geomander (version 2.3.0)

r2dra: R to DRA

Description

Project a plan at the precinct level down to blocks into a format that can be used with DRA. Projecting down to blocks can take a lot of time for larger states.

Usage

r2dra(precincts, plan, state, path, epsg = 3857)

Value

tibble with columns Id, as used by DRA, identical to GEOID in census terms and District.

Arguments

precincts

Required. an sf dataframe of precinct shapes

plan

Required. Either a vector of district assignments or the name of a column in precincts with district assignments.

state

Required. the state postal code of the state

path

Optional. A path to try to save to. Warns if saving failed.

epsg

numeric EPSG code to planarize to. Default is 3857.

Examples

if (FALSE) {
# Needs Census Bureau API
cd <- tinytiger::tt_congressional_districts() %>% filter(STATEFP == '49')
cnty <- tinytiger::tt_counties(state = 49)
matchedcty <- geo_match(from = cnty, to = cd)
# use counties as precincts and let the plan be their center match:
r2dra(cnty, matchedcty, 'UT', 'r2dra_ex.csv')
}