r2dra | R Documentation |
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.
r2dra(precincts, plan, state, path, epsg = 3857)
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. |
tibble with columns Id, as used by DRA, identical to GEOID in census terms and District.
## Not run:
# 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')
## End(Not run)
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