evaluate_variable_arguments: Evaluate Variable Arguments with NSE Support

In statuser: Statistical Tools Designed for End Users

Evaluate Variable Arguments with NSE Support

Description

Resolves bare symbols (unquoted names) or quoted strings to actual data, either from a data frame or the calling environment. This enables both plot_density(DV1, data=df) and plot_density("DV1", data=df) to work identically.

Usage

evaluate_variable_arguments(
  arg_expr,
  arg_name = "arg",
  data = NULL,
  calling_env = parent.frame(),
  func_name = "function",
  allow_null = FALSE
)

Arguments

arg_expr	Unevaluated expression (from match.call() or substitute())
arg_name	Character string. Name of the argument (for error messages)
data	Optional data frame to look up columns
calling_env	Environment to evaluate symbols if data is NULL
func_name	Character string. Name of calling function (for error messages)
allow_null	Logical. If TRUE, NULL is a valid input. Default FALSE.

Value

A list with:

• value: The actual data (vector, formula, or NULL)

• name: Clean name for labels (e.g., "DV1")

• name_raw: Raw name for error messages (e.g., "df$DV1")

• was_symbol: Logical. TRUE if input was an unquoted name

statuser documentation built on April 25, 2026, 5:06 p.m.