Using a loop for repeating steps
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I need some help with a loop. i have codes here:
RandomArray= randi([-100 100],20,5); % step 1
RandomArray=sort(RandomArray(:)); % step 2
RandomArray = reshape(RandomArray,5,20).';
y=mean(RandomArray,2); % step 3
[c,index] = min(abs(y-0)); % determines which row is closest to 0
RowNumber= index;
I have to repeat these steps 1000 times then plot RowNumber in a histogram. I know I can use a FOR loop but i'm a bit lost on how to assign the codes. Can someone help? please and thank you.
4 个评论
James Tursa
2017-2-21
Repeat these steps 1000 times and then do what with the results? Save everything into multi-dimensional arrays? Save only the index? Save only the rows associated with the index? Or what?
Anonymous Matrix
2017-2-21
编辑：Anonymous Matrix
2017-2-21
Akira Agata
2017-2-21
Is this what you want to do?
N = 1000;
RowNumber = zeros(N,1);
for kk=1:N
RandomArray= randi([-100 100],20,5); % step 1
RandomArray=sort(RandomArray(:)); % step 2
RandomArray = reshape(RandomArray,5,20).';
y=mean(RandomArray,2); % step 3
[c,index] = min(abs(y-0));
RowNumber(kk) = index;
end
% Plot histogram
histogram(RowNumber);
Anonymous Matrix
2017-2-21
回答（1 个）
Akira Agata
2017-2-21
Just in case, let me copy&paste my comment to the answer section.
N = 1000;
RowNumber = zeros(N,1);
for kk=1:N
RandomArray= randi([-100 100],20,5); % step 1
RandomArray=sort(RandomArray(:)); % step 2
RandomArray = reshape(RandomArray,5,20).';
y=mean(RandomArray,2); % step 3
[c,index] = min(abs(y-0));
RowNumber(kk) = index;
end
% Plot histogram
histogram(RowNumber);
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2017-2-21
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