Correcting bad GPS data on Strava
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Correcting bad GPS data on Strava
Postby Arlberg » Fri May 04, 2018 4:38 pm
I'm just wondering if anyone knows of how to repair dodgy GPS data files from Strava rides? I have a handful of rides where the loss of my Garmin Edge GPS signal (usually caused by going through a tunnel or a narrow gorge etc) meant that the Garmin lost the signal temporarily, and took me off the actual route I rode and I therefore I lost a few Strava segments. The annoying thing is it often seems to happen on a never to be repeated ride/route or when pushing up an ascent for a good time! There used to be a website called Raceshape that allowed Strava users to correct route data but it seems to have been discontinued.
Is there any easy way to do it? I have about half a dozen rides I would like to correct from rides in Europe.
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Re: Correcting bad GPS data on Strava
Postby g-man » Fri May 04, 2018 7:19 pm
I’ve used it before with some success.
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Re: Correcting bad GPS data on Strava
Postby Arlberg » Sun May 13, 2018 2:02 pm
Anyone got any other suggestions?
And if someone out there with know-how is really bored and has nothing better to do, I could send them the corrupted rides and you could have a go at fixing them.....
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Re: Correcting bad GPS data on Strava
Postby bychosis » Sun May 13, 2018 2:50 pm
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Re: Correcting bad GPS data on Strava
Postby Arlberg » Sun May 13, 2018 3:44 pm
You can see one example here (of about 5 or 6 that I have) on the ascent of the Stelvio.
https://www.strava.com/activities/683303473
I got a 'KOM' for my ascent only because I was the fastest up the climb on the route calculated by Strava with the dodgy waypoints. Funnily enough it seems that since I did it three other riders also must have lost their GPS signal in the same place as me as there are now four of us on the segment comparison. You can see there are two spikes caused by a signal loss (there are tunnels there), one from the ascent and one from the descent.
As with all the rides I have where this problem has occurred, I'm trying to remove the dodgy waypoints so I can be on the official Strava segment for the ascent and compare myself legitimately with all other riders.
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Re: Correcting bad GPS data on Strava
Postby Arlberg » Thu May 17, 2018 6:06 pm
I would be really very grateful!!
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Re: Correcting bad GPS data on Strava
Postby A_P » Thu May 17, 2018 7:37 pm
work on a copy of the original gpx file if you still have it , otherwise the downloaded gpx will no have timestamp information = wont re-upload
you can drag and drop individual waypoints and save etc
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Re: Correcting bad GPS data on Strava
Postby find_bruce » Thu May 17, 2018 8:36 pm
Which do you think is the official segment see for example Vincenzo NibaliArlberg wrote:my Garmin didn't record the official segment for the Stelvio ascent?
As for editing, try Viking GPS editor - easy enough to use, just move the points to where you want them, you can manually adjust the times. Just be aware that if time runs backwards at any point Straa will reject the upload.
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Re: Correcting bad GPS data on Strava
Postby kb » Fri May 18, 2018 1:10 pm
K
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Re: Correcting bad GPS data on Strava
Postby Arlberg » Sun May 27, 2018 8:15 pm
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Re: Correcting bad GPS data on Strava
Postby kb » Sun May 27, 2018 9:22 pm
Hi,Arlberg wrote:Thanks kb, that would be wonderful if you could, I’ve sent you an email.
Try to get to it shortly but woke up in hospital Friday night / Saturday morning. Apparently hit or was hit by a car on the way home - don’t even remember th day properly anymore. Nothing seems terrible buts all a little achy currently so will be pretty quiet for a week or two (if that’s possible with a 16 month old). Next currently in a brace due to a fractured c7. There a couple of broken ribs too
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Re: Correcting bad GPS data on Strava
Postby find_bruce » Mon May 28, 2018 2:47 pm
Ouch kb, heal wellkb wrote:Hi,
Try to get to it shortly but woke up in hospital Friday night / Saturday morning. Apparently hit or was hit by a car on the way home - don’t even remember th day properly anymore. Nothing seems terrible buts all a little achy currently so will be pretty quiet for a week or two (if that’s possible with a 16 month old). Next currently in a brace due to a fractured c7. There a couple of broken ribs too
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Re: Correcting bad GPS data on Strava
Postby Arlberg » Tue May 29, 2018 7:25 pm
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