get_sub_name: Get a Substituted Name as Character for Subsetting

In jdtrat/jdtools: Helpful Tools and Code for Programming in R

Description

This generic function is primarily useful for functions that accept column names for subsetting data. The goal is to provide methods for users to supply either an unquoted column name or a quoted one (character string). It makes use of the fact that calling substitute() on a character string has a class "character", and class "name" otherwise.

Usage

get_sub_name(x)

Arguments

x	The substituted column name.

Value

The character vector for use with subsetting data.

Examples

get_col <- function(data, column) {
  name <- substitute(column)
  data[, get_sub_name(name)]
}

get_col(mtcars, hp)
get_col(mtcars, "hp")

jdtrat/jdtools documentation built on Dec. 20, 2021, 10:05 p.m.