Hi,
I'm using a bgt31 gps device which measures Speed very accurate using doppler.
It can also output a gpx file with speed tags like this:
<trkpt lat="51.384988333" lon="14.547046667">
<ele>112.440000</ele>
<time>2011-04-29T14:37:47Z</time>
<course>4.850000</course>
<speed>7.937878</speed>
<fix>3d</fix>
<sat>6</sat>
<hdop>1.400000</hdop>
</trkpt>
It would be nice if topofusion would use the Speed tag for its Speed calculations/statistics/Multiplayback/diagrams.
That way the errors during Speed calculations can be avoided with this kind of data.
Let me know if you need more data,
best regards,
disi