[OSM-talk] Cleaning up GPX files

[Andy Robinson]

Barnett, Phillip wrote:
>Sent: 11 May 2007 12:01 PM
>To: Jose R. T. D.; Jonas Svensson
>Cc: talk at openstreetmap.org
>Subject: Re: [OSM-talk] Cleaning up GPX files
>
>I use a Garmin Legend Cx, and I turn off GPX logging just before I switch
>the unit off. When I turn the unit back on, I wait until it has a good lock
>before I re-enable logging. Obviously this might be tricky if you’re
>already driving, but maybe you can do something similar?
>

I've used that method plenty of times. Also, if your log needs converting
from NMEA to GPX then you can set the time and also accuracy (HDOP etc)
limits to remove bad data during the conversion with gpsbabel.

Finally you can open the GPX file in a text editor and delete the data at
the beginning and end of the log using the timestamps as a reference for the
amount to dump.

Cheers

Andy

Andy Robinson
Andy_J_Robinson at blueyonder.co.uk

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>From: talk-bounces at openstreetmap.org [mailto:talk-
>bounces at openstreetmap.org] On Behalf Of Jose R. T. D.
>Sent: 11 May 2007 09:56
>To: Jonas Svensson
>Cc: talk at openstreetmap.org
>Subject: Re: [OSM-talk] Cleaning up GPX files
>
>
>
>AFAIK, newer cars windscreens filter a lot of radiation, perhaps explaining
>why your GPS device is giving so inaccurate fixes. Try placing your device
>somewhere else in the dash...
>
>
>¡Salud!
>
>On 5/11/07, Jonas Svensson <jonass at lysator.liu.se> wrote:
>
>On Thu, 10 May 2007, Adam McLeod wrote:
>
>> Hello,
>>
>> I have a number of GPX traces that I would like to upload to the OSM
>> project.  My problem is that most of the traces have incorrect data where
>> I shut down the GPS unit in the middle of making a track.  Does anyone
>> know of any software (preferably java, or for linux) that will let me
>> replay the GPX file point by point and delete the bad sections?
>>
>> Thank you,
>>
>> Adam McLeod
>
>I am not sure but I think you can load the gpx-file in JOSM, delete
>bad
>points and then save again, or maybe even upload directly from JOSM.
>
>/Jonas
>
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