[pkg-fso-maint] tangogps and openstreetmap

[Enrico Zini]

On Sun, Mar 01, 2009 at 09:58:13PM +0100, Joachim Breitner wrote:
> Am Sonntag, den 01.03.2009, 20:36 +0100 schrieb Steffen Moeller:
> > I read through http://wiki.openmoko.org/wiki/TangoGPS#Debian and felt that it was not
> > completely right. Is the activation of the device truly necessary? Rather not, it seems,
> > at least not for me.
> Yes, it should work without activation.

It does work for me without activation.

> > The directory /root/Maps seems to find some consensus between Qtopia and Debian concerning
> > the location of OpenStreetMap data that was downloaded for offline reuse. I'd prefer to
> > use /var/cache/osm, instead. Would that sound reasonable to you as well? Or is there a
> > better location?
> Downloaded maps are user data, thus should be below ~ (i.e. /root while
> running as root, /home/someone while running as a normal user).
> That said, it should probably be in ~/.tangoGPS, to follow unix
> convention.

Agreed.  This said, I would love it if tangogps and mumpot could share
the tiles directory.  The file names are sadly different at the moment,
and I don't know if they can be made to match (but I hope so).

If that can be made to work, then ~/.local/share/maps is probably worth
considering.


> > How can I quit using tangoGPS without using the Unix shell to kill it? ALT-F4 or CTRL-Q or
> > Q don't seem to work and I don't want to use the keyboard either, really. Am I right in
> > that there is a quit-button or menu-entry missing?
> No idea.

Alt+c with matchbox (and matchbox-keyboard) works: that's what I use.

I agree it's not particularly finger friendly at the moment, but I would
think that in a platform like the openmoko, the close function is better
provided uniformly by the window manager rather than by every
application each time in a different way.


> > My GPS data is rather unreliable when staning still. Speeds of 0.7 (find but rare) via 2
> > or 3 (often) up to 9 km/h are reported when the correct speed is 0. Is there a way to help
> > with calibration of some sort? My handheld GPS receivers are better (also tracking more
> > satellites, though). Do you observe something similar?
> No idea.

What I observed is that sometimes the GPS gets an initial fix way off
(like, 50m or so off), and then it somehow realises that it made a
mistake, but instead of jumping to the right place, it slowly travels
there.  So you stand still in a place, and the gps fix is slowly moving
towards you until it catches you up.  From that point on, everything is
fine.

I like to think that the GPS realises that he's been bad, and is trying
to make it up for you by nonchalantly walking towards you whistling and
smiling, hoping that you didn't notice the mistake that it just did. :)


Ciao,

Enrico

-- 
GPG key: 1024D/797EBFAB 2000-12-05 Enrico Zini <enrico at debian.org>
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