doBy (version 4.6.21)

split_byrow_bycol: Split matrix or dataframe into list

Description

Split matrix or dataframe into list by columns or by rows

Usage

split_bycol(x, idx = NULL, as.list = FALSE)
split_byrow(x, idx = NULL)

Arguments

x

Matrix or dataframe.

idx

Index to split by. If NULL, split by columns or rows.

as.list

If TRUE, return list of dataframes. If FALSE, return list of matrices.

Examples

x <- mtcars[1:3, 1:6]
x  |> split_bycol()
x  |> split_bycol(as.list=TRUE)
x  |> split_bycol(as.list=FALSE)
x  |> split_bycol(idx=c(1,1,1,2,2,3,3,3))
## x  |> split_bycol(idx=c(1,1,7,2,2,3,3,3)) ## Gives error

x <- mtcars[1:6, 1:6]
x  |> split_byrow()
x  |> split_byrow(idx=c(1,1,2,2))

m <- as.matrix(x)
u <- x |> split_byrow(idx=c(1,1,2,2))
y <- m |> split_byrow(idx=c(1,1,2,2))