"index exceeds array bounds " error. Don't know whats wrong

Having trouble fixing this issue. Please help

for i = 1:1:4800
    % Because in MATLAB/Octave indexing starts from 1

if image(i) < 255
      image(i) = image(i) + 1;
    end

      alphaLSH = uint32(bitshift(255, 24));
      redLSH = uint32(bitshift(paletteR(image(i)), 16));
      greenLSH = uint32(bitshift(paletteG(image(i)), 8));
      blueLSH = uint32(bitshift(paletteB(image(i)), 0));

      image(i) = typecast(bitor(bitor(alphaLSH, redLSH), bitor(greenLSH, blueLSH)), ...
                          'int32');
    end

Command window shows:

Index exceeds array bounds.

Error in matlab_example_create_image3  (line 116)        
         redLSH = uint32(bitshift(paletteR(image(i)), 16));

[Walter Roberson]

We do not know what size() of your palette* variables is.

What class is your image array when you start?

Answer 1

[Walter Roberson]

It looks to me as if you are re-arranging bytes. You should look at using byteswap(). Or you should typecast() to uint8, reshape to 4 x N, use indexing to re-arrange the rows, then typecast() back to uint32.