Hi Jerry, The process is similar, just use a BasicLineGraphGenerator. I have updated the page with an example.
-Justin Swan Jerry wrote: > What's the simplest way to create a Feature from a LineSegment? > >> Any chance you want to help me out by adding this to the code sample > page? > Someone seems to have beaten me to it while I was on holiday ;-) > > Jerry. > > -----Original Message----- > From: Justin Deoliveira [mailto:[EMAIL PROTECTED] > Sent: 05 April 2007 15:52 > To: Swan Jerry > Cc: [email protected] > Subject: Re: [Geotools-gt2-users] Simple graph question > > 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=DE >>> V 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=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 -- Justin Deoliveira The Open Planning Project http://topp.openplans.org ------------------------------------------------------------------------- Take Surveys. Earn Cash. 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