Preflight census data
census_data_preflight(census.data, census.geo, year)
A list indexed by two-letter state abbreviations,
which contains pre-saved Census geographic data.
Can be generated using get_census_data
function.
An optional character vector specifying what level of
geography to use to merge in U.S. Census geographic data. Currently
"county"
, "tract"
, "block_group"
, "block"
, and "place"
are supported.
Note: sufficient information must be in user-defined voter.file
object.
If census.geo = "county"
, then voter.file
must have column named county
.
If census.geo = "tract"
, then voter.file
must have columns named county
and tract
.
And if census.geo = "block"
, then voter.file
must have columns named county
, tract
, and block
.
If census.geo = "place"
, then voter.file
must have column named place
.
If census.geo = "zcta"
, then voter.file
must have column named zcta
.
Specifying census.geo
will call census_helper
function
to merge Census geographic data at specified level of geography.
An optional character vector specifying the year of U.S. Census geographic
data to be downloaded. Use "2010"
, or "2020"
. Default is "2020"
.