how to create checkboard using matrix?

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abid rashid
abid rashid 2017-3-15
评论： abid rashid 2017-3-15
I am trying to create checkboard using matrix but not getting success. With Forloop I have developed it but having problem with matrix. How we can create checkboard pattern using matrix to get the result like in attachment.

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回答（2 个）

ES
ES 2017-3-15
white100_100 =repmat(1, 100, 100);%1-white color
black100_100 =repmat(0, 100, 100);%0-black color
chessboardMatrix = repmat([black100_100 white100_100;white100_100, black100_100], 4,4);
imwrite(chessboardMatrix , 'chessboard.jpg')
  2 个评论
abid rashid
abid rashid 2017-3-15
Thank you, how to make this result out of the above coding please. 2 black and 2 white only.
abid rashid
abid rashid 2017-3-15
Got it using this
white100_100 =repmat(1, 128, 128);%1-white color
black100_100 =repmat(0, 128, 128);%0-black color
chessboardMatrix = repmat([black100_100 white100_100;white100_100, black100_100], 1,1);
imshow(chessboardMatrix );

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Jan
Jan 2017-3-15
编辑：Jan 2017-3-15
M = rem(bsxfun(@plus, 1:8, (1:8).'), 2);
Or since Matlab R2016b:
M = rem((1:8) + (1:8).'), 2);
[EDITED] For your 2x2 grid, this would be the best solution:
M = [1,0; 0,1];
But dynamically:
n = 2;
M = rem(bsxfun(@plus, 1:n, (1:n).'), 2);
% Or: M = rem(bsxfun(@plus, 0:n-1, (1:n).'), 2);

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