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Hello,

Matisse keeps crashing when I try to build my mesh (freezes with message ‘matisse.exe has stopped working’).

I think this is because I have too many bathymetry points. It loads the bathymetry data ok in bathymetry mode, but then crashes in mesh mode when I press ‘compute mesh’.

This was discussed in the thread ‘Plantage de Matisse’ so I tried reducing the number of points I use. But I have to reduce the number down to about 70,000 points before it will create a mesh. Is this normal? Is there a set maximum number of points matisse can use?

The other suggestion was using Blue Kenue which I understand copes better with greater numbers of points, but I’m not sure how to generate boundary conditions files if I use that?

Any advice much appreciated,
R Moore

Hi
I think your problem doesn't come from the number of bathymetry points but probably from your criterion that generate a computation problem when matisse try to compute the mesh.

You should first check when the problem arrive:
- After compute the mesh, does matisse ask you to choose the criterion?
- Does matisse gives you an estimation of the number of points?

If the crash arrives after this step, you could try with another criterion (lower than the first one).
You probably had a problem on ont boundary or maybe twin points.
Check the esmedatavertices in bin/temp directory

Regards

Hi,

Thanks for your response.
It does ask me to choose a criterion..... but there is no estimation of the number of points/nodes in the mesh - it crashes before this step.

I tried significantly reducing the criterion (reducing the resolution of the mesh) but this didn't seem to help.

Also I can't find anything about esmedatavertices in the bin/temp folder.

Regards,

R Moore

Hi
When matisse crash, the files in bin/temp are deleted. So you should try to make a copy of the file just before the crash ... (not easy)
You could also have look on the command windows where matisse wrote some informations during the computation.
And least, maybe you could join your matisse project (directory .MAT) zipped in this topic. It allow us to try to reproduce your problem and find a solution

Regards

Hello,

I also have the same problem: Matisse keeps crashing when I try to build my mesh. When I select the option Compute Mesh in the Actions menu, it asks me to choose a criterion but there is no estimation of number of points/nodes in the mesh - it crashes before this step. I have attached my matisse project, looking forward to a solution.

Does anyone have any ideas what the problem might be?

thank you

Hi,

Sorry to keep insisting on the some problem, but I still can`t build my mesh. I have a XYZ file with about 600 000 points (is it too much?). In Matisse I build the contour line around the points, then after creating a criteria in the mesh mode I start to generate my mesh. At this point it crashes, without showing the number of points. The information that appears in the DOS window is the number of points followed by a crash of the system after the phrase: "Preparation 1D". On the other hand, when I work with apart of the project (small area) it is possible to creat a mesh.

Thanks in advance

Hello,

I have the same problem. I cannot generate mesh by selecting Compute Mesh. I tried different criterions, from 50m to 5000m. The Matisse keeps crashing before the computation. Attached is the .MAT file. Could you help me to investigate this problem? Thank you very much！

Hi
I just had a short look into your matisse project.
The number of bathymetric points is huge and maybe that could generate some crash in matisse.
I note that the outline is very refined so maybe your criterion is too big for such refinement and that could generate some crossing in the triangulation and then a crash.

I made a test with a delete of all the bathymetry point just using the geometrical line and a constant criterion of 100m and the matisse is able to generate a mesh of about 365000 nodes.
With such mesh it's easy to use Fudaa or Blue Kenue to mapp the bathymetry points on this mesh...

You could also use blue kenu to generate the mesh entirely. It just require the outline and the island for the mesh computation. The bathymeric mapping should be made in a second step.

Hope this helps

Thanks a lot! It's a good idea to combine Matisse and BlueKenue. I'll do it like you said.