createSubvarDeriv: Create subvariable derivation expressions

In crunch: Crunch.io Data Tools

Create subvariable derivation expressions

Description

This function creates a single subvariable definition based on a character string to search for and an originating variable. It uses regex to determine whether a string is present in a delimited list, then substitutes the user supplied values to indicate selection, non-selection, and missingness.

Usage

createSubvarDeriv(var, str, delim, selected, not_selected, unanswered)

Arguments

var	The variable containing the delimited responses
str	A string whose presence indicates a selection
delim	The delimiter separating the responses
selected	A character string used to indicate a selection, defaults to "selected"
not_selected	Character string identifying non-selection, defaults to "not_selected"
unanswered	Character string indicating non-response, defaults to NA.

Value

A VariableDefinition

crunch documentation built on Aug. 31, 2023, 1:07 a.m.