[OSM-newbies] comparison between gpx results

[Francis Augusto Medeiros]

Dear folks,

I'm on the quest of the perfect free solution to get GPX tracks for  
OSM'ing my town. I use a Holux GPS with a smartphone (Nokia E61).

I was using GPS Track before, but it annoys me that it doesn't do an  
auto save to a local file, and that it gets data at minimium 2 sec  
interval.

Then I tried Mobile Trail Explorer, which is a bit buggy, but much  
more smoother (it does the saving to a local file automatically, but  
takes longer to save stuff).

But my results with Mobile Trail Explorer were very inconsistent when  
I compared them with GPS Track.

It seems that the numbers on GPS Track were much more realistic than  
those from Mobile Trail:

Take a look:

creator="GpsTrack - http://www.qcontinuum.org/gpstrack"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http:// 
www.topografix.com/GPX/1/0"
xsi:schemaLocation="http://www.topografix.com/GPX/1/0 http:// 
www.topografix.com/GPX/1/0/gpx.xsd">
<trk>
<name>2007-03-09 08:23</name>
<trkseg>
<trkpt lat="-14.85533120185395789" lon="-40.82430315644915563"></trkpt>
<trkpt lat="-14.85533120185395789" lon="-40.8242602407570328"></trkpt>
<trkpt lat="-14.85535265970001931" lon="-40.8242602407570328"></trkpt>
<trkpt lat="-14.85535265970001931" lon="-40.8242602407570328"></trkpt>
<trkpt lat="-14.85535265970001931" lon="-40.82428169860309422"></trkpt>
<trkpt lat="-14.85535265970001931" lon="-40.82428169860309422"></trkpt>
<trkpt lat="-14.85537411754608072" lon="-40.82428169860309422"></trkpt>
<trkpt lat="-14.85537411754608072" lon="-40.82430315644915563"></trkpt>

<gpx version="1.0" creator="Mobile Trail Explorer" xmlns="http:// 
www.topografix.com/GPX/1/0">
<trk>
<trkseg>
<trkpt lat="-14.848281666666667" lon="-40.83770333333333">
<time>2007-04-02T19:06:00Z</time>
</trkpt>
<trkpt lat="-14.848281666666667" lon="-40.83770166666667">
<time>2007-04-02T19:06:00Z</time>
</trkpt>
<trkpt lat="-14.848281666666667" lon="-40.8377">
<time>2007-04-02T19:06:00Z</time>
</trkpt>
<trkpt lat="-14.848281666666667" lon="-40.837698333333336">
<time>2007-04-02T19:06:00Z</time>
</trkpt>
<trkpt lat="-14.848283333333333" lon="-40.837698333333336">
<time>2007-04-02T19:06:00Z</time>
</trkpt>
<trkpt lat="-14.848283333333333" lon="-40.837696666666666">
<time>2007-04-02T19:06:00Z</time>
</trkpt>
<trkpt lat="-14.848283333333333" lon="-40.837695">
<time>2007-04-02T19:07:00Z</time>
</trkpt>
<trkpt lat="-14.848286666666667" lon="-40.837693333333334">
<time>2007-04-02T19:07:00Z</time>


While GPS Track has very different numbers after the dots, Mobile  
Track repeats a lot, looking like it interpolates stuff.

Is my way of thinking right? Should I stick with GPS Track then?

Cheers,

Francis