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Sometimes rate in track has very high value...

ulmus shared this question 9 years ago
Answered

Seldom but it sometimes happens... i am riding my bicycle and import

some gpx files into locus. Some of the tracks has strange, very high

value of rate, about 288km/h! I dont know what is the cause of that, so i

am asking that question here, maybe someone had similar issue and can

help me with that. It destroy my statistics and i dont know how can i

solve that. Is it an error of gps, locus or gpx foprmat? Maybe someone

has solution for such errors?

Replies (8)

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1

please attach an example file or post a link

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1

In attachement tthere is the track that has over 200km/h on my bike:)

on locus and some other online services it is the same, but only on one online service all is correct, max is about over 30km/h (trackprofiler).

photo
1

Your Locus Version?

because in last beta looks ok


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1

I see... i gave downloaded track from another place, not original...

Now in attachement is file exported from Locus, not edited anywhere.

If you were so patient to look into it once again...

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1

slowly.. :)

first gpx was the original (downloaded from any website) and it was ok.

then you import this file into locus

and then you export it??

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1

Ok, slowly...

i downloaded gpx from my gps receiver into locus and that was the second file i uploaded here.

The first file uploaded here was the file i edited somewhen, somewhere else, it was just easier to upload here that file and i didnt remember that it was edited, so... that's why i uploaded the first file.

Maybe when i was editing gpx file, i had deleted some points with so high speed...

So... maybe gpx has errors or receiver had weak signal or something but i looked into gpx file and couldnt find speed value of 222km/h as i can see in locus statistic now (the second file uploaded).


edit:

i did regex "speed>\d\d\d" and havnt found any three digiti speed value

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1

Ohh, you edit the file by yourself...


Speed is calculated from point to point (time, distance)


So i can help here.

Please try to edit your file with an other trackeditor.

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1

:) thanx for your pationce but gpx with 222km/h was not edited, it was just downloaded from my gps receiver.

I noticed that my receiver gives <speed> meta in gpx... i dont know if it is an standard but maybe locus should take that meta of the trackpoint if it exists in data?

And if i would edit gpx on my own, i could only delete ponits, not edit them, so it couldn't get speed so high if i would delete points, could it? No way, maths is maths.

So... conclusion is that gpx has some error data (maybe long jump of position when i was under the trees or something that could generate so high speed) but i have <speed> meta in track point data record, maybe locus should handle that in the future?

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