rpubmed (version 0.1)

geocode_addresses: Returns a data frame of geocoded addresses with longitude and latitudes Uses the Google Maps geocode API

Description

Returns a data frame of geocoded addresses with longitude and latitudes Uses the Google Maps geocode API

Usage

geocode_addresses(addresses, sleeper = 0.33, depth = 3)

Arguments

addresses

A character vector of addresses for geocoding

sleeper

numeric Number of seconds between calls to the geocoding server

depth

integer recursion depth for attempting to get coordinates. If the full address fails to get a hit, the function is called again with the first line of the address removed. The process is repeated depth times before returning NAs

Value

data frame of addresses, latitudes and longitudes

Examples

## Not run: 
#  # get a list of articles pulled from pubmed:
# abstracts <- fromJSON("Test/plasticity_abstracts.json")
# 
# # Extract affiliated addresses from article metadata:
# affil_addresses <- get_article_location_data(abstracts)
# 
# # Get coordinates:
# coords <- geocode_addresses(affil_addresses, depth = 4)
# 
# # plot coordinates on a map:
# 
# map("world", col="#f2f2f2", fill=TRUE, bg="white", lwd=0.05)
# points(coords$long, coords$lat, col = "red", pch = 20)
# ## End(Not run)