Geocoding

Geocoding [dʒiː.oʊkoʊdɪŋɡ]: The process of converting address data (like postal codes, street names or complete addresses) into numerical coordinates that mark their place on the globe.

Most of the time, this place is represented by latitude and longitude. A geocoder is a piece of software that calculates this conversion. The spatial data is drawn from some framework that links street addresses to their geographical representation, like an OpenStreetMap service or the Google maps API.

You can use, for example, the Excel Geocoding Tool or OpenRefine to geocode your data.

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Git

Git [ɡɪt]: a version control system. Developers use version control systems to organize their projects, to update and change code and to store these modifications in a central repository. Others can contribute to that repository and download and upload changes.

Git is Open Source and a command-line tool, which means that it does not have its own user interface. You use it by entering short commands into the terminal/command-line.

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GitHub

GitHub [ɡɪthʌb]: a web-based hosting service to upload and share code. Also see BitBucket.

It runs on the Open Source version control system Git. Developers use version control systems to organize their projects, to update and change code and to store these modifications in a central repository. Others can contribute to that repository and download and upload changes.

GitHub is literally a connection of Git and Hub. Git is a command-line tool. It does not have its own user interface. You use it by entering short commands into the terminal/command-line. The Hub of GitHub is the webpage where developers store their projects and network with the GitHub community.