> On 6 Sep 2018, at 15:04, Alessandro Vicini <[email protected]> > wrote: > > > In version v2 of the mesh file, surface elements are directly associated to > the physical ID of the surface they belong to (which is useful). > If I get it right, in version v4 this direct association is missing: the > surface elements are associated with the elementary ID of the surface, and > the correspondence between elementary and physical surfaces is to be found in > the Entities list.
Exact. > My question is: is it possible with version v4 to still have the direct > association surface element -> physical surface? Thank you. As you mentioned, you have it through the "Entity" definitions. The handling of physical groups in version 2 had numerous issues (see https://gitlab.onelab.info/gmsh/gmsh/issues/94). Two of the most serious were that - if you defined more than 1 group for a given geometrical entity, the elements would be duplicated - storing the physical group for each element was wasteful (as many integers as elements, instead of a single one) Christophe PS: note that if you liked the version 2 format, you can continue to use it (just set Mesh.MshFileVersion=2.2; in your geo file or in your default options) - we will continue to support it. (We still support Version 1...) > Alessandro > > _______________________________________________ > gmsh mailing list > [email protected] > http://onelab.info/mailman/listinfo/gmsh — Prof. Christophe Geuzaine University of Liege, Electrical Engineering and Computer Science http://www.montefiore.ulg.ac.be/~geuzaine Free software: http://gmsh.info | http://getdp.info | http://onelab.info _______________________________________________ gmsh mailing list [email protected] http://onelab.info/mailman/listinfo/gmsh
