Subscripted assignment dimension mismatch

I got error 'Subscripted assignment dimension mismatch' for the following code:

for i = 1 : 2

       for k = 1: 4
  tmp3_=val(['importdata(''./Output/THOutput/Run',num2str(i),'/GM',num2str(k),'/pileDisp','.out'')']);

              nPileNode = (size(tmp3_, 2)-1) / 3;

          for n=1 : nPileNode
              dispPileNodes_X(: , n)=tmp3_( : , (n-1) * 3 + 2 );  
              dispPileNodes_Y(: , n)=tmp3_( : , (n-1) * 3 + 3 ); 
          end

              Max_dispPileNodes_X =max(abs(dispPileNodes_X),[],2); 
              Max_dispPileNodes_Y =max(abs(dispPileNodes_Y),[],2);

              Max_max_dispPileNodes_X(i,k) = max(abs(Max_dispPileNodes_X)); 
              Max_max_dispPileNodes_Y(i,k) = max(abs(Max_dispPileNodes_Y)); 
       end
   end

Answer 1

[Walter Roberson]

We have no information about what your val() function does.

This code looks suspiciously close to using eval() for no good reason.

thisfile = sprintf('./Output/THOutput/Run%d/GM%d/pileDisp.out', i, k);
tmp3_ = importdata(thisfile);

Note: we have no idea what the size of the input data is, or what size you initialized dispPileNodes_* to. Or which line the error is occurring on.

[Mos_bad]

the error is occurring on the lines :

Max_max_dispPileNodes_X(i,k) = max(abs(Max_dispPileNodes_X)); 
Max_max_dispPileNodes_Y(i,k) = max(abs(Max_dispPileNodes_Y));

[Walter Roberson]

Either dispPileNodes_X is somehow 3D, or nPileNode < 1 and dispPileNodes_X was initialized to empty.

[Mos_bad]

dispPileNodes_X is 2D and nPileNode=88

[Walter Roberson]

Time to use the debugger.

dbstop if error

Run the code. When it errors out, check that i and k are scalars and that Max_dispPileNodes_X is a non-empty vector.