Find scenarios that differ from a reference in exactly one parameter — find_single_param

Identifies rows that differ from a reference in exactly one parameter. You may pass param_cols explicitly, or let the function infer them by excluding id_col, exclude_cols, and any columns matching exclude_cols_regex (default excludes result columns like h_*).

Usage

find_single_param_variations(
  data,
  ref_scenario = "s00001",
  id_col = "scenario_name",
  param_cols = NULL,
  exclude_cols = NULL,
  exclude_cols_regex = "^h_",
  tol = 1e-09,
  quiet = FALSE,
  include_reference = c("per_param", "none")
)

Arguments

data: A data frame with scenarios.
ref_scenario: Reference scenario ID (default "s00001").
id_col: Name of the scenario ID column (default "scenario_name").
param_cols: Optional character vector of parameter columns. If NULL, parameters are inferred.
exclude_cols: Character vector to exclude from parameter detection.
exclude_cols_regex: Regex to auto-exclude non-parameter columns (default "^h_").
tol: Numeric tolerance for numeric comparisons (default 1e-9).
quiet: Logical; print diagnostics if FALSE (default).
include_reference: "per_param" (default) to include one reference row per parameter with hits, or "none".

Value

A data frame with columns: id_col, param_name, param_value, is_reference. Attributes: "param_cols", "ref_row", "diff_mat", "n_diff".