On 18 May 2008, at 08:54, Tom Hughes wrote:

> In message <[EMAIL PROTECTED]>
>          Shaun McDonald <[EMAIL PROTECTED]> wrote:
>
>> On 18 May 2008, at 08:22, Tom Hughes wrote:
>>
>>> The timestamps should be in the original GPX file produced by
>>> gpsbabel so that should be uploadable, and it is the original
>>> trace we want, not something that has been heavily converted.
>>
>> They are in the GPX file, but how do you edit the GPX file to remove
>> the garbage points?
>
> Well I don't very often need to - it's only on the rare occassions
> that it decides to stick in a point a few hundred miles out of place
> that I worry about it.
>
> In that case it is usually odd points and I fix them manually by
> editing the GPX file in a text editor and removing them ;-)
>

It is a lot easier to do this task graphically.

> I'm not aware of any automated filters that will handle that kind
> of cleanup anyway.
>

Another one that I've used JOSM for is to split a track into small  
sections, where I've only wanted a smaller portion of it for whatever  
purpose.

Shaun


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