外线 Seaborn violinplot/boxplot [英] Outer lines Seaborn violinplot/boxplot

问题描述

我正在使用 Seaborn 库中的 violinplot 函数.有时外线是可视化的:

I am using the violinplot function from the Seaborn library. Sometimes the outer lines are visualized:

有时它们不是:

这些示例基于相同的代码，运行时间不同:

These examples are based on the same bit of code, running different times:

  df = pd.DataFrame(np.random.randn(100, 4), columns=list('ABCD'))
  sns.violinplot(data=df, order=list(df.columns), cut=0,inner='points', bw='silverman', split=True, color='limegreen')
  plt.show()

如何操作外线的格式?

推荐答案

感谢 Serenity 指出这是由于 matplotlib 错误(请参阅此报告的问题).

Credits to Serenity for pointing out that this is due to a matplotlib bug (see this reported issue).

可以使用以下函数解决:

It can be solved by using the following function:

def patch_violinplot():
     from matplotlib.collections import PolyCollection
     ax = plt.gca()
     for art in ax.get_children():
          if isinstance(art, PolyCollection):
              art.set_edgecolor((0.3, 0.3, 0.3))

修复示例可以通过以下方式完成:

Fixing the example can be done by:

df = pd.DataFrame(np.random.randn(100, 4), columns=list('ABCD'))
sns.violinplot(data=df, order=list(df.columns), cut=0,inner='points', bw='silverman', split=True, color='limegreen')
patch_violinplot()
plt.show()

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