Peter Fay wrote: > Jody - > I looked over the routing algorithms in org.geotools.graph. They look very > good. > yes they are, been used in production settings etc... um Justin the module maintainer is off on holiday for two weeks so you may not get help promptly for a bit. > I am looking for routines that can create a route around islands and > coastlines - We have some code for that, think you can find it on the JCS project - I cannot pronounce the math but Brent from the geoserver project knows more. > I believe I need some routines to create visibility graphs > around convex hulls. Are you aware of any methods for this or anyone doing > this kind of work? > I did that kind of stuff for DEMs once - pretty cool. Not aware of a free implementation anywhere off the top of my head. But yes if you want to play I am sure Justin would be more then happy to accept a patch :-)
Jody > -Peter > > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Jody > Garnett > Sent: Monday, June 05, 2006 4:29 AM > To: sherif attia > Cc: Geotools users list > Subject: Re: [Geotools-gt2-users] geotools > > sherif attia wrote: > >> Message body follows: >> >> dear sir, >> >> i am willing to develop a map navigation system on a PDA >> so there are somethings i would like to know about geotools >> >> first, is it supported by J2ME second, does it support routing on GIS maps >> > ?? > >> >> > J2ME? I think I have seen someone use it there, may need to grab a > branch and remove dependence on things > like JAI for raster support. Out of the box no, anything important that > J2SE specific - advanced raster support. > > The hard part of routing is data, and data collection. GeoTools does > contain an excellent graph package that supports > some routing algorithms. But for a real system you need to know a lot of > details about say the roads being navigated, what > way you can turn at intersections what direction the roads are in > etc... If you have that information you can easily feed it > into the GraphBuilder and perform queries etc... > >> meaning: i have GIS map, shape file--> can i use geotools >> to turn it to form of network ( nodes and edges ) so that >> i can apply dijkstra and if that possible, what packages i need to use?? >> >> thanks for your help >> >> > ext/graph, the tutorial is okay, and the module has the highest test > coverage (a measure of quality) in the library. > Jody > > > > _______________________________________________ > Geotools-gt2-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/geotools-gt2-users > > > > _______________________________________________ Geotools-gt2-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/geotools-gt2-users
