index out of bounds

Hi I'm trying to execute a program but I keep getting this error:

"Attempted to access indx(1); index out of bounds because numel(indx)=0" I understand what it means, but I'm not able to fixe it, I need some help.

The main function is GAmodule and you can insert these numbers :

235
2
2
4
0
0
0
10
0
0
5
0
10
5
5
10
g
500

I got stuck in this error for 1 month and I will be very appreciate any help.

Answer 1

[Ahmet Cecen]

I don't have the Global Optimization Toolbox, but I went through your code and my first impression is that your problem could be here:

in FEM2.m line 45

 [Ex,Ey,Ez]=coordxtr(Edof,Coord,Dof,3);

reading through your documentation for coordxtr:

 nen:   number of element nodes

doesn't seem to me like you intend that number to be 3 for the above configuration.

Regardless, your code is most likely breaking here (at coordxtr):

       for j = 1:nen
          check=Dof(:,1:nend)-ones(n,1)*Edof(i,(j-1)*nend+2:j*nend+1);
          [indx,dum]=find(check==0);
          nodnum(j)=indx(1);
       end

So focus your attention on that.

[Hessam]

I attached some pic, It may help why I'm getting this error

Please look at these pics and give me some help, I can NOT solve this alone

[Ahmet Cecen]

Did you confirm that your code indeed breaks there?

[Hessam]

sure

[Ahmet Cecen]

What you sent as a picture is just 1 instance of "check". It must be a different value of "j" that breaks the loop. Put the red dot where it was in the pictures, then manually keep running it, then look at the value of check at the iteration (j) just before the operation breaks.

[Pierre Benoit]

You could also type this :

dbstop if error

in the command windows before you run the code so you don't have to go through the loop manually.

[Hessam]

Ahmet, I did what you said, for the first manual running this comes out (check2) but for the second time I got error.

Thanks my friend

[Hessam]

Dear Ahmet, I tried the code with variable j.

Please help me out and look these pics

[Ahmet Cecen]

This means you are probably making a mistake in your FEM2 code in the way you are using the coordxtr function or any of the variables you feed there. As in it is a conceptual error, not a straightforward coding error. I cannot help you there, since I don't actually know anything about FEM or the side functions you are using.