回答編集履歴
2
コメントを受けて回答を修正
test
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@@ -81,3 +81,77 @@
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---
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**【追記】**
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Y軸の値に3桁区切りをつけるには、（もう一つの質問で回答した）`FuncFormatter()` で変換するのが簡単です。
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```Python
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plt.gca().get_yaxis().set_major_formatter(ticker.FuncFormatter(lambda v,p: f'{int(v):,d}'))
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```
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修正済みサンプルコード
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```
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import pandas as pd
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import numpy as np
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import matplotlib.pyplot as plt
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import matplotlib.ticker as ticker
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N = 10
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x = pd.date_range('2020/1/1 0:00', periods=N, freq='1d')
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y = np.random.randint(10,100,N) * 1000
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y2 = np.random.randint(10,100,N) * 1000
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left = np.arange(N)
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height1 = y
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height2 = y2
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labels = x.date
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width = 0.4
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plt.xticks(x, rotation=90)
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plt.bar(left, height1, color='r', width=width, align='center',label='y')
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plt.bar(left+width, height2, color='b', width=width, align='center',label='C')
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plt.legend(loc = 'upper right')
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plt.xticks(left + width/2, labels)
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plt.gca().get_yaxis().set_major_formatter(ticker.FuncFormatter(lambda v,p: f'{int(v):,d}'))
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plt.tight_layout()
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plt.show()
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```
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1
サンプルに余分なinportがあったので削除
test
CHANGED
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@@ -31,8 +31,6 @@
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import numpy as np
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import matplotlib.pyplot as plt
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import matplotlib.dates as mdates
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