select.matrix: Select Columns of a Matrix

In KO112/KO: Kevin O'Brien's Personal Package

Description

Select columns of a matrix by name, dplyr style. Defines the dplyr::select method for matrixes.

Usage

## S3 method for class 'matrix'
select(.data, ..., throwError = TRUE)

Arguments

.data	The matrix to select columns from.
...	The column names to select (can be quoted, but not necessary).
throwError	whether to throw an error if invalid columns are selected (if FALSE), only a warning will be sent) (logical scalar).

Value

A matrix of the selected columns.

Examples

library(dplyr)
mat <- as.matrix(mtcars)
select(mat, mpg)
select(mat, mpg, cyl)
select(mat, mpg, cyl, "disp")
select(mat, "mpg", "cyl", "disp", "am")
try(select(mat, mpg2))
try(select(mat, mpg2, throwError = TRUE))
select(mat, mpg2, throwError = FALSE)

KO112/KO documentation built on Oct. 2, 2020, 9:21 a.m.