GIS (geographic information system) software allows the user to treat the Earth’s surface as a continuous array of numbers. Images and raster datasets can be used to rank suitable locations, estimate ...

GIS software allows the user to treat the Earth’s surface as a continuous array of numbers. Images and raster datasets can be used to rank suitable locations, estimate change, and display phenomena ...

If you've ever zoomed around the globe with Google Earth, you know how much fun it can be to work with geospatial data. When I need a diversion, I often fire up Google Earth and float above the ...

James Gray continues his review of desktop Geographic Information System (GIS) applications with an introduction to the concepts needed to get started with the user-friendly, open-source Quantum GIS.