如何在Seaborn FacetGrid中移动传说中的图例?

时间:2016-08-04 17:11:06

标签: python plot seaborn

我有以下代码:

g = sns.FacetGrid(df, row="Type", hue="Name", size=3, aspect=3)
g = g.map(sns.plt.plot, "Volume", "Index")
g.add_legend()
sns.plt.show()

这导致以下情节:

enter image description here

如何在图表外移动图例?

3 个答案:

答案 0 :(得分:4)

您可以通过调整图表大小来完成此操作:

g = sns.FacetGrid(df, row="Type", hue="Name", size=3, aspect=3)
g = g.map(sns.plt.plot, "Volume", "Index")
for ax in g.axes.flat:
    box = ax.get_position()
    ax.set_position([box.x0,box.y0,box.width*0.9,box.height])

sns.plt.legend(loc='center left',bbox_to_anchor=(1,0.5))
sns.plt.show()

示例:

import seaborn as sns

tips = sns.load_dataset('tips')

# more informative values
condition = tips['smoker'] == 'Yes'
tips['smoking_status'] = ''
tips.loc[condition,'smoking_status'] = 'Smoker'
tips.loc[~condition,'smoking_status'] = 'Non-Smoker'

g = sns.FacetGrid(tips,row='sex',hue='smoking_status',size=3,aspect=3)
g = g.map(plt.scatter,'total_bill','tip')
for ax in g.axes.flat:
    box = ax.get_position()
    ax.set_position([box.x0,box.y0,box.width*0.85,box.height])

sns.plt.legend(loc='upper left',bbox_to_anchor=(1,0.5))
sns.plt.show()

结果:

enter image description here

答案 1 :(得分:1)

根据Seaborn文档,您可以将arg legend_out=True添加到通话中,这应该可以解决问题

https://seaborn.pydata.org/generated/seaborn.FacetGrid.html

您的代码将如下所示

g = sns.FacetGrid(df, row="Type", hue="Name", size=3, aspect=3, legend_out=True)
g = (g.map(plt.plot, "Volume", "Index").add_legend())
plt.show()

答案 2 :(得分:0)

根据mwaskom上面的评论,这是OS X中的一个错误。确实切换到另一个后端解决了这个问题。

例如,我将其放入我的matplotlibrc

backend : TkAgg   # use Tk with antigrain (agg) rendering