I woder if you could hack something up based on the upcoming "Courier Mode" feature in gvSIG Mobile:
http://gvsigmobileonopenmoko.wordpress.com/2009/06/24/with-the-new-courier-mode-openmoko-actively-guides-you-through-the-city/ Cheers, Joseph 2009/6/28 Michal Brzozowski <[email protected]>: > 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 <[email protected]> >> >> 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 >> you >> 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 >> python >> 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 >> call >> 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 >> > distance >> > 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! :) >> > >> >> -- >> View this message in context: >> http://n2.nabble.com/which-gps-app-can-do-this--tp3169715p3170060.html >> Sent from the Openmoko Community mailing list archive at Nabble.com. >> >> >> _______________________________________________ >> Openmoko community mailing list >> [email protected] >> http://lists.openmoko.org/mailman/listinfo/community >> > > > _______________________________________________ > Openmoko community mailing list > [email protected] > http://lists.openmoko.org/mailman/listinfo/community > > _______________________________________________ Openmoko community mailing list [email protected] http://lists.openmoko.org/mailman/listinfo/community
