[OSM-talk] working with GPX

[Andrew Errington]

On Tue, December 27, 2011 06:05, Frans Thamura wrote:
> hi all
>
> i am working with GPX now.. using OSMTracker..
>
> this is the pics of the screenshot after put in JOSM
>
> see this track
>
> from my home to my meruvian camp
>
> https://www.facebook.com/photo.php?fbid=10150544442494085&set=a.101505444
> 39799085.432882.675689084&type=3&theater
>
>
> any comment?
>
> why the track cannot follow the street..
>
> i am using Samsung Nexus S with OSMTrack

There are many reasons.  Here are a few, maybe it's the cause in your
situation.

1) GPS is not accurate all the time
2) Accuracy varies over time, especially in areas with tall buildings
3) GPS software doesn't record every point- it tries to be 'smart' to save
memory space for the log

Don't worry too much about it, but maybe you can find some configuration
settings on the Nexus S that will alter the GPS logging.

When mapping, I generally record several tracks (they are all different,
even on the same piece of road) then I visually 'average' the tracks and
draw a way that is the average of the tracks.  I also use the tracks to
check and align the aerial photos- sometimes they are misaligned too.

Best wishes,

Andrew