
</code></pre>

<p><a href="http://i.stack.imgur.com/3Zwqg.png" rel="nofollow"><img src="http://i.stack.imgur.com/3Zwqg.png" alt="enter image description here"></a></p>

python matplotlib seaborn colorbar kernel-density