preprocess_matching_vars: Preprocess matching variables with automatic checks and...

In couplr: Optimal Pairing and Matching via Linear Assignment

Preprocess matching variables with automatic checks and scaling

Description

Main preprocessing function that orchestrates variable health checks, categorical encoding, and automatic scaling selection.

Usage

preprocess_matching_vars(
  left,
  right,
  vars,
  auto_scale = TRUE,
  scale_method = "auto",
  check_health = TRUE,
  remove_problematic = TRUE,
  verbose = TRUE
)

Arguments

left	Data frame of left units
right	Data frame of right units
vars	Character vector of variable names
auto_scale	Logical, whether to perform automatic preprocessing (default: TRUE)
scale_method	Scaling method: "auto", "standardize", "range", "robust", or FALSE
check_health	Logical, whether to check variable health (default: TRUE)
remove_problematic	Logical, automatically exclude constant/all-NA variables (default: TRUE)
verbose	Logical, whether to print warnings (default: TRUE)

Value

A list with class "preprocessing_result" containing:

• left: Preprocessed left data frame

• right: Preprocessed right data frame

• vars: Final variable names (after exclusions)

• health: Variable health diagnostics

• scaling_method: Selected scaling method

• excluded_vars: Variables that were excluded

• warnings: List of warnings issued

couplr documentation built on Jan. 20, 2026, 5:07 p.m.