如何使用 Seaborn 手動添加圖例

Question

我想手動將legends添加到我的Seaborn plot 。

例如，下圖是我嘗試手動添加圖例的圖：

我想添加一個圖例：

{
"1":"High efficiency",
"2": "High performance",
"3": "Effective performance",
"4": "Relatively low speed",
"5": "Reduce performance",
"6": "Not recommeneded"
}

Answer 1

嘗試：

import seaborn as sns
import matplotlib.patches as mpatches

x=[1,1000,1001]
y=[200,300,400]
sns.set_context(rc={"figure.figsize": (8, 4)})
nd = np.arange(3)
width=0.8
plt.xticks(nd+width/2., ('1','1000','1001'))
plt.xlim(-0.15,3)

ax = sns.barplot(x=x,y=y)
colors = ['r', 'g', 'b']

labels = {
    1:'x',
    1000:'y',
    1001:'z'
}
handles = []
for col, lab, patch in zip(colors, x, ax.axes.patches):
    patch.set_color(col)
    handles.append(mpatches.Patch(color=col, label=labels[lab]))

ax.legend(handles=handles) 
plt.show()