Differences

This shows you the differences between two versions of the page.

--- en:kaarten:eigen_kaart [2019/02/26 21:35] – Edwin Wisse
+++ en:kaarten:eigen_kaart [2024/12/09 20:11] (current) – external edit 127.0.0.1
@@ Line 1: / Line 1: @@
+====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}}