Error while visualizing a mesh

[Ava-22-neper]

Hi Dear Prof.

I created a simple 2D tessellation and meshed it. The mesh continues to 72%, then switches to 2nd order and the meshing module finishes without error. But when I wan to see the mesh, I get an error "Failed to read msh file.".

I look through similar issues here and found recommendations for updating neper. But I am using V 4.10.2-11 which is new.

I have attached my tessellation and the meshing/visualization process. I would be grateful if you can kindly provide me with guidelines to solve this.

Best regards

[rquey]

Please provide a full bug report, including the files (tess and msh).

[Ava-22-neper]

Thank you very much. These are the commands and files. Just to become able to attach files, I add .txt extension after .tess and .msh.

neper -T -n 186 -dim 2 -domain "square(0.3,0.3)" -reg 1 -morphooptiini "weight:file(weights1.txt)" -morpho "sphericity:file(sphericity1.txt) " -group "diameq<=0.025?1:2" -morphooptistop itermax=10000 -statcell "id" -o trial2

neper -V trial2.tess -print trial2

neper -M trial2.tess -cl 0.005 -elttype tri

neper -V trial2.tess,trial2.msh -print trial_mesh

trial2.msh.txt
trial2.tess.txt
sphericity1.txt
weights1.txt

[Ava-22-neper]

I think I found the reason for the error. @rquey can you please let me know what you think of this?

In this command I just used weights and let Neper to decide on the coordinates and diameters. I saw the stcell file and found that regardless of entering 186 as the number of grains, a large number of them has the id=0. I think this is why meshing does not proceed to 100% and this causes errors while I want to visualize that. To test this, I extracted the ids, coordinates, weights and diameters of the created tessellation, manually removed everything regarding the cells with id=0 and run the commands again. Unfortunately the resulting tessellation was not the same but the meshing completed to 100% and the visualization command also worked without error.