index exceeds matrix dimension problem

I got 'index exceeds matrix dimension problem' while trying to convert test and training face datasets to image and labels when i run the code below. The structure of the datasets and vaiable is at the end of this code. please help. the error line is Bold(*).thank you.

    % open test tst_data - testing data

    f = fopen('tst_data.mat', 'r');
    [aa,count] = fread(f,4,'int32');

    g = fopen('tst_data.mat','r');
    [ll,count] = fread(g,2,'int32');

    fprintf(1,'Starting to convert Test FACE images (prints 13 dots) \n');
    n = 38;

    Df = cell(1,13);
    for d= 0:12,
        Df{d + 1} = dir(['images_tst' num2str(d) '.ascii']);
    end;

    for i=1:13,
        fprintf('.');
        rawimages = fread(f,32*32*n,'uchar');
        rawlabels = fread(g,n,'uchar');
        rawimages = reshape(rawimages,32*32,n);

        for j=1:n,
            *fprintf(Df{rawlabels(j+1)},'%3d ',rawimages(:,j));* % <<<<<<<<
            fprintf(Df{rawlabels(j+1)},'\n');
        end;
    end;
    fprintf(1,'\n');

    for d=0: 12,
        fclose(Df{d+1});
        D = load(['images_tst' int2str(d) '.ascii'],'-ascii');
        fprintf('%5d imagess of class %d\n',size(D,1),d);
        save(['images_tst' int2str(d) '.mat'],'D','-mat');
    end;

    %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
    % open train trg_data - training data

    f = fopen('trg_data.mat', 'r');
    [a,count] = fread(f,4,'int32');

    g = fopen('trg_data.mat','r');
    [l,count] = fread(g,2,'int32');

    fprintf(1,'Starting to convert Test FACE images (prints 52 dots) \n');
    n = 38;

    Df_trg = cell(1,52);
    for d= 0:51,
        Df_trg{d + 1} = dir(['images_trg' num2str(d) '.ascii']);
    end;

    for i=1:52,
        fprintf('.');
        rawimages_trg = fread(f,32*32*n,'uchar');
        rawlabels_trg = fread(g,n,'uchar');
        rawimages_trg = reshape(rawimages_trg,32*32,n);

        for j=1:n,
            *fprintf(Df_trg{rawlabels_trg(j)+1},'%3d ',rawimages_trg(:,j));*%%%
            fprintf(Df_trg{rawlabels_trg(j)+1},'\n');
        end;
    end;
    fprintf(1,'\n');

    for d=0:51,
        fclose(Df_trg{d+1});
        D = load(['images_trg' num2str(d) '.ascii'],'-ascii');
        fprintf('%5d images of class %d\n',size(D,1),d);
        save(['images_trg' num2str(d) '.mat'],'D','-mat');
    end;

 --------------------------------------------------------------------

      Name                Size                 Bytes  Class     Attributes

      Df                  1x13                  4940  cell                
      I_trg              32x32                  1024  uint8               
      I_tst              32x32                  1024  uint8               
      Id_tst           1024x1                   8192  double              
      aa                  4x1                     32  double              
      count               1x1                      8  double              
      d                   1x1                      8  double              
      f                   1x1                      8  double              
      files_img        1976x1                 800712  struct              
      files_img_t       494x1                 200346  struct              
      g                   1x1                      8  double              
      i                   1x1                      8  double              
      i_trg               1x1                      8  double              
      j                   1x1                      8  double              
      ll                  2x1                     16  double              
      m                   1x1                      8  double              
      n                   1x1                      8  double              
      np_img              1x1                      8  double              
      np_img_t            1x1                      8  double              
      pt_images           1x9                     18  char                
      rawimages        1024x38                311296  double              
      rawlabels          38x1                    304  double              
      trg_data         1024x1976            16187392  double              
      tst_data         1024x494              4046848  double              
      x_img               1x1                      8  double              
      x_img_t             1x1                      8  double              
      y_img               1x1                      8  double              
      y_img_t             1x1

[per isakson]

Not easy to say without running the code. Df_trg is not in the list. Anyhow, here are some links on debugging in Matlab

• Debugging in MATLAB
• Debugging session
• Debugging Approaches