Files
uscogdata/R/explain.R
T
jared 919548685b
R-CMD-check / check (push) Failing after 1m30s
polish(per-year-pop): expand popyear in cog_explain + propagate pop_range
Final-review followups:

1. cog_explain rendered the popyear range as raw 2-digit values
   ("popyear range: 19-20"), which a user could read as the years 19-20.
   Added .expand_popyear() helper to format as 4-digit calendar years
   (2019-2020). Pivot at 70 to handle pre-2000 vintages if the corpus
   ever extends backward.

2. cog_peer_compare provenance was missing pop_range and is_ratio,
   omitted from the spec-required reproducibility metadata.
   cog_find_peers now stamps both as tibble attributes; cog_peer_compare
   reads them through to provenance$pop_range and provenance$is_ratio.

Test coverage extended: explain test asserts the 4-digit format and
rejects the old 2-digit form; peer-compare test asserts pop_range +
is_ratio propagate end-to-end.

326 PASS / 0 FAIL.
2026-04-29 19:16:48 -04:00

123 lines
3.8 KiB
R

# R/explain.R
#' Explain a verb result's provenance
#'
#' Prints the structured provenance attached to a tibble returned by any
#' `cog_*` verb, or returns it as a list for downstream use (MCP tools,
#' dashboards, JSON export).
#'
#' @param result A tibble returned by a `cog_*` verb.
#' @param format `"print"` (default) for a human-readable cli summary;
#' returns `result` invisibly for chaining. `"list"` returns the raw
#' provenance list (identical to `attr(result, "provenance")`).
#' @return Either `result` (invisibly) or the provenance list.
#' @export
cog_explain <- function(result, format = c("print", "list")) {
format <- match.arg(format)
prov <- attr(result, "provenance")
if (is.null(prov)) {
cli::cli_abort(c(
"No `provenance` attribute on result.",
i = "Pass a tibble returned by a cog_* verb (e.g. cog_spending())."
))
}
if (format == "list") return(prov)
.print_provenance(prov)
invisible(result)
}
#' @noRd
.print_provenance <- function(prov) {
cli::cli_h1("{prov$verb}()")
tgt_ids <- paste(prov$target$canonical_govid, collapse = ", ")
tgt_names <- if (length(prov$target$gov_name) == 0L) {
"(no rows returned)"
} else {
paste(prov$target$gov_name, collapse = ", ")
}
cli::cli_text("Target: {tgt_names} [canonical_govid: {tgt_ids}]")
yrs <- prov$years
cli::cli_text(if (length(yrs) == 1L) {
"Year: {yrs}"
} else {
"Years: {min(yrs)}-{max(yrs)} ({length(yrs)} years)"
})
if (!is.null(prov$category)) {
cli::cli_text("Category: {paste(prov$category, collapse = ', ')}")
} else {
cli::cli_text("Category: (all)")
}
cli::cli_h2("Codes observed")
codes <- prov$codes_summed$observed
if (length(codes) == 0L) {
cli::cli_alert_info("No item codes matched.")
} else {
cli::cli_ul(codes)
}
if (isTRUE(prov$aggregate_fallback$applied)) {
cli::cli_h2("Aggregate fallback")
cli::cli_alert_warning(
"Aggregate fallback used for years: {paste(prov$aggregate_fallback$years, collapse = ', ')}"
)
}
cli::cli_h2("Transformations")
uc <- prov$transformations$units_conversion
if (isTRUE(uc$applied)) {
cli::cli_text("Units: {uc$source_unit} -> {uc$target_unit} (x{uc$multiplier})")
}
pc <- prov$transformations$per_capita
if (isTRUE(pc$applied)) {
cli::cli_text("Per-capita denominator: {pc$denominator_source}")
if (length(pc$popyear_range) == 2L) {
lo <- .expand_popyear(pc$popyear_range[1])
hi <- .expand_popyear(pc$popyear_range[2])
cli::cli_text(" popyear range: {lo}-{hi}")
}
if (!is.null(pc$pop_source_counts)) {
cli::cli_text(
" pop_source counts: census_f33={pc$pop_source_counts$census_f33}, unavailable={pc$pop_source_counts$unavailable}"
)
}
}
infl <- prov$transformations$inflation
if (isTRUE(infl$applied)) {
cli::cli_text("Inflation: {infl$index}, base year {infl$base_year}")
}
cli::cli_h2("Scope")
cli::cli_text(
"Included gov types: {paste(prov$scope$gov_types_included, collapse = ', ')}"
)
cli::cli_text(
"Excluded gov types: {paste(prov$scope$gov_types_excluded, collapse = ', ')}"
)
if (nzchar(prov$scope$scope_note %||% "")) {
cli::cli_text("Note: {prov$scope$scope_note}")
}
cli::cli_h2("Data vintage")
cli::cli_text(
"Manifest schema v{prov$manifest$schema_version}, pipeline {prov$manifest$pipeline_commit}, built {prov$manifest$built_at}"
)
invisible(NULL)
}
# Expand a 2-digit Census popyear (e.g. 19) to a 4-digit calendar year (2019).
# F-33 metadata stores popyear as 2 digits; pivot at 70 to handle a future
# corpus that ever spans pre-1970 vintages, though current scope is 2000+.
#' @noRd
.expand_popyear <- function(yy) {
yy <- as.integer(yy)
if (length(yy) == 0L || is.na(yy)) return(NA_integer_)
if (yy >= 100L) return(yy) # already 4-digit
if (yy < 70L) return(2000L + yy)
1900L + yy
}