回答編集履歴
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追記
test
CHANGED
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@@ -14,3 +14,29 @@
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ax.legend(handles=handles, labels=["-","/","+","0","1","2"], ncol=2, title="H_Type S_Type")
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```
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---
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追加の質問に関して。
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存在しないデータのlegendを追加しないといけないので、まじめにやるなら [https://matplotlib.org/stable/gallery/text_labels_and_annotations/custom_legends.html](https://matplotlib.org/stable/gallery/text_labels_and_annotations/custom_legends.html) あたりを参考にして、対応するマーカーを作って、handlesに設定してやればできます。
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簡単にするなら、ダミーデータを追加してプロットすれば、legendに出せるようになります。
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```python
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import seaborn as sns
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import matplotlib.pylab as plt
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x=["a","b","c","d","e","f"]
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y=[1,2,3,4,5,6]
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h=[0,0,0,0,0,0]
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s=[10,20,10,10,20,20]
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x2 = x + [None] * 3
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y2 = y + [None] * 3
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h2 = h + [-1, 0, 1]
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s2 = s + [10, 20, 40]
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sizes = {x: x for x in s2}
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colp = {-1:'#1F3FDF', 0:'#222222', +1:'#DF1F3F'}
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ax = sns.scatterplot(x=x2, y=y2, hue=h2, size=s2, sizes=sizes, palette=colp, legend="full")
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handles, labels = ax.get_legend_handles_labels()
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ax.legend(handles=handles, labels=["-","/","+","0","1","2"], ncol=2, title="H_Type S_Type")
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```
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