Geocode for Bogota
I'm afraid Hadley is correct. Section 10.12 of Google Maps/Google Earth APIs Terms of Service states: 10.12 use or display the Content without a corresponding Google map, unless you are explicitly permitted to do so in the Maps APIs Documentation, the Street View API Documentation, or through written permission from Google (for example, you must not use geocodes obtained through the Service except in conjunction with a Google map, but the Street View API Documentation explicitly permits you to display Street View imagery without a corresponding Google map); The full terms of service are available from http://code.google.com/apis/maps/terms.html Yahoo! Maps API Terms of Use: http://info.yahoo.com/legal/us/yahoo/maps/mapsapi/mapsapi-2141.html has similar language in sections 1(f)(vii) and 1(f)(viii). I think very highly of Open Street Map, but the ability to actually use OSM data to accurately geocode locations is only going to be possible in a very limited number of areas (Karlsruhe, Germany perhaps?) since OSM mappers have appropriately tagged an extremely tiny fraction of the map. The legal answer to Juan Tom?s Sayago original post is to either obtain a public road network file with address range information (which may be available from a local or national government agency, very possible in Canada, the US, and recently the UK, but I have no idea about Bogota or Columbia) and use this data in conjunction with the PAGC geocoder engine: http://www.pagcgeo.org to create a shapefile set that can then be read into R. Alternatively, he could purchase a commercial application and a commercial road network layer, or pay a supplier to geocode his address list. Dan
On Thu, 2010-03-11 at 07:57 -0800, hadley wickham wrote:
They limit, however, the number of geocode requests to 15,000 in a 24 hour period. If the url connection breaks, then it might be a good idea to run the same loop one more time and set add a while command to look for the missing coordinates.
It's also against the terms of service to use it in this way (to save on your local computer and as input to further analyses). Hadley
Dan Putler Sauder School of Business University of British Columbia