Thanks Guys, I am trying to lurk on the user list and copy down code examples again.
Justin your page has moved over here: - http://docs.codehaus.org/display/GEOTDOC/Graphs And the example added. > Hi Jerry, > > Once the graph is built each, edge#getObject() will hold the original > feature used to built it. So something like > > for ( Iterator e = graph.getEdges().iterator(); e.hasNext(); ) { > Edge edge = (Edge) e.next(); > Feature feature = (Feature) e.getObject(); > .. > } > > Good question Jerry. Any chance you want to help me out by adding this > to the code sample page? > > -Justin > > Swan Jerry wrote: > >>> I have updated that page with a more recent example >>> >> Thanks. Given a graph that has been constructed in this fashion, how >> should I convert it back into a FeatureCollection? >> >> I ask because the 'obvious' solution, i.e. using >> someFeatureCollection.addAll( graphGetNodes() ) and addAll( >> graph.getEdges() ), gives a ClassCastException from BasicNode to >> Feature. >> >> Jerry. >> >> -----Original Message----- >> From: Justin Deoliveira [mailto:[EMAIL PROTECTED] >> Sent: 04 April 2007 19:40 >> To: Swan Jerry >> Cc: [email protected] >> Subject: Re: [Geotools-gt2-users] Simple graph question >> >> Hi Jerry, >> >> I have updated that page with a more recent example of how to build a >> graph from features on geotools 2.3.x and above. >> >> Note, i realized that there was a big that has been fixed on trunk, >> which i just back ported to 2.3.x. You can get around it though by using >> lineStringGen.getGraph() instead of featureGen.getGraph(). >> >> If you are working from sources though just update and the example >> should be just fine. >> >> Let me know how it works for you. >> >> -Justin >> >> Swan Jerry wrote: >> >>> Given a FeatureCollection, I'd like to build an (undirected) graph >>> directly corresponding to its feature geometry, i.e. having a node for >>> >>> each point. >>> >>> Would someone kindly recommend the simplest graph building strategy >>> for this? >>> >>> In particular, the example at >>> http://docs.codehaus.org/display/GEOTOOLS/Graphs doesn't appear to be >>> current - AFAIK there's no org.geotools.graph.build.LineGraphBuilder >>> in GT2.3.0 (whearas there are of course >>> org.geotools.graph.build.line.BasicLineGraphBuilder etc). >>> >>> Thanks once more, >>> >>> Jerry. >>> >>> This message has been checked for viruses but the contents of an >>> attachment may still contain software viruses, which could damage your >>> >> computer system: >> >>> you are advised to perform your own checks. Email communications with >>> the University of Nottingham may be monitored as permitted by UK >>> >> legislation. >> >>> ---------------------------------------------------------------------- >>> --- Take Surveys. Earn Cash. Influence the Future of IT Join >>> SourceForge.net's Techsay panel and you'll get the chance to share >>> your opinions on IT & business topics through brief surveys-and earn >>> cash >>> http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEV >>> DEV _______________________________________________ >>> Geotools-gt2-users mailing list >>> [email protected] >>> https://lists.sourceforge.net/lists/listinfo/geotools-gt2-users >>> >> -- >> Justin Deoliveira >> The Open Planning Project >> [EMAIL PROTECTED] >> >> This message has been checked for viruses but the contents of an attachment >> may still contain software viruses, which could damage your computer system: >> you are advised to perform your own checks. Email communications with the >> University of Nottingham may be monitored as permitted by UK legislation. >> >> >> ------------------------------------------------------------------------- >> Take Surveys. Earn Cash. Influence the Future of IT >> Join SourceForge.net's Techsay panel and you'll get the chance to share your >> opinions on IT & business topics through brief surveys-and earn cash >> http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV >> _______________________________________________ >> Geotools-gt2-users mailing list >> [email protected] >> https://lists.sourceforge.net/lists/listinfo/geotools-gt2-users >> > > > ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ Geotools-gt2-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/geotools-gt2-users
