Benjamin -
Perhaps this will get you started:
addr = '1600 Pennsylvania Avenue, Washington, DC'
url = paste('http://maps.google.com/maps/api/geocode/xml?address=',
+ addr,'&sensor=false',sep='')
library(XML)
doc = xmlTreeParse(url)
root = xmlRoot(doc)
lat = xmlValue(root[['result']][['geometry']][['location']][['lat']])
long = xmlValue(root[['result']][['geometry']][['location']][['lng']])
lat
[1] "38.8976500"
long
[1] "-77.0356669"
- Phil Spector
Statistical Computing Facility
Department of Statistics
UC Berkeley
spec...@stat.berkeley.edu
On Tue, 16 Mar 2010, Nutter, Benjamin wrote:
Does anyone have any experience retrieving latitutde and longitude for
an address from the Google Maps API?
I'd like to have an R script that submits a street address, city, state,
and zip code and returns the coordinates. So far, I've been submitting
the coordinates from another program, then loading the coordinates in R
and merging them back into the data frame I want to use. It'd be nice
to be able to do it all in one script, but I'm not comprehending the API
thing very well.
I'm using R 2.9.1 on Windows XP. Any suggestions or pointers?
Benjamin
Benjamin Nutter | Biostatistician | Quantitative Health Sciences
Cleveland Clinic | 9500 Euclid Ave. | Cleveland, OH 44195 |
(216) 445-1365
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