OpenStreetMap
More work on the body of Stanford campus.
Wish I had an iPhone app to help store pictures alongside with GPS traces.
(Dunno if that'd be useful for getting buildings right given the (lack of) accuracy on the device.)
That said, it'd be a great way to gather data more conveniently on a larger scale, to have a GPS trace where points (segments?) can be tagged with pictures, sounds, actual tags, or text!
Also getting up to speed on the OSM XML format. Seems challenging to deal with -- is it a bear to get imported into PostGIS? Might try to extract just enough data using XQilla...
讨论
Mungewell 于 2008年08月14日 22:17 的评论
There are already several application which will combine a GPS trace with digital photos, using the time stamps in the photo to interpolate a location. The location is then stored as an Exif tag, so that it can be used by JoSM, Flickr, or whoever.
Personally I use my cellphone camera as the time on the phone is tied to real/gps time via the network, so I don't need to work out the difference.
There are also projects to pick up time stamps on audio streams in a similar manner, see:
osm.wiki/index.php/Audio_mapping
Skywave 于 2008年08月15日 01:53 的评论
Also pretty easy to load OSM in postgis. The mapnik data gets rendered from a postgis database. osm2pgsql is used for the upload
lwu 于 2008年08月15日 05:37 的评论
Thanks -- I've heard of osm2pgsql but it doesn't seem designed for the kind of rapid prototyping I'm going for now. It seems that Osmosis supports reading in bzipped OSM files and exporting a subset of nodes, so I'll give that a try for now.