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

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

Answer 1

[Walter Roberson]

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;

[nafila aytija]

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]

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