January 2, 2026
by chris
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I have written about display of various landforms and topographic features in maps previously – in particular linear elements like cliffs, ridges and gullies. But there is one terrain form that stands out as uniquely iconic in maps – that … Continue reading
May 28, 2023
by chris
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I have – after many years – made an update to the generalized map rendering demonstration on maps.imagico.de. Since i have first shown this demo i made several improvements to the underlying generalization processes, some of which i have discussed … Continue reading
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
June 20, 2015
by chris
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Digital elevation data is an important basis of map production and geodata processing these days. I have written about elevation data sources and use of such data previously on several occasions. SRTM data is the most widely used elevation data … Continue reading
November 27, 2014
by chris
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After the initial release of data for Africa the USGS has put up more full resolution SRTM data for Europe and America – still missing are only Asia and Australia. I updated the elevation data search tool accordingly.
August 11, 2014
by chris
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Earlier this year i showed some examples how shading information in satellite images can be used to improve elevation data with additional details. Since then i have occasionally been looking into how such techniques can be also used outside polar … 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