Hundreds of websites offer mapping services, which highlight roads, railways, streets and scores of other things. Most of these sites charge for commercial use of their data and almost certainly won’t allow users to change the maps in a wiki-like fashion.
OpenStreetMap is a project to provide maps, like Google Maps does. Unlike sites like Google, though, OpenStreetMap provides its data freely under a Creative Commons licence.
The site relies on its users to utilise their GPS devices to record roads, something that can be done through several pieces of software available for platforms ranging from Linux to PocketPC to iPhones. These pieces of software produce journeys which can be traced around, labelled using software and then uploaded to OSM. As roads change, other users can then edit these pieces of information.
Many websites and appplication, especially those involved in the free software movement, utilise OpenStreetMap’s data.
To contribute to this project, you need a GPS receiver. Then, you need software to log it in the ‘GPX’ format; the project’s wiki lists a number of pieces of software for several platforms which do that. TopoGrafix Personally, I use Track n Trail for iPhone. OSM seem to like GPSBabel for non-mobile operating systems. Maps are then uploaded to OpenStreetMap, where using a Java editor they are edited and published. If this sounds complicated, a clearer how-to guide is available.
To summarise, OpenStreetMap is a wonderful idea. Coverage is patchy outside major cities, although most major roads in most Western countries are marked. There is no harm in contributing, naturally! It gives but more access to free information.
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Oh god no. Open Street Maps is no good to deal with. For any web dev that’s ever dealt with google maps API, this one is 10 times worse. The site of this in my RSS reader brought back painful memories of my last semester in college.
which way to the beer?