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[英]How can I fix 'openCV has no attribute VideoCapture' in python
[英]How can I fix data frame has no attribute plot
dd=df.select(df.Color,df.ListPrice.cast("float"))
colordf = dd[['Color','ListPrice']]
colordfgroup = colordf.groupby('Color').mean('ListPrice')
colordfgroup.show()
my_plot = colordfgroup.plot(kind='bar')
它告訴我 DataFrame 沒有屬性 plot。
所有數據幀類型都是字符串。
我評論了 colordfgroup.show() 行並修正了平均計算
dd=df.select(df.Color,df.ListPrice.cast("float"))
colordf = dd[['Color','ListPrice']]
colordfgroup = colordf.groupby('Color')['ListPrice'].mean()
#colordfgroup.show()
my_plot = colordfgroup.plot(kind='bar')
這是一個最小的例子
import pandas as pd
import matplotlib.pyplot as plt
colors = ['A', 'B', 'C', 'D', 'A', 'B', 'C', 'D', ]
lp = [10.0, 20.0, 30.0, 40.0, 12.0, 22.0, 32.0, 42.0 ]
colordf = pd.DataFrame(data = {'Color': colors, 'ListPrice':lp}, index = [x for x in range(len(colors))])
colordfgroup = colordf.groupby('Color')['ListPrice'].mean()
my_plot = colordfgroup.plot(kind='bar')
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