Edwins wiki

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====My map====

{{ fotos:kaarten:eigenkaart01.png?200}} Over the years i have recorded
my location during travels and holidays using satellite navigation
receivers. It is nice to be able to see where you've been once your
back home. Like photo's maps make you recall memories, especially when
you can see on a map exactly where you've walked. My personal map is
based on some ten years of data, all collected using a series of
satellite navigation receivers. The first one, a Garmin GPS-12 had
limited memory and while on holiday i had no means of downloading the
files to a computer. So the first years it was mostly waypoint
collection. These days i store every trackpoint, up to one per second.

{{fotos:kaarten:eigenkaart02.png?200 }} The data from the satellite
navigation receivers is stored as GPX files containing waypoints and
trackpoints. OVer the years that results into a lot of files. Plotting
all files on a map becomes impractical. So i started feeding all data
into a (Postgis) database. A database gives you the possibility to
recompute tracks from the separate trackpoints and to compute
statistics. The whole database can easily be visualised using a GIS
application like Qgis.  With a mapserver the map can be made available
as a [[http://wisze.github.io/|webmap]].

{{ fotos:kaarten:eigenkaart03.png?200}} The webmap shows more than
just the waypoints and trackpoints. Using a script i have computed new
tracks from the data and statistics over areas. Because everybody is
drawing hexagons now i have computed the statistics per
hexagon. Hexagons also make sense. They are the best way to pack areas
on a map.

{{tag> en:geography en:map en:digital}}