CODEWITHSUNDEEP
rdataframepaste
Wagner Jorge
Wagner Jorge

Reputation: 430

Automatic name in dataset using paste

I'd like to put names in datasets automatically using paste or paste0. For example, if we consider a dataset with three variables, we have six columns and the expected result is

dta <- data.frame(matrix(1:60, ncol = 6))
names(dta) <- c('X1_dim1', 'X1_dim2', 'X2_dim1', 'X2_dim2', 'X3_dim1', 'X3_dim2')

Upvotes: 0

Views: 60

Answers (1)

Ronak Shah
Ronak Shah

Reputation: 388817

Using rep

paste0("X", rep(1:ncol(dta), each = 2, length.out = ncol(dta)), "_dim", 1:2)
#[1] "X1_dim1" "X1_dim2" "X2_dim1" "X2_dim2" "X3_dim1" "X3_dim2"

rep generates sequence of length ncol(dta) with each element repeated twice

rep(1:ncol(dta), each = 2, length.out = ncol(dta))
#[1] 1 1 2 2 3 3

Upvotes: 3

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