在swarmplot上绘制另一点 [英] Plot another point on top of swarmplot

问题描述

我想像这样在swarmplot上绘制一个突出显示的点

I want to plot a "highlighted" point on top of swarmplot like this

swarmplot没有y轴，所以我不知道如何绘制该点。

The swarmplot don't have the y-axis, so I have no idea how to plot that point.

import seaborn as sns
sns.set(style="whitegrid")
tips = sns.load_dataset("tips")
ax = sns.swarmplot(x=tips["total_bill"])

推荐答案

了解要突出显示的数据点的索引后，它应该可以工作-尽管如果在单个轴实例上有多个swarmplot，它将变得稍微复杂一些。 / p>

This approach is predicated on knowing the index of the data point you wish to highlight, but it should work - although if you have multiple swarmplots on a single Axes instance it will become slightly more complex.

import matplotlib.pyplot as plt
import matplotlib
import seaborn as sns
sns.set(style="whitegrid")
tips = sns.load_dataset("tips")
ax = sns.swarmplot(x=tips["total_bill"])
artists = ax.get_children()
offsets = []
for a in artists:
    if type(a) is matplotlib.collections.PathCollection:
        offsets = a.get_offsets()
        break
plt.scatter(offsets[50,0], offsets[50,1], marker='o', color='orange', zorder=10)

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