which gps app can do this?
rusolis at poczta.fm
Sun Jun 28 17:37:27 CEST 2009
Alternatively, place POIs along the coast (how dense depends on the accuracy
you want to have). Calculate the minimum distance from the set of POIs.
2009/6/28 mqy <meng.qingyou at gmail.com>
> hi lanzo,
> I have to say that your problem is interesting, but it's a bit too specific
> for a GPS application to do this.
> One quick and dirty solution is:
> You write a small application which:
> 1) calculate a polygon area which contains the allowed range. to do this
> have to use web map or standalone map. The polygon nodes are lat/lon pairs.
> 2) get GPS fix from fso ogpsd through DBUS API. this is not difficult with
> 3) periodically (say every five seconds) test if current position goes out
> of predefined area.
> if the test result is true, then warn with sound (aplay command).
> To see where you are, you can run a GPS application at the same time.
> I'm the writer of omgps, I'm planning to extend omgps to solve this kind of
> problem --
> allow user register his/her python script as plugin, omgps periodically
> each plugin,
> passing parameters of current lat/lon/altitude, etc. Periodically can be
> defined as: (1) on each fix (2) every N seconds.
> Welcome your feed back :)
> lanzo wrote:
> > Hi!
> > I'd like to be using my FR on my little boat as marine GPS. I was curious
> > if, in your opinion, it could be possible to constantly show the
> > between me and the nearest point on the coast line. This would be
> > important because in my country (and i guess everywhere) there are rules
> > about the little boats distances from the coast and I cannot overcome 3
> > nautical miles.
> > I know it should be possible to show the distances between my present
> > position and any given point, but what about something always displaying
> > the distances between my position and the nearest point on the coast?
> > is there maybe any more in-topic forum where i can ask this?
> > Thank you very much for any answer!
> > bye! :)
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