Seaborn Jointgrid的对数-对数图

问题描述

我正在尝试使用 seaborn JointGrid 对象创建一个日志图，其中包含与每个轴关联的 KDE 和直方图.这使我非常接近，但是直方图箱无法很好地转换为对数空间.有没有一种方法可以轻松做到这一点而不必重新创建边缘轴?

I'm trying to create a loglog plot with a KDE and histogram associated with each axis using a seaborn JointGrid object. This gets me pretty close, but the histogram bins do not translate well into logspace. Is there a way to do this easily without having to recreate the marginal axes?

import seaborn as sns
import matplotlib.pyplot as plt
import numpy as np

data = sns.load_dataset('tips')
g = sns.JointGrid('total_bill', 'tip', data)
g.plot_marginals(sns.distplot, hist=True, kde=True, color='blue')
g.plot_joint(plt.scatter, color='black', edgecolor='black')
ax = g.ax_joint
ax.set_xscale('log')
ax.set_yscale('log')
g.ax_marg_x.set_xscale('log')
g.ax_marg_y.set_yscale('log')

推荐答案

对于日志直方图，我发现使用 np.logspace() .

For log histograms I find generally useful to set your own bins with np.logspace().

mybins=np.logspace(0,np.log(100),100)

然后只需在 _marginals

data = sns.load_dataset('tips')
g = sns.JointGrid('total_bill', 'tip', data,xlim=[1,100],ylim=[0.01,100])
g.plot_marginals(sns.distplot, hist=True, kde=True, color='blue',bins=mybins)
g.plot_joint(plt.scatter, color='black', edgecolor='black')
ax = g.ax_joint
ax.set_xscale('log')
ax.set_yscale('log')
g.ax_marg_x.set_xscale('log')
g.ax_marg_y.set_yscale('log')

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