zip_distance()
results (Pull request contributed by Nicholas X Lee).zip_distance() function to
allow distance calculations between two vectors or columns of ZIP codes.
The function now returns a data.frame of the resulting distance
calculation.zip_distance() now includes an additional argument,
units, which allows selection between miles and meters for distance
calculations.zip_code_db has been updated.download_zip_data() has been refactored to make data
updates more easily accessible and compare against existing data. Data
is now directly downloaded from the upstream source and the existing
data GitHub repository will no longer be updated.zip_distance() has been updated to allow changing the
type of distance calculation performed if specified via the lonlat
argument.{zipcodeR} in a publication, you can obtain citation info
by running citation("zipcodeR").{udunits2} for the
zip_distance() and search_radius()
functions.search_radius() function to allow searching for
ZIP codes around a radius of lat / lon coordinates.zip_distance() function for calculating the
distance between ZIP codes using their centroids.geocode_zip() function that returns the lat / lng
centroid of a given ZIP code.normalize_zip() function for normalizing messy
ZIP code input (Contributed by Claus Wilke).reverse_zipcode() function has been updated to
return a blank row for invalid ZIP codes with no matches in the zip code
database.search_ family of functions are now quieter.search_county() function now allows for approximate
matching of county names using agrep (Andre Mikulec)search_state() is now vectorized and will accept a
vector of state abbreviationssearch_tz() is now vectorized and will accept a vector
of timezoneszip_code_db has been updated to use latest upstream
datareverse_zipcode() function for obtaining metadata
about a given ZIP code.search_cd() function for searching ZIP codes
contained within a given congressional district.is_zcta() function for testing whether a given
ZIP code is a ZIP code tabulation area (ZCTA).search_fips() function for searching ZIP codes by
state and county FIPS codes.get_cd() and search_cd() functions
for relating ZIP codes to congressional districtsInitial public release, first version accepted by CRAN.
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