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One of the great rewards with working within a university is the interaction with students and seeing them advance through their studies and carryout innovative research projects. This last academic year the Computational Social Science Program here at Mason had a bumper crop of graduates...

In the past I have written several pieces about Google, Google Maps and how its been pushing the boundaries of geography. The other day I was fortunate enough to attend a talk by John Bailey from Google's Geo Education team when he was visiting Masons GGS Department. Overall it was excellent...

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Four new SpatiaLABS are now available using Search and Rescue in Yosemite National Park as their topic. These are FREE and ideal for beginners to geographic information systems (GIS), search and rescue professionals, or even GIS Specialists who are new to ArcGIS Pro or ArcGIS Online. In the...

We recently came across this interesting article by National Geographic about a recent study of land/water changes over the last 30 years. The study is by researchers at the Deltares Research institute who used Google Earth Engine to gather and process the data. The data itself comes from...

We have done a number of posts in past years covering various aspects of the 9/11 terrorist attacks and the subsequent rebuilding of the World Trade Center, so today we will only be looking at some of the most recent changes. If you go to the site of the World Trade Center in Google Earth, […]...

Yesterday we made some Google Earth tours of various US parks. We recorded the tours using Google Earth’s built in ‘Record a tour’ button on the tool bar and then navigating with a SpaceNavigator 3D mouse. Everything seemed fine until we played back the tours and found that some of them have...

In our August month-end post we mentioned that Monument Valley, Arizona / Utah was now in 3D in Google Earth. Several other US parks also received 3D imagery at the same time. What we didn’t realise at the time was the reason why Google added 3D for several US parks at the end of August. […]...

As of this writing, Google has not updated ‘historical imagery’ for almost three months. Up until mid-June they had been updating it almost weekly. As a result, there have been a lot of events over the past few months that we know were captured by DigitalGlobe but we cannot access the imagery in...

We recently came across this story in which a former engineer on the US spy satellites known as Keyhole-9, claims that the imagery they got from those satellites were ‘better than Google Earth’. We thought this was something worth looking in to. Google Earth has imagery in a wide range of...

We recently did several posts about drawing contours using altitude data from different Altitude API services. The first version used the Google Maps Elevation API and the second used Mapzen’s elevation API. The biggest problem was that the API’s are throttled, in Google’s case, to stop abuse...

In a Voronoi Diagram, when you take a point in any given Thiessen polygon, it indicates that it's closer to that generating point than to any other. [...] The post How to Sketch a Voronoi Diagram with Thiessen Polygons appeared first on GIS Geography. أكثر...

Lossless compression (like JPEG) retains values and lowers file size. However, lossy compression (like LZ77) reduces file size by eliminating redundancy. [...] The post Lossless Compression vs Lossy Compression appeared first on GIS Geography. أكثر...

Huff Gravity Model uses store size and distance along with census tract population to understand the probability that consumers will patron retail stores. [...] The post Huff Gravity Model: Who Will Visit Your Store? appeared first on GIS Geography. أكثر...

GeoTIC is one of the gvSIG Association projects which exemplifies the use of our technologies in free software for inventory management. If in gvSIG Roads is available a product for inventory management road in this project it is launched a … Continue reading → أكثر...

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There’s a new free tutorial about gvSIG in English, provided by Marwa Hassan, from Abu-Dhabi (United Arab Emirates). This new document is a project that analyzes if skatepark location in New York city are related to graffiti cleaning complaints, using … Continue reading → أكثر...