combineCols {toolbox}

Combine columns of a list/data frame into a list by row

Description

Combine columns of a list/data frame into a list by row

Usage

combineCols(x, cols = NULL, by_name = FALSE, parallel = FALSE, cores = 1)

Arguments

x

A list or data frame.

cols

An optional vector of column positions or names to combine together. If passing column names, set by_name to TRUE. The order of items in cols determines the order of the combined result.

by_name

Boolean, if TRUE, it quotes the items in cols to properly index the list by name (x[[1]] vs x[["col_a"]]).

parallel

Boolean, if TRUE, attempts to use mclapply.

cores

An integer, the number of cores to use if parallel is TRUE.

Value

A list of the values in each column combined together for each row.

Examples

combineCols(list("x" = c(1, 2, 3), "y" = c("a", "b", "c")))