On Tue, Dec 1, 2020 at 11:18 AM Warin <61sundow...@gmail.com> wrote: > The 'Auto' setting may not be 'optimal' for what you want, but as a > compromise between data bloat and resolution/accuracy it maybe better than > a fixed time as judged by the developer/manufacture. > For not 'optimal' I mean that with the same number of points you can approximate better the same curve.
Just found this gpxsimplify tool (https://github.com/tkrajina/gpx-cmd-tools) that can reduce the number of points of a recording done with "1Sec" to the same number of points of the "Auto" settings allowing only a maximum error of 30cm. It uses the Ramer–Douglas–Peucker algorithm https://en.wikipedia.org/wiki/Ramer%E2%80%93Douglas%E2%80%93Peucker_algorithm
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