Predict blank class-reference values with reviewed regex rules — predict_class

Applies a separate regex reference only to rows whose material is blank. Populated exact materials are authoritative and are never overwritten, even when a regex also matches them. A blank row is filled only when all matching patterns name one material. Distinct-material matches remain blank and are reported as clashes. Exact/regex overlaps are allowed and reported for QA. If present, match_identity is used for pattern matching while spectrum_identity remains the reported exact identity.

Usage

predict_class_reference(
  metadata,
  regex_reference,
  return = c("table", "report")
)

Arguments

metadata: A data.frame or data.table with spectrum_identity and material columns. Row order is preserved.
regex_reference: A data.frame or data.table with unique pattern and nonblank material columns.
return: Return the updated table or an audit containing data, summary, predictions, clashes, and overlaps.

Value

An updated data.table, or an audit list when return = "report".