Welcome! Why you should be contributing to OpenStreetMap and not Google Maps PHP North West Unconference - Manchester, UK - October 8th, 2011 Derick Rethans - [email protected] - twitter: @derickr http://derickrethans.nl/talks.html http://joind.in/3809 What is Google Maps? In words: ● It gives you free map tiles ● It gives you satellite imagery ● It gives you StreetView™ ● It gives you a free JavaScript library ● It gives you a free geo-coding API OpenStreetMap ● "Wikipedia for Map Data" ● Licensed under the Creative Commons Attribution-ShareAlike 2.0 licence (CC-BY-SA): You are free to copy, distribute, transmit and adapt our maps and data, as long as you credit OpenStreetMap and its contributors. If you alter or build upon our maps or data, you may distribute the result only under the same licence. ● Rendered map: ● A lot of data is not rendered, but is available. What is OpenStreetMap? ● A database with geographic data of the whole planet under a free license ● APIs to add, retrieve and query map data ● A social platform for improving the map Mapping parties As OSM's main purpose is creating a database of free map data: ● data needs to be generated (surveyed), which is best done by hand ● data needs to be added to the database: Potlatch, JOSM ● surveying is more fun if you're not alone ● why not do it in a group? Editting the map Mapping party: Kibera Mapping party: Korogocho Google Mapping Party ● Google invited an OSM-er to a Google MapMaker mapping "course" ● They were shown arm-chair mapping ● OSMers showed a little about what a real mapping party is ● They asked tough questions: "How can we use the mapping data in a GPS?", "How can I map some grass?" and "How can I get all the pubs?" ● OSM is about the data, any kind of geographic data Using data ● Quering data (API, XAPI/JXAPI, Nominatim) ● Render and display what ever you want from it Terms and Conditions OSM: ● OpenStreetMap is open data, licensed under the Creative Commons Attribution-ShareAlike 2.0 licence (CC-BY-SA). Google Maps: ● Can I generate a map image using the Google Static Maps API which I store and serve from my website? — You may not store and serve copies of images generated using the Google Static Maps API from your website. ● What transaction limits apply to the Maps API? — From October 1st 2011 commercial web sites and applications using the Maps API may at no cost generate: up to 2,500 map transactions ● Geocoding Usage Limits: Use of the Google Geocoding API is subject to a query limit of 2,500 geolocation requests per day Bad data Resources [email protected] - twitter: @derickr http://derickrethans.nl/talks.html http://joind.in/3809 ● http://openstreetmap.org ● http://mapref.org ● http://dev.openlayers.org/docs/files/OpenLayers-js.html ● http://data.london.gov.uk/taxonomy/categories/transport ● http://www.flickr.com/services/api/ ● http://www.ordnancesurvey.co.uk/oswebsite/gps/information/coordina tesystemsinfo/guidecontents/index.html ● http://en.wikipedia.org/wiki/Helmert_transformation ● http://wiki.openstreetmap.org/wiki/OSTN02_for_PHP ● http://leaflet.cloudmade.com/examples/quick-start.html ● http://code.google.com/apis/maps/documentation/javascript/ ● http://wiki.openstreetmap.org/wiki/Nominatim ● http://developer.yahoo.com/geo/placefinder/guide/ ● http://www.geonames.org/export/web-services.html ● http://code.google.com/intl/es- ES/apis/gears/geolocation_network_protocol.html ● http://www.mongodb.org/display/DOCS/Geospatial+Indexing ● http://en.wikipedia.org/wiki/Gpx.