I am trying to read a mesh (.msh file) generated by Gmsh (version 4.7.1),
but getting an error. I am using the following commands:
GridIn<dim> grid_in;
grid_in.attach_triangulation(triangulation);
std::ifstream input_file("ma_mesh3.msh");
grid_in.read_msh(input_file);
The issue is occurring while executing
grid_in.read_msh(input_file)
This is the error message:
Exception on processing:
--------------------------------------------------------
An error occurred in line <1534> of file
</home/krishanu/Google_Drive/dealii/dealii_920/dealii-9.2.0/source/grid/grid_in.cc>
in function
void dealii::GridIn<dim, spacedim>::read_msh(std::istream&) [with int
dim = 2; int spacedim = 2; std::istream = std::basic_istream<char>]
The violated condition was:
n_physicals < 2
Additional information:
More than one tag is not supported!
Am I doing something wrong, or is there any particular version of Gmsh that
should be used to generate meshes that are compatible with deal.ii?
Thanks for any help or advice.
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