OpenStreetMap License ● OpenStreetMap® is open data, licensed under the Open Data Commons Open Database License (ODbL) by the OpenStreetMap Foundation (OSMF). ● You are free to copy, distribute, transmit and adapt our data, as long as you credit OpenStreetMap and its contributors. If you alter or build upon our data, you may distribute the result only under the same licence. The ful legal code explains your rights and responsibilities. ● The cartography in our map tiles, and our documentation, are licensed under the Creative Commons Attribution-ShareAlike 2.0 license (CC BY-SA).
"Why not just use Google maps?" ● Short answer: ✔ Because that data is copyrighted and owned by multiple organisations like the Ordnance Survey. Google/whoever just licenses it. If we were to use it, we'd have to pay for it. ✔ 日本では、ゼンリンなど
How can a project like this create accurate maps? ● By the very nature of the wiki-style process there is no guarantee of accuracy of any kind. ● Then again, few proprietary maps carry a guarantee of accuracy, either. ● In fact, some have artificial y-introduced errors.
Mapping ● This is not just an online project. ● We are getting out from behind our computer screens, and surveying towns and countryside to create our maps. ● This is very much a community mapping effort. ● We use wiki-style collaborative editing software to support this, ...
Beginners' guide ● You need a computer connected to the Internet and some time to gather information and then enter it. ● A GPS unit and connecting cable are purely optional, but will be required if you want to collect data that way. ● Given the excellent aerial photography available in the editors these days, a GPS is less important than in the early days of the project.
Join the community ● Before you can contribute to OpenStreetMap you will need to sign up and agree to share your contributions under OpenStreetMap's license. This ensures that the data stays free for everyone and that changes can be attributed to specific sources. ● You don't need to use your real name as your user name. Many people use pseudonyms or nicknames instead. ● The email address you provide is just for validation and messages between users. It is never revealed directly to other users.