error : Index exceeds matrix dimensions in Computer Vision for training set Face Recognition

I want to make face recognition code. I want to train my dataset. My dataset is image. In order to understand you about my hierarchical directory, i'll explain you about my hierarchical directory. here it is: > ...\SEMESTER 7\VISI KOMPUTER\TUGAS\FP\TRAINING\Training\1(it is until 23)\filename.bmp

I have made a looping for each folder in my code, unfortunatelly i get this error: 'Index exceeds matrix dimensions'. It is my code:

      function FP_FaceRecognition

      directory = uigetdir;
      imageVolum = [];

      for i = 1:23
      imageVolume = [];
      directoryFinal = cell(23,1);
      garing = '\';
      extension = '.txt';
      strI = num2str(i);
      directoryFinal{i} = strcat(directory,garing,strI,garing);
      fileList = dir(directoryFinal{i});
      for idx = 3:numel(fileList)
        tempImage = imread(fullfile(directoryFinal{i}, fileList(idx).name));
        imageVolum(:,:,:,idx) = tempImage;
      end
      for j = 3:33
        strJ = num2str(j);
        garis = '_';
        fileNameFinal = cell(30,1);
        fileNameFinal{j} = strcat(strI,garis,strJ,extension);

        imgManipulation3 = SLGS(imageVolum(:,:,:,j));
        histSLGS = hist(imgManipulation3);
        [rowhist, columnhist] = size(histSLGS);
        for i = 1:rowhist
            for j = 1:columnhist
                fid = fopen(fileNameFinal{i}, 'w');
                fprintf(fid, '%f, ', histSLGS(i,j));
            end
            fprintf('\n');
        end
        fclose(fid);
      end
     end

Your help is meaningful.. :) Thanks..

[Geoff Hayes]

Petrus - which line of code is generating the error? The message is telling you that the code is trying to access an element in the matrix using an index that exceeds the matrix dimension. For example, if we create a 4x4 matrix as

 A = magic(4);

then trying to access an element in the fifth row will generate an identical error message

 A(5,1)

 Index exceeds matrix dimensions.