Teaching

Supercomputer speed records: World’s fastest machines

June 2013 – Today: Tianhe-2 With the Tianhe-2, a machine capable of performing more than 33 quadrillion calculations per second at launch, China once again took the top spot from the US and, so far, has managed to hold onto it. Deployed at the National Supercomputer Center in Guangzho, it is the successor to the Tianhe-1. The Tianhe-2, otherwise known as the Milky Way 2, has 16,000 nodes, each with two Intel Xeon E5 Ivy

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Discover the Power of Spatial Analysis in Esri’s Massive Open Online Courses

Learn what Spatial Analysis can do for you and your career Try this no-cost training course and learn why companies throughout the world use GIS as a fundamental part of the decision making process. You’ll learn how data-driven maps and spatial analysis tools help people detect patterns, make predictions, and solve problems. And consider adding Esri’s free series of GIS-focused massive open online courses (MOOCs) to your corporate training program. In a recent article published

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What is the difference between average, mean, median, and mode?

Mean (or arithmetic mean) is a type of average. It is computed by adding the values and dividing by the number of values. Average is a synonym for arithmetic mean – which is the value obtained by dividing the sum of a set of quantities by the number of quantities in the set. An example is (3 + 4 + 5) ÷ 3 = 4. The average or mean is 4. Two other common forms

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Future trends in geospatial information management: the five to ten year vision

A new report setting out the five to ten year vision of the rapidly growing geospatial information industry has been published by the United Nations Committee of Experts on Global Geospatial Information Management (UN-GGIM): Executive Summary This 2015 edition of the Future Trends report recognises that the most significant changes in the geospatial industry will come not through a single technology, but rather from linking multiple technologies and policies. The first part of the report,

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Q: How can I create a DEM from contour lines?

Answer Depending on what you want to use the resulting raster for, there are a few alternatives. It is possible to generate a DEM from a contour line shapefile, though some methods will tend to have “stair-step” artifacts and lower spatial resolution than the original data. Adding data from other sources and pre-processing your contours can reduce these problems. You can use the contour lines as input to build a TIN, and then export the

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