% Generated by roxygen2: do not edit by hand
% Please edit documentation in R/peers.R
\name{cog_peer_compare}
\alias{cog_peer_compare}
\title{Compare a target government against a peer set}
\usage{
cog_peer_compare(
  target_govid,
  peers,
  category,
  years,
  per_capita = TRUE,
  adjust_to_year = NULL,
  expenditure_concept = c("direct", "total")
)
}
\arguments{
\item{target_govid}{Character scalar.}

\item{peers}{A tibble from [cog_find_peers()] or a character vector of
`canonical_govid`s.}

\item{category}{Character scalar or vector.}

\item{years}{Integer vector.}

\item{per_capita}{Default `TRUE` — peer compare usually normalizes by
population.}

\item{adjust_to_year}{Integer base year for CPI-U conversion or `NULL`.}

\item{expenditure_concept}{`"direct"` (default) or `"total"`. Currently only
`"direct"` is accepted; the `"total"` option exists in [cog_spending()] for
single-government queries but cannot be used here because combining Total
across peer sets counts intergovernmental transfers twice.}
}
\value{
Tibble matching [cog_spending()]'s columns, plus a `role`
  column taking values `"target"`, `"peer"`, `"summary_p25"`,
  `"summary_p50"`, or `"summary_p75"`, `target_rank` (target's rank
  among target+peers at `max(years)`, NA for other rows), and
  `cohort_year` (the year used to build the peer cohort, read from
  `attr(peers, "cohort_year")`; `NA` when `peers` was a bare character
  vector). Provenance reports `verb = "cog_peer_compare"`, `peer_count`,
  `cohort_year`, and `cohort_govids`.
}
\description{
Pulls spending for the target plus a peer set (either a
[cog_find_peers()] result or a character vector of `canonical_govid`) and
appends peer-distribution summary rows (`summary_p25`, `summary_p50`,
`summary_p75`) so the result can be faceted by `role` in a single ggplot
call.
}