[Talk-is] GPS trökk á höfuðborgarsvæðinu

[Ævar Arnfjörð Bjarmason]

On Fri, Mar 13, 2009 at 6:55 PM, Thorir Jonsson <thorirmar at gmail.com> wrote:
> I was obviously to quick to hit reply last time, as the file you refer
> to Ævar, already has all the tracks in separate files.
>
> Now I just have to clean up the tracks a bit, removing erroneous
> points and such.  I should have a video ready in a few days, depending
> on what time I find.

For what it's worth I tried to render these tracks for around 8 hours
while I slept on my dual core Intel Core 2 Duo 2.26G with 2GB of
memory and when I checked it in the morning the python process was at
100% cpu using up nearly all the memory and the out_m.mpg file was
still at 0 bytes.

That was with all 1.4 GB of tracks however, you might have more luck
with a more limited dataset, especially with cut-down tracks.

I didn't find a utility to cut down the gpx tracks to a bbox however.

This is limited to waypoints and doesn't support trackpoints:

http://www.gpsbabel.org/htmldoc-1.3.5/filter_polygon.html

This might work but only supports bbox cropping if you edit the
source, and even then claims the feature is experimental:

http://wiki.openstreetmap.org/wiki/Perl_Scripts#osmtrackfilter.2Fosmtrackfilter.pl

JOSM's editgpx plugin might be able to do it, and utilities like Viking though.