hi,I am trying to generate a vector with zeros and then replacing 20%,30%,40% of the bits with 40.IS it possible?

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nafila aytija 2016-7-11

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https://ww2.mathworks.cn/matlabcentral/answers/294958-hi-i-am-trying-to-generate-a-vector-with-zeros-and-then-replacing-20-30-40-of-the-bits-with-40-is

评论： Walter Roberson 2016-7-12

采纳的回答： Walter Roberson

在 MATLAB Online 中打开

the code vector is v=[0 0 0 0 0 0 0 0 0 0 0 0];

I am trying to generate

                        v=[0 0 40 0 0 0 40 0 0 0 0]; %%these 40 is random
                        v=[0 40 0 40 0 0 40 0 0 0];
                        v=[ 40 0 40 0 0 0 40 0 40 0]

Any kind of suggestion would be appreciated. TIA

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Answer 1

Walter Roberson 2016-7-11

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https://ww2.mathworks.cn/matlabcentral/answers/294958-hi-i-am-trying-to-generate-a-vector-with-zeros-and-then-replacing-20-30-40-of-the-bits-with-40-is#answer_228356

在 MATLAB Online 中打开

fill_with = 40;
fillpercent = 30;
fill_length = 12;
fill_mask = rand(1, fill_length) * 100 <= fillpercent;
v = zero(1, fill_length);
v(fill_mask) = fill_with;

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nafila aytija 2016-7-12

thanks a lot for your answer.It works completely fine.But I am trying to do it for a serious of percentage (eg: 30% ,40%,50%) and I do not know how to do it...

Walter Roberson 2016-7-12

在 MATLAB Online 中打开

fillpercents = [30 40 50];
num_percents = length(fillpercents);
v = zeros(num_percents, fill_length);
for K = 1 : num_percents
  fill_mask = rand(1, fill_length) * 100 <= fillpercent;
  v(K, fill_mask) = fill_with;
end