MATLAB: Delete rows in a matrix to the largest power of 2.

Question

For example if i have a 10×2 matrix, since 10 is not a power of 2 i want to delete rows to make it a 8×2 matrix, where 8 is the largest power of 2.

Answer 1

One approach:

M = randn(10,2);                                        % Create Matrix
if rem(log2(size(M,1)),1) ~= 0
    rowlim = 2^(nextpow2(size(M,1))-1);                 % Calculate Row Limit
    M = M(1:rowlim,:);                                  % Limited Matrix
end

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