geotagged photos


GIS Learning

Geofencing

Geofencing

With all the location-based social media applications out there, it’s only logical that, in addition to being able to restrict access based on ones social groups (or circles), that geographic boundaries also be used as a restrictive parameter.  That capability is called a geofence, a virtual way to set the […]

GIS Data

Blue pictures are by locals. Red pictures are by tourists. Yellow pictures might be by either.

Mapping Out Geotagged Photos

Eric Fischer, a photographer, has done his own analysis of geotagged maps on Flickr with his The Geotaggers’ World Atlas.  Over fifty major cities are represented in his set.  On top of OpenStreet base maps, Fischer used perl scripts to identify and plot the clusters of locations.  The lines show the […]

GIS Learning

Privacy in GIS Issues

Privacy in GIS Issues

The increase usage of GIS and associated geospatial technologies has brought with it a rise in public concern over privacy. The proliferation of easily accessible public geographic information via the web is one of the reasons.  The availability of not only aerial and satellite imagery but also street level imagery […]