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

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Paulina Maldonado
Paulina Maldonado 2018-6-22
回答： Walter Roberson 2018-6-22
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));
  1 个评论
Walter Roberson
Walter Roberson 2018-6-22
We do not know what size() of your palette* variables is.
What class is your image array when you start?

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回答（1 个）

Walter Roberson
Walter Roberson 2018-6-22
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.

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