1. Photo Subjects. All photographs in the “City Hall (old)” series presumably belong in the same place. We manually geocoded several hundred subjects.
2. Addresses and Cross-Streets. The photo descriptions often contain either an address, block number or set of cross-streets. These were converted to coordinates using the Google Geocoding API.
Comments
Amazing. Did they geolocate each photo by travelling around the city and eyeballing it?
According to http://www.oldsf.org/about:
The geocodes are based on two sources:
1. Photo Subjects. All photographs in the “City Hall (old)” series presumably belong in the same place. We manually geocoded several hundred subjects.
2. Addresses and Cross-Streets. The photo descriptions often contain either an address, block number or set of cross-streets. These were converted to coordinates using the Google Geocoding API.
Brilliant work, it must have taken thousands of man-hours to do this. I'm really enjoying looking through it.