September 1, 2017
by chris
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Some readers have already been waiting for this – i have now completed my initial review of the ArcticDEM elevation data set which is being produced and published in several stages during this year by the University of Minnesota and … Continue reading
August 5, 2016
by chris
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When NASA after the SRTM (shuttle radar topography mission) in 2000 released the first SRTM data (the latest version of which i reviewed previously) this was for large parts of the wold the first detailed relief information available at all … Continue reading
November 21, 2015
by chris
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Relief rendering is one of the key elements of my maps and the generalized shading used is a fairly unique feature among digital maps available today. I developed some improvements in this field i want to introduce here. Shaded relief … Continue reading
August 19, 2015
by chris
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Recently the USGS released the last part of the SRTM i second data set. I updated the elevation data search tool to include that – you can now find all 1 arc second tiles available there, just check Global SRTM … Continue reading
January 20, 2015
by chris
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The Atlas Mountains views introduced in the previous post are my first use of the SRTM high resolution data in 3d rendering. Here a higher resolution crop for comparison (first is the 1 arc second data, second 3 arc seconds): … Continue reading
October 4, 2014
by chris
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It has recently been announced that now, 14 years after the original data acquisition, SRTM data in high resolution that was previously only available for the United States territory is now going to be made available for the whole covered … Continue reading
July 1, 2014
by chris
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Map design and Geo-Visualization is to a huge part about abstraction. To illustrate this here is an example from my standard demo map from the Western Alps and a 3D perspective view of the same area. These two illustrations make … Continue reading
May 24, 2014
by chris
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When updating the demonstration map recently I have made some changes to the standard style, most notably the bare ground color in the landcover style is now modulated based on climate with more reddish color in the warm desert regions … Continue reading
May 20, 2014
by chris
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In addition to the mapping of the De Long Islands i produced an improved elevation model using the shape from shading techniques described earlier. Here is a shaded relief rendering of Bennett Island produced from this. This elevation data is … Continue reading
January 28, 2014
by chris
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As mentioned in my post on the Severnaya Zemlya map i there for the first time used shape from shading techniques to improve a low quality elevation data set with the help of satellite imagery. Here a few more explanations … Continue reading