seaborn 中的补丁 [英] Patches in seaborn

问题描述

我的目的是在 seaborn 的 lmplot 中的特定坐标处添加一个补丁:

My intention is to add a patch at a specific coordinate in seaborn's lmplot :

无论如何要向 lmplot 添加矩形/正方形补丁吗?

Is there anyway to add a rectangular/square patch to lmplot?

我能够通过 sns.lmplot() 打印出绘图.但是当我尝试使用带有相关坐标的 ax.add_patch() 语句添加矩形补丁时，它出错了.

I was able to get the plot printed out through sns.lmplot(). But when I try to add the rectangular patch using ax.add_patch() statement with relevant coordinate's, it error's out.

#Sample code to generate lmplot  and add patch   
ax= sns.lmplot('A', 'B', hue="group", data=res_me,fit_reg=False, \
              palette="Set1",size=10, aspect=1, scatter_kws={"s": 100,"linewidths":2,"edgecolor":"black"})

ax.add_patch(patches.Rectangle((0.912, 0.72), 1.02, .802,fill=False,edgecolor='green',lw=3))

我收到以下错误.

AttributeError: 'FacetGrid' object has no attribute 'add_patch'

那么我们可以为 FacetGrid 添加补丁吗?

So can we add patches to FacetGrid ?

推荐答案

lmplot 如您所学，返回一个 FacetGrid，它将所有轴存储在一个axes 属性作为 2D numpy 数组.

lmplot as you've learned, returns a FacetGrid, which stores all of its axes in an axes property as a 2D numpy array.

所以您只需要执行以下操作:

So you just need to do something like:

fg = sns.lmplot('A', 'B', hue="group", data=res_me,fit_reg=False,
              palette="Set1",size=10, aspect=1,
              scatter_kws={"s": 100,"linewidths":2,"edgecolor":"black"})

fg.axes[0, 0].add_patch(patches.Rectangle((0.912, 0.72), 1.02, 
                        0.802,fill=False,edgecolor='green',lw=3))

请注意，如果您的 FacetGrid 只有一个 Axes 对象，您可以直接使用 fg.ax

Note that if your FacetGrid only has one Axes object in it, you can access it directly with fg.ax

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