I continue using gpx2spatialite as described in my older article on Xubuntu16.04.
But Xubuntu16.04 is a little old in year 2020. So I decide to upgrade into Xubuntu20.04.
The following is installation process of gpx2spatialite on Xubuntu20.04.
These steps are confirmed on clean install of Xubuntu …
read moreAfter implementing timestamp as M-value on SpatiaLite + QGIS as described in the previous article,I tried making moving point animation with QGIS and TimeManager plugin following Anita Graser's another article.
However, point doesn't move in real-time. When I move TimeManager's slider, I have to wait a few seconds to see …
read moreAfter spending weeks playing with my own 2-year GPS log, I wanted to colorize each track gradiently based on velocity.
While it sounds straight-forward to use the "trackpoints" table in the same SpatiaLite database to achieve this, it turned out not so. Plotting millions of points is quite slow and …