Importing external targets with evidence

WFC 2.0 imports targets from a finalized CSV or Excel table and a companion DCF evidence record. It does not construct a production target from an unexplained runtime table.

dims <- wf_dims(
  age_group = c("18-34", "35-54", "55+"),
  region = c("north", "south")
)

wf_target_template("population-margins.csv", dims)

Complete the companion population-margins.csv.source.dcf with publisher, dataset title, citation, reference period, population scope, retrieval date, license, transformation, selection timing, demo status, and the final SHA-256.

target <- wf_import_target(
  "population-margins.csv",
  "population-margins.csv.source.dcf",
  dims,
  key_map = c(age_group = "age_group", region = "region"),
  count = "population_count",
  production = TRUE
)

For joint-cell post-stratification, the imported population table must contain the required joint combinations. For an independent reference sample, use wf_import_reference() with its own evidence file.

The checksum proves that the imported data match the evidence record. It does not prove that the publisher, transformation, or scientific choice is valid; those remain review questions.