Files
uscogdata/man/cog_find_peers.Rd
jared 54dd40a61d feat(peers): cog_find_peers uses per-year population
Adds optional 'year' argument (defaults to most recent observed year for
the target). Filters and ranks candidates by gov_population_yearly.population
at that year. Returned column renamed population_acs -> population.
Cohort year attached as attr(x, 'cohort_year').

Adds .resolve_cohort_year() helper. Updates test assertions to use
'population' column name. Regenerates man/cog_find_peers.Rd.
2026-04-29 17:26:32 -04:00

48 lines
1.5 KiB
R

% Generated by roxygen2: do not edit by hand
% Please edit documentation in R/peers.R
\name{cog_find_peers}
\alias{cog_find_peers}
\title{Find peer governments by similarity criteria}
\usage{
cog_find_peers(
target_govid,
year = NULL,
same_type = TRUE,
same_state = FALSE,
pop_range = c(0.7, 1.3),
is_ratio = TRUE,
max_peers = 10L
)
}
\arguments{
\item{target_govid}{Character scalar — `canonical_govid` of the target.}
\item{year}{Integer scalar. Cohort vintage. When `NULL` (default), uses the
most recent year for which the target has an observed population in
`gov_population_yearly`.}
\item{same_type}{If `TRUE` (default) restrict peers to the target's
`govs_type`.}
\item{same_state}{If `TRUE` restrict peers to the target's `fips_state`.
Default `FALSE`.}
\item{pop_range}{Length-2 numeric vector giving lower/upper bounds.}
\item{is_ratio}{If `TRUE` (default) `pop_range` is multiplied by the
target's population at `year` to produce absolute bounds. If `FALSE`,
`pop_range` is interpreted as absolute population counts.}
\item{max_peers}{Integer cap on the number of peers returned.}
}
\value{
Tibble with columns `canonical_govid`, `gov_name`, `fips_state`,
`population`, `pop_ratio`, `rank`. The cohort year is attached as
`attr(x, "cohort_year")`.
}
\description{
Selects peer governments by combinations of government type, state, and
population range at a chosen `year`. Peers are ordered by `|log(pop_ratio)|`
ascending (closest to the target's population first).
}