[R] Re : help to replace variable value

[Wu Gong]

Do you mean replace values of a column?
> df <- data.frame("Jan" = 1:3,"Feb" = 11:13)
> df
  Jan Feb
1   1  11
2   2  12
3   3  13
> df$Jan <- 21:23
> df
  Jan Feb
1  21  11
2  22  12
3  23  13

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