Tag Archives: gis

The problems with representing GPX tracks in spatial databases

This is something I’ve been wrestling with for a while, both with Spatialite and latterly with Postgis. The problems stem from the fact that a GPX track segment contains information that can be represented in two entirely different ways in … Continue reading

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How to Georeference K5 Raster Maps from the Berlin Senat in QGis

I was lucky enough to get a present from the wonderfully generous Teri Rueb when she was in Berlin making an mscape project (those were the days) at the Akademie der Künste. Even though it’s out-of-date, I still like the … Continue reading

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A new category for filtering ‘rogue’ trackpoints?

Having just downloaded our GPSs for this period, I was playing around with looking at the GPX tracks in Qgis and something struck me. What you can see here is that some trackpoints are clearly ‘wrong’ or ‘inaccurate’ or just … Continue reading

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What GPS / GPX visualisation software to use in Linux

OK, so you’ve chosen a GPS, based on the last post and you’ve taken a walk with it and are itching to look at what you’ve done. There are so many sites now offering advice, mostly for Windoze of course … Continue reading

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