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OpenLayers 3 : Beginner's Guide by Erik Hazzard, Paul Spencer, Thomas Gratier

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Using geospatial data from Flickr

Because OpenLayers is so flexible, it's easy to make third-party software and data work with our maps. Sharing geospatial data is becoming more popular, with services such as Flickr and Twitter freely offering geospatially embedded data. Being able to visualize data often helps us to understand it. Using OpenLayers, we can place geospatial data (say, Twitter posts or Flickr images) on a map and get a clearer picture about the data.

Note on APIs

Many popular sites provide an API (Application Programmer Interface) that allows programmers to interact with their data. For instance, both Flickr and Twitter provide APIs that enable developers to view recent updates (photo uploads and tweets). These APIs (but not all APIs) ...

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