"index exceeds matrix dimensions" error

What can I change on the quickersim routine (see attached importMeshGmsh.m) so that I can import a gmsh file (see attached reactor2.gmsh file) into matlab.
When I try, I get the "index exceeds matrix dimensions" error.
The error is in importMeshGmsh (line 114) p(1:3,i) = [abcd(2:4)]';
Regards

7 Comments

At line 6....you have: 1 43 ''1''...but code is expecting four numbers from this line.....where as the file has only two...so the error....
Thanks a lot. The error is cleared.
The file does not appear to be attached?
Same, would you be able to maybe paste in the code or reattach. I am having the exact same issue. Thanks in advance.
basically no need to change the root code, just in the gmesh program ,always try to name the surfaces first then the lines. just be sure to check it by ctrl+shift+v (all the things named will be present there).
after naming & generating the mesh, export it and open it in wordpad. and just delete the anything followed in between the $physicalnames and $EndPhysicalNames
_$PhysicalNames
4
1 3 "My second line"
1 5 "My third line "
2 6 "My surface"
3 1 "The volume"
$EndPhysicalNames_
save the file and then run it on matlab.... although its a bit cumbersome but it works for me.... :)
I also got this error message and found by deleting the text between $physicalnames and $EndPhysicalNames, this error message goes away. However, I then encountered a NEW error as follows:
Error using ==
Matrix dimensions must agree.
Error in importMeshGmsh (line 202)
if(sum(t([1 2],el)'==[n1 n2])~=2 && sum(t([2 3],el)'==[n1 n2])~=2 && sum(t([3
1],el)'==[n1 n2])~=2)
Error in ID_Pen (line 7)
[p,e,t] = importMeshGmsh('taper_1.msh');
One thing I noticed is that in the tutorial files, the number of elements is precisely double the number of nodes, whereas in my own msh file, they are the same...!
Can anyone help me fix this ?
As the original importMeshGmsh is no longer attached, this question would appear to relate to the Gmsh toolbox, http://gmsh.info/doc/texinfo/gmsh.html . However, we would probably need to know which version of the code you are using, and an example file would help.

Sign in to comment.

Answers (0)

Asked:

on 7 Aug 2017

Commented:

on 26 Mar 2018

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!