[英]Category of variable didn't change in R
I want rename a category in a variable as shown here Replace a value in a data frame based on a conditional (`if`) statement 我想重命名变量中的类别,如下所示: 根据条件(`if`)语句替换数据框中的值
The values of itog$GOODS_NAME
are: itog$GOODS_NAME
的值是:
МАКФА макар УЛИТКИ 450г
When I change one of them like this: 当我这样更改其中之一时:
itog$GOODS_NAME[itog$GOODS_NAME == "макар"] <- "макароны"
The values of itog$GOODS_NAME
should be: itog$GOODS_NAME
的值应为:
МАКФА макароны УЛИТКИ 450г`
But instead they are unchanged: 但相反,它们没有改变:
itog$GOODS_NAME
МАКФА макар УЛИТКИ 450г
I guess that your variable itog$GOODS_NAME is a factor. 我想您的变量itog $ GOODS_NAME是一个因素。 You can check that with
class(itog$GOODS_NAME)
. 您可以使用
class(itog$GOODS_NAME)
。 When it is a factor, you have to convert it to a character. 如果是因素,则必须将其转换为字符。
itog = data.frame(GOODS_NAME = c("МАКФА", "макар", "УЛИТКИ", "450г"))
itog$GOODS_NAME = as.character(itog$GOODS_NAME)
itog$GOODS_NAME[itog$GOODS_NAME=="макар"] = "макароны"
itog$GOODS_NAME
Output: 输出:
"МАКФА" "макароны" "УЛИТКИ" "450г"
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