On Mon, May 2, 2011 at 5:00 PM, Carsten Haitzler <ras...@rasterman.com> wrote: > On Mon, 2 May 2011 20:20:04 +1000 David Seikel <onef...@gmail.com> said: >> On Mon, 2 May 2011 16:12:14 +0900 Carsten Haitzler (The Rasterman) >> <ras...@rasterman.com> wrote: >> > On Sat, 30 Apr 2011 19:28:31 +0900 sangho park <gouach...@gmail.com> >> > said: >> > >> > > some years ago, i made route application using local map data. >> > > at that time, dijkstra's algorithm was a perfect solution. >> > > now I'm downloading 'asia.osm.bz2'. it is 2.3 Gbytes.. >> > > the size is reasonable for recent mobile external memory. >> > >> > did it take into account speed limits, traffic lights, possible >> > traffic patterns at times of day, favor routes with fewer "turns" or >> > (right turns on right-side-of-road driving maps, vs left turns on >> > left-side-of-road driving maps etc.), know about tolls, highways vs >> > local roads and more. as best i know about the whole mapping and >> > routing world there is a massive amount of such more fuzzy logic >> > involved in making a good mapping/routing algorithm and it requires >> > both lots of extra metadata and "fuzzy logic". users also should be >> > able to tweak the route "shortest distance", "fastest trip", "least >> > number of turns", "favor highways", "avoid tolls". this is where the >> > whole work reallly becomes meaty. :) >> >> Lucky for my purposes, I'm walking and don't need any of that fancy >> stuff. B-) > > u'd need the "can get there by foot" option :) many times a road exists that > allows cars but not pedestrians :) > >> Something simple and flexible to start with would be great. With the >> ability to add modules for the fancy things. >> >> Things like "avoid current traffic jams" would require 'net access >> anyway. > > sure but general "it's 5:30pm and its a good idea to avoid road X because > statistically its jammed around that time" can be part of your road data set. > :) > >> On the other hand, things like "favour routes near reliable sources of >> water" would be good for me. Though I doubt that data would be >> available. > > sure... roads near the ocean will do :)
Hum, a better option will be drinkable water ! Ocean isn't that nice to drink :-) -- Cedric BAIL ------------------------------------------------------------------------------ WhatsUp Gold - Download Free Network Management Software The most intuitive, comprehensive, and cost-effective network management toolset available today. Delivers lowest initial acquisition cost and overall TCO of any competing solution. http://p.sf.net/sfu/whatsupgold-sd _______________________________________________ enlightenment-devel mailing list enlightenment-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/enlightenment-devel
