If you get stuck you can set the material ID manually after importing it
with something like:
Point<dim> p ;
for (const auto &cell : triangulation.active_cell_iterators())
{p=cell->center() ;
if(sqrt(p[0]^2+p[1]^2)<r)
cell->set_material_id(1) ;
else
cell->set_material_id(2) ;
}
It's a cheat and might be a bad idea if your geometry gets complicated
though.
On Thursday, December 22, 2022 at 5:23:35 PM UTC+2 deepika...@iitgoa.ac.in
wrote:
> Thank you for your response.
> I have changed the 2d algorithm from tool -> option-> mesh. Now it is
> showing that the mesh curvilinear is off. Still I am getting the same error
> while reading the gmsh file in dealii. Please find the attached updated
> mesh and the error message.
>
> [image: image.png]
> [image: image.png]
>
> Thanks
> Deepika
>
> On Thu, Dec 22, 2022 at 7:41 PM Bruno Turcksin <bruno.t...@gmail.com>
> wrote:
>
>> Deepika,
>>
>> Can you try using a linear mesh instead of curvilinear one? Does that
>> work?
>>
>> Best,
>>
>> Bruno
>>
>> On Thursday, December 22, 2022 at 1:47:32 AM UTC-5
>> deepika...@iitgoa.ac.in wrote:
>>
>>> Hello Everyone,
>>>
>>> I have successfully read a gmsh file for one material in my code. Now I
>>> am trying to read the gmsh file which has two different materials, but it
>>> is showing the following error (see below). I am not able to understand the
>>> meaning of the error message. Please help.
>>>
>>> [image: image.png]
>>> The gmsh geometry is also attached for reference.
>>> [image: image.png]
>>>
>>> Thanks & Regards,
>>> Deepika
>>>
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