[OSM-talk] relating trace points to gpx files

[Andrew Loughhead]

On Fri, 2006-07-14 at 09:59 +0200, Erik Johansson wrote:
> On 7/14/06, Andrew Loughhead <andrew at incanberra.com.au> wrote:
> > On Wed, 2006-07-12 at 10:57 +0200, Erik Johansson wrote:
> > <--snip-->
> > > A far as I know (from reading the code)  when you delete a GPX file,
> > > the points will be marked invisible. So they will disappear from the
> > > rendered images.
> [...]
> > I have been able to delete all my files and start loading them
> > individually, checking each result in JOSM.
> 
> Oh no... This thing about deleting GPX traces. I don't like it, we
> should never make people delete the files. I think it's blasphemy to
> remove data from the traces db.

I have finally found my problem file. As is traditional, it was the last
file I looked at. I have deleted the 20 odd garbage track points, and
all data has been re-sent to OSM.  So far the applet display still shows
the bad points. 

I could have found the bad data without deleting files from OSM, if I
had tried a little harder (or to be honest, actually turned my brain
on). But it was an effective, if tedious, way of finding where the bad
points came from. 

Andrew.





> 
> I also use josm and I do it like this:
> 1. load GPX file
> 2. download GPS traces for that area
> 3. upload GPX file to OSM
> 4. edit
> 
> 
> > One question for the list: in JOSM it seems that if raw gps mode is used
> > for an OSM download, that all points in view are treated as being a
> > single track, based on sequential time stamp?  The result being that
> > relatively random straight segments appear just because there happen to
> > be some track points in view?  The manual doesn't really say.
> 
> The traces downloaded from the server are just dots on a map nothing
> more. As far as I can remmeber they have no metadata.
> 
> You should always create OSM data layers from a GPX file you yourself
> have created. Never from traces that is downloaded from the server.
> And I'm not quite sure why it's not strictly verboten. Imi?
>