我想用Seaborn.kdeplot创建一个Kernel-Density-Estimation,旁边有一个颜色条。
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()
在创建内核密度估算时,我不知道如何创建颜色条。我试过用 plt.colorbar() 没有成功。
答案 0 :(得分:5)
你必须直接调用scipy KDE和matplotlib轮廓函数,但它只是一些额外的代码:
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)
答案 1 :(得分:2)