[OSM-dev] Tracks without timestamps

[Joerg Ostertag (OSM Munich/Germany)]

On Wednesday 10 January 2007 11:28, Frederik Ramm wrote:
> Hi all,
>
>     as this is my first post, let me briefly introduce myself: My
> name is Frederik Ramm and I have been interested in mapping and self-
> acquired geodata for a long time (see my 2001 project http://
> www.remote.org/roadhog/scotland/ and the "making of" pages there). I
> have played around with the "josm" editor and found it to be so well-
> structured and clearly written (thumbs up Imi ;-)) that it was very
> easy to work with as a programmer; I'll probably do some work in that
> area, writing plugins and submitting ideas and patches for josm.
>
> I have seen from the archives that there has been discussion about
> whether the server sould allow tracks without timestamps (it
> currently rejects them).
>
> Just for the record: I am using a recent hand-held aviation GPS, the
> Lowrance AirMap 600C, and this (as well as other Lowrance GPSes)
> cannot be persuaded to save time information with tracks. What you
> get is one initial timestamp when the track begins, and from then on,
> only position data. You can theoretically reconstruct the timestamps
> IF you have the device set to add trackpoints every n seconds
> (instead of every n metres or on every course change).
>
> If I want to upload a track created by my GPS (newer versions of
> gpsbabel can convert the "lowranceusr" format emitted to gpx), I need
> to feed the resulting gpx file through a perl script to create bogus
> timestamps:

http://svn.openstreetmap.org/utils/osmfilter/osmfilter.pl
can add timestamps for you. And some more stuff.

-
Joerg