I was tracking tourist's movement patterns in a city with GPS and I would like to know the speed of all participants (60). The data were recorded and saved in gpx files, so in order to open it and work with it in QGIS, I converted the tracks from gpx to KML and SHP. I would like to know the speed of participants, but the only data I have is a track with points without any information about their speed. I was wondering if there is a program that could calculate and vizualize the speeds.
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