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= OpenStreetMap =
OpenStreetMap is collaboratively building a free map of the world, editable by anyone. Imagine the collaborative editing of Wikipedia, but making a map like Google Maps instead of an encyclopedia. The project has many components and tools using many languages and technologies, both backend and frontend - if you like Ruby on Rails, PostgreSQL, Java, Javascript, C++, C, Python, or other languages, you can find components to contribute to.
Resources:
* Overview: [http://www.openstreetmap.org/ OpenStreetMap website] - explore the map! Here's [http://www.openstreetmap.org/about a summary of the project], and [https://en.wikipedia.org/wiki/OpenStreetMap here's the Wikipedia article].
* Development information: [http://wiki.openstreetmap.org/wiki/Develop The "Develop" page] explains the main components of OpenStreetMap and how they fit together, linking to the code and issue trackers for those individual components. There are also lots of smaller OSM-related open source tools that aren't listed on that page, like the [http://tasks.hotosm.org/ OSM Tasking Manager] and [http://maproulette.org/ MapRoulette] projects mentioned below.
* Contact info: The #osm-dev IRC channel (on the OFTC network) includes many contributors. [http://wiki.openstreetmap.org/wiki/IRC Here's their page about IRC], including a webchat link you can use to connect to #osm-dev. The "Develop" page also links to a [http://lists.openstreetmap.org/listinfo/dev mailing list for developers].
Suggested tasks:
* '''Testing documentation''': OSM wants people to be able to easily use its freely-licensed data instead of using Google Maps data, so it has a website teaching people how to do this: [http://switch2osm.org/ Switch2OSM]. The author of the [http://switch2osm.org/loading-osm-data/ "Loading OSM data" article] (pnorman on IRC) would like feedback on this article! This article expects having access to an Ubuntu instance, and it is designed to be usable for anyone with basic Linux and PostGreSQL knowledge. You can write down comments about the article (and any difficulty you ran into while following it), such as in an Etherpad, and then send the link to pnorman in the #osm-dev IRC channel. If you don't already have convenient access to a computer or server running Ubuntu, you can try setting up a [http://aws.amazon.com/free/ free Amazon Web Services EC2 "microinstance"] to play with.
* '''Fixing frontend code''': [http://maproulette.org/ MapRoulette] is a fun tool that recommends map edits for you to make. The code is [https://github.com/osmlab/maproulette on GitHub here], with [https://github.com/osmlab/maproulette/issues issues listed here]. This issue looks like a good one to get started with fixing: [https://github.com/osmlab/maproulette/issues/224 "because we use element fadeouts quite a bit, we should probably disable buttons visually right when the user clicks them - right now there is no visual feedback when clicking a button, other than the dialog fading"].
* '''Verifying a reported frontend bug''': The [http://tasks.hotosm.org/ OSM Tasking Manager] also helps map editors find editing tasks to work on. The code is [https://github.com/hotosm/osm-tasking-manager on GitHub here], with [https://github.com/hotosm/osm-tasking-manager/issues?state=open issues listed here]. You could help the project by seeing if you can reproduce this reported bug: [https://github.com/hotosm/osm-tasking-manager/issues/195 "Seems when scrolling up or down with the mouse wheel within the embed map, it moves both the map scale and the webpage scrollbar"] - and then add more details to that bug in a comment.
* '''Changing frontend code''': The [http://davis.openhatch.org/ OpenHatch at UC Davis] page uses a Google Map - how about switching that to an OpenStreetMap instead? Here's some documentation for how to do this: [http://wiki.openstreetmap.org/wiki/Export#Embeddable_HTML "Embeddable HTML with an added Marker"]. The code is here: [https://github.com/oh-davis/oh-davis.github.io oh-davis.github.io].
* '''Writing user experience feedback''': Make an OpenStreetMap account and try making some map edits (such as correcting any incorrect streets or street names in your neighborhood), and write down notes on your thought process and any problems you encounter, especially parts of the interface you find confusing or frustrating. The default map editing tool is called [http://wiki.openstreetmap.org/wiki/ID iD], and you can [https://github.com/openstreetmap/iD/issues file bugs here]. If you don't know exactly what to report as a bug, you can also write about your experience on the OpenStreetMap website using the built-in [http://www.openstreetmap.org/diary "diary entry"] feature, and then other OpenStreetMap developers and users can read your feedback to help them figure out how to improve OpenStreetMap.
= Oppia =
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