[英]How to replace values in a data frame with another value
I have huge data set.我有庞大的数据集。 The columns contain values like
A,B,C,D,E,F,G,H
and I need to replace them with 1,2,3,4...
这些列包含
A,B,C,D,E,F,G,H
等值,我需要用1,2,3,4...
[1] "C" "C" "C" "C" "C" "A" "H" "G" "G" "G" "G" "G" "G" "G" "C" "C" "C" "C" "C"
[20] "C" "B" "B" "B" "H" "H" "H" "H" "H" "H" "G" "C" "A" "A" "A" "A" "A" "A" "A"
[30]----
Another similar problem is values in one column are more than 1000
and I need to replace them by unique numbers.另一个类似的问题是一列中的值超过
1000
,我需要用唯一的数字替换它们。
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