错误 $ 运算符对原子向量无效
[英]Error $ operator is invalid for atomic vectors
问题描述
I have a data frame "SF" with the following structure
我有一个具有以下结构的数据框“SF”
> str(SF)
Classes ‘data.table’ and 'data.frame': 6768 obs. of 8 variables:
$ Class-Entity-Month : chr "Bagel Shop--1--1" "Bagel Shop--1--2" "Bagel Shop--1--3" "Bagel Shop--1--4" ...
$ Customer Class : chr "Bagel Shop" "Bagel Shop" "Bagel Shop" "Bagel Shop" ...
$ Entity : int 1 1 1 1 1 1 1 1 1 1 ...
$ SBMONTH : int 1 2 3 4 5 6 7 8 9 10 ...
$ End Market : chr "Food Service" "Food Service" "Food Service" "Food Service" ...
$ Customer Class Seasonality: num 0.0567 0.0562 0.0702 0.0685 0.0736 0.0921 0.0912 0.0936 0.0975 0.0922 ...
$ End Market Seasonality : num 0.077 0.0792 0.0923 0.0808 0.0804 0.0873 0.0897 0.0903 0.083 0.0816 ...
$ Seasonality : num 0.0567 0.0562 0.0702 0.0685 0.0736 0.0921 0.0912 0.0936 0.0975 0.0922 ...
I need to add to another data frame the column with value from table "SF" based on the following rule:我需要根据以下规则将具有来自表“SF”的值的列添加到另一个数据框中：
df <- mutate(df, "Coef" = SF$Seasonality[match(`Class-Entity-Month`, SF$`Class-Entity-Month`)])
The mutate function is pretty popular and works in 100's lines of my code.变异 function 非常受欢迎，并且可以在我的 100 行代码中使用。 But in this case I got the Error Message:但在这种情况下，我收到了错误消息：
Error in `mutate()`:
! Problem while computing `Seasonality = ...[]`.
Caused by error in `` New_Customer_Monthly_Sales$`Class-Entity-Month` ``:
! $ operator is invalid for atomic vectors
What's wrong?怎么了？
0 个解决方案
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