calculating max value of each interval in a data and apply loop for each interval.

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sud 2018-5-14

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编辑： Aditya Salveru 2018-5-15

hello. i have a column of 18200 values. i want to divide it into interval of 10 elements each. and then calculate the max value of each interval. but, when i want to calculate the max value of 2nd interval, i want to consider all values from the previous interval. and then calculate the max value of 1st 20 elements.i want to do the same to the rest of the intervals. please help me how can i apply such a loop? thank u.

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Answer 1

Aditya Salveru 2018-5-14

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编辑：Aditya Salveru 2018-5-15

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Hi sud,

You can do this by by finding the max of 1-10,1-20,1-30....elements. The code for the same is as follows:

k=randi(500,18200,1);
n=1:10:length(k); % n becomes [1,10,20,...18200]
maximum=[];
for i=1:length(n)
    maximum(i)=max(k(1:n(i))); % i'th element of maximum would be the max upto i'th interval of k.
end
maximum