Add a new column between other dataframe columns
dataframe, r
Solution
In 2 steps, you can reorder the columns:
dat$C <- NA
dat <- dat[, c("A", "C", "B")]
A C B
1 0.596068 NA -0.7783724
2 -1.464656 NA -0.8425972
You can also use `append`
dat <- data.frame(A = rnorm(2), B = rnorm(2))
as.data.frame(append(dat, list(C = NA), after = 1))
A C B
1 -0.7046408 NA 0.2117638
2 0.8402680 NA -2.0109721
Problem
I want to add a new column with "NA"s in my dataframe: ``` A B 1 14379 32094 2 151884 174367 3 438422 449382 ``` But I need it to be located between col. A and B, like this: ``` A C B 1 14379 NA 32094 2 151884 NA 174367 3 438422 NA 449382 ``` I know how to add col. C after col. B, but that is not helpful to me... Anyone know how to do it?