Insert one or more new columns into a data frame before or after the given column
insertColumns(Data, ..., before = "", after = "", stringsAsFactors = default.stringsAsFactors())
Data | data frame |
---|---|
… | named objects each of which will be a new column in the data frame. Each object must have as many elements as Data has rows. |
before | name of column before which to insert the new column(s) |
after | name of column after which to insert the new column(s) |
stringsAsFactors | passed on to data.frame() and cbind() |
data frame Data
with new columns inserted before the column
named as given in before
or after the column named as given in
after
Data <- data.frame(A = 1:5, B = 2:6) # Insert new columns X and Y before column "B" insertColumns(Data, before = "B", X = paste0("x", 1:5), Y = paste0("y", 1:5))#> A X Y B #> 1 1 x1 y1 2 #> 2 2 x2 y2 3 #> 3 3 x3 y3 4 #> 4 4 x4 y4 5 #> 5 5 x5 y5 6# This is the same as inserting new columns X and Y after column "A": insertColumns(Data, after = "A", X = paste0("x", 1:5), Y = paste0("y", 1:5))#> A X Y B #> 1 1 x1 y1 2 #> 2 2 x2 y2 3 #> 3 3 x3 y3 4 #> 4 4 x4 y4 5 #> 5 5 x5 y5 6# You may also insert before the first... insertColumns(Data, before = "A", X = paste0("x", 1:5), Y = paste0("y", 1:5))#> X Y A B #> 1 x1 y1 1 2 #> 2 x2 y2 2 3 #> 3 x3 y3 3 4 #> 4 x4 y4 4 5 #> 5 x5 y5 5 6# ... or after the last column insertColumns(Data, after = "B", X = paste0("x", 1:5), Y = paste0("y", 1:5))#> A B X Y #> 1 1 2 x1 y1 #> 2 2 3 x2 y2 #> 3 3 4 x3 y3 #> 4 4 5 x4 y4 #> 5 5 6 x5 y5