rename the category of variable in R
12,674
Convert it to characters, use simple subsetting and convert it back to a factor (optional):
mydat$x1 <- as.character(mydat$x1)
mydat$x1[mydat$x1 == 'd'] <- 'f'
# optional
mydat$x1 <- as.factor(mydat$x1)
Or - as you were looking for a dplyr
solution:
library(dplyr)
mydat %>%
mutate(x1 = as.character(x1),
x1 = if_else(x1 == 'd', 'f', x1),
x1 = as.factor(x1))
Both will yield
x1 x2 x3
1 a 1 2
2 b 1 2
3 c 1 2
4 f 1 2
Author by
Admin
Updated on September 10, 2022Comments
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Admin over 1 year
I have text variable
X1
. It takes valueA,B,C,D
. I need to rename category D to F. So in output i expectA,B,C,F
How can i do it? here my datasetmydat=structure(list(x1 = structure(1:4, .Label = c("a", "b", "c", "d"), class = "factor"), x2 = c(1L, 1L, 1L, 1L), x3 = c(2L, 2L, 2L, 2L)), .Names = c("x1", "x2", "x3"), class = "data.frame", row.names = c(NA, -4L))