OpenStreetMap Karel Janecka Department of Mathematics, Faculty of Applied Sciences University of West Bohemia Pilsen, Czech Republic

OpenStreetMap OpenStreetMap (OSM) is a collaborative project to create a free editable map of the world. The maps are created using the data from portable GPS devices, aerial photography, other free sources or simply from local knowledge. Both rendered images and the vector graphics are available for download under a Creative Commons Attribution- ShareAlike 2.0 licence.

OpenStreetMap OpenStreetMap was inspired by sites such as Wikipedia - a full revision history is maintained. Registered users can upload their GPS track logs and edit the vector data using the given editing tools.

History OpenStreetMap (OSM) was founded in July 2004 by Steve Coast. In April 2006, a foundation was established with the aim of encouraging the growth, development and distribution of free geospatial data and providing geospatial data for anybody to use and share. In December 2006 Yahoo confirmed that OpenStreetMap could use their aerial photography as a backdrop for map production

History By August 2008, shortly after the second The State of the Map conference was held, there were over 50,000 registered contributors; by March 2009 there were 100,000 and by the end of 2009 there were nearly 200,000. Note that not all registered contributors actually contribute to the map - in March 2008 approximately 10% of the registered users were contributing to the map data each month

Technology The initial map data was all built from scratch – volunteers performed systematic ground surveys using a handheld GPS units and a notebooks or a voice recorders Collected data were then entered into the OpenStreetMap database from a computer More recently the availability of aerial photography and other data sources from commercial and government sources has greatly increased the speed of this work and has allowed land- use data to be collected more accurately. When large datasets are available a technical team will manage the conversion and import of the data.

Licencing OpenStreetMap data is published under an open content licence, with the intention of promoting free use and re- distribution of the data (both commercial and non- commercial). The currently used licence is the Creative Commons Attribution-Share Alike 2.0 licence – however legal investigation work and community consultation is under-way to re-license the project under the Open Database Licence (ODbL) which is more suitable for a map dataset

OpenStreetMap

Integration of OSN into applications