Change matrix bits depending on the rate (Matlab)

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Afluo Raoual 2021-3-13

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评论： Jan 2021-3-15

采纳的回答： Jan

Dear members;

I have matrix of B*C dimensions.

and I have to write a program that verify if the final bits are '0' or '1'. If final bits are '0', the program change them to '1'.

采纳的回答

Jan 2021-3-13

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https://ww2.mathworks.cn/matlabcentral/answers/771773-change-matrix-bits-depending-on-the-rate-matlab#answer_646943

编辑：Jan 2021-3-13

在 MATLAB Online 中打开

[s1, s2] = size(A);
d  = gcd(s1, s2);
n1 = s1 / d;
n2 = s2 / d;
vCol = n2:n2:s2;
for iCol = 1:numel(vCol)
    iRow = (iCol - 1) * n1 + 1;
    A(iRow:iRow + n1 - 1, vCol(iCol)) = 1;
end

Alternative - more Matlab'ish without loops:

sizeA  = size(A);
n      = sizeA ./ gcd(sizeA(1), sizeA(2));
idx    = sub2ind(sizeA, 1:sizeA(1), repelem(n2:n2:s2, n1));
A(idx) = 1;

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