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Re: [sumo-devel] NBEdgeCont::splitAt(), split on left to model left turn pocket
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From: Jakob E. <nam...@go...> - 2016-06-22 05:55:46
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Hello, - for getting rid of gaps you need to customized the whole edge geometry (either via plain-xml or Netedit es described here: http://sumo.dlr.de/wiki/NETEDIT#Specifying_the_complete_geometry_of_an_edge_including_endpoints ) - there should be no need to create more than one node as you can increase the lane count directly from 2 to 4 (in xml as well as in netedit) - reversible lanes are not directly supported right now. The best you can do is to add an extra lane to both directions (so that both lanes are in the same place) and close either one of the lanes using TraCI. We have plans for enhancing model support in near future. - Two-way-left-turn lanes are not directly supported either. Currently the closest modeling approach is to add an extra lane to both directions (so that both lanes are in the same place) and live with the fact that vehicles may sometimes stand in the same spot - I'm not sure how a center two-way lane differs from a two-way-left-turn-lane but the most likely the same answer applies. All model support for bidirectional use of the same lane is currently limited to overtaking where one direction 'owns' the lane and the other direction is subordinate. regards, Jakob 2016-06-21 23:58 GMT+02:00 Yifeng Zeng <ze...@li...>: > Hello Jakob, > > > > Thanks for your help. I am now able to get the left turn pocket by using > split in edg.xml (as “1.” shown in the pic) > > > > Would you please let me know if there is a way to eliminate the gap > between the westbound and eastbound edges? (as “2.” shown in the pic) > > > > > > And also, I managed to add the right turn pocket by using NBEdgeCont > ::splitAt() in netconvert/netedit, I have to create another node separate > based on node 2i.70/2o.70 to split the edge and specify the pos=1 (cannot > be “0”). (as “3.” shown in the pic) > > > > myTestEdgeCont.splitAt(dc, edge(2i.70->0), 1, nA, edge(2i.70->nA), > edge(nA->0), 3, 4, -1, 0); > > myTestEdgeCont.splitAt(dc, edge(2o.70->2), 1, nB, edge(2o.70->nB), > edge(nB->2), 3, 4, -1, 0); > > > > > > Would you please tell me if I can add the right turn pocket exactly at the > node 2i.70/2o.70 position? So that fewer unnecessary edges will be created. > > And is there any way to eliminate the gap between those westbound and > eastbound edges? (as “4.” shown in the pic, similar to “2.”) > > > > > > At last, how does SUMO model the reversible lane, center two-way lane (or > two-way left turn lane)? > > I see in the wiki > http://sumo.dlr.de/wiki/Networks/Building_Networks_from_own_XML-descriptions#Neighboring_opposite-direction_Lanes > > And tried it, but it seem that this does not model one lane with two > directions? Would you please also let me know how can I model a center lane > with dual-directions? > > > > > > My test network is attached below. > > Again, thank you very much for your consistent help and prompt reply. > > > > > > Best, > > > > Yifeng > > > > > > > > <nodes> > > > > <node id="0" x="0.0" y="0.0"/> > > <node id="1" x="-100.0" y="0.0"/> > > <node id="2" x="+100.0" y="0.0"/> > > <node id="3" x="0.0" y="-100.0"/> > > <node id="4" x="0.0" y="+100.0"/> > > <node id="X" x="+50.0" y="+50.0"/> > > <node id="Y" x="+100.0" y="+50.0"/> > > </nodes> > > > > > > <edges> > > <edge id="1i" from="1" to="0" numLanes="3" /> > > <edge id="1o" from="0" to="1" numLanes="2" /> > > > > <edge id="2i" from="2" to="0" numLanes="3"> > > <split pos="0" lanes="0 1"/> > > <split pos="70" lanes="0 1 2"/> > > </edge> > > > > <edge id="2o" from="0" to="2" numLanes="3"> > > <!--lane index="0" width="1"/--> > > <!--lane index="1" width="1"/--> > > <!--lane index="2" width="1"/--> > > <split pos="0" lanes="0 1"/> > > <split pos="70" lanes="0 1 2" /> > > </edge> > > > > <edge id="3i" from="3" to="0" numLanes="2" > > > <neigh lane="3i_1"/> > > </edge> > > > > <edge id="3o" from="0" to="3" numLanes="2" > > > <neigh lane="3o_1"/> > > </edge> > > > > <edge id="4i" from="4" to="0" numLanes="3" /> > > <edge id="4o" from="0" to="4" numLanes="2" /> > > > > <edge id="a" from="X" to="Y" numLanes="2"> > > <neigh lane="b_0"/> > > </edge> > > > > <edge id="b" from="Y" to="X"> > > <neigh lane="a_1"/> > > </edge> > > > > </edges> > > > > > > > > ------------------------------ > From: nam...@go... > Date: Tue, 21 Jun 2016 08:32:35 +0200 > Subject: Re: [sumo-devel] NBEdgeCont::splitAt(), split on left to model > left turn pocket > To: ze...@li... > CC: sum...@li... > > > Hello, > left turn pockets should be added by defining splits in an added xml file: > http://sumo.dlr.de/wiki/Networks/Building_Networks_from_own_XML-descriptions#Road_Segment_Refining > Or you could just add them with Netedit: > http://sumo.dlr.de/wiki/NETEDIT#Edge_and_Lane > > If you need to send screenshots, make them smaller or send them directly > to me. > regards, > Jakob > > 2016-06-20 18:33 GMT+02:00 Yifeng Zeng <ze...@li...>: > > Hello All, > I was trying to model the left turn pocket. And I use > NBEdgeCont::splitAt() function to split an edge near the > junction/intersection: > > myTestEdgeCont.splitAt(dc, MyTestEdge, > distance_to_split_from_usn, n3, "e_first_"+std::to_string(edge_id), > "e_second_"+std::to_string(edge_id), 3, 4, -1, 1); > > I specified 1 lane that is added on the left side of the edge (changedLeft > = 1), but as shown in the "LeftTurnPocket.PNG" picture, the lane added is > still on the right side of the edge. > > Am I doing anything wrong? Would you please let me know how I can get the > left turn pocket as shown in the "LeftTurnPocketDesired.PNG" picture? > > Thanks, > > Yifeng > > > ------------------------------------------------------------------------------ > What NetFlow Analyzer can do for you? Monitors network bandwidth and > traffic > patterns at an interface-level. Reveals which users, apps, and protocols > are > consuming the most bandwidth. Provides multi-vendor support for NetFlow, > J-Flow, sFlow and other flows. Make informed decisions using capacity > planning > reports. http://sdm.link/zohomanageengine > _______________________________________________ > sumo-devel mailing list > sum...@li... > https://lists.sourceforge.net/lists/listinfo/sumo-devel > > > |
