SUMO currently does not interpolate the elevations. I understand the problem and there is now a ticket for that (see http://sumo.dlr.de/trac.wsgi/ticket/1962)
regards, Jakob 2015-10-11 22:57 GMT+02:00 Matej KUBICKA <[email protected]>: > Ok, so if my understanding is correct I can enforce segmentation of lanes > at different elevation with --geometry.max-segment-length. With my > elevation model having resolution 25x25 meters I can set this segmentation > to, say, 12 meters, which will enforce that no elevation samples get > skipped. > > Does SUMO interpolate the elevations, or not? If not, then the elevation > profiles will contain artifacts which will have ugly effects on our > simulations. > > For example, imagine that we set the segmentation per one meter. If you > do not interpolate the data, then there will be mostly flat edges with a > number of steep steps in elevation (effect, easily so steep that the car > would essentially crashed in them :-)). > > ~Matej. > > PS: I will try to find a time to take a look at the GeoTIFF issue. > > > > > Le 2015-10-11 21:37, Jakob Erdmann a écrit : > > Hello, elevation data may be added to all lane geometries. The netconvert >> option >> --geometry.max-segment-length can be used to control the spatial >> resolution (without the need to add any junctions). We haven't done a lot >> of testing with geotiff heightmaps. If you can provide a failing sample we >> may be able to track down the error. Please try to find the smallest sample >> possible. >> >> regards, Jakob >> >> 2015-10-11 16:36 GMT+02:00 Matej KUBICKA <[email protected]>: >> >> Hello, >>> are elevation profiles incorporated in the shape of the lanes? - or, is >>> it only junctions that have assigned elevation? >>> >>> I tried to add GeoTIFF height map to the Luxembourg scenario using "$ >>> netconvert --sumo-net-file LuSTScenario.net.xml --heightmap.geotiff >>> EUD_CP-DEMS_2500045000-AA.tif -o LuSTScenario.2.net.xml", hoping that >>> diff would provide some clues. >>> >>> Its output: >>> _Error: Unknown data type in EUD_CP-DEMS_2500045000-AA.tif._ >>> _Warning: In lane '--32572_0': Could not build shape._ >>> _Warning: In lane '-32572_0': Could not build shape._ >>> _Quitting (on error)._ >>> >>> The error is pretty generic and the altitude data come from official >>> source, so they should be fine. Can SUMO read the projection of the >>> data? The dataset uses epsg::3035, Lamberth Azimuthal Equal Area >>> projection. >>> >>> Thank you, >>> ~Matej. >>> >>> -- >>> >>> Matej KUBICKA >>> >>> Phone: +33 1 69 85 17 81 [1] >>> >>> ------------------------------------------------------------------------------ >>> _______________________________________________ >>> sumo-user mailing list >>> [email protected] >>> https://lists.sourceforge.net/lists/listinfo/sumo-user [2] >>> >> > > Links: > ------ > [1] tel:%2B33%201%2069%2085%2017%2081 > [2] https://lists.sourceforge.net/lists/listinfo/sumo-user > ------------------------------------------------------------------------------ _______________________________________________ sumo-user mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/sumo-user
