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Storing first 200 points from 400 points

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Hussam Ibrahim
Hussam Ibrahim 2017-11-13
编辑： James Tursa 2017-11-14
Hello,
I have a 700000x1 double array where I want to store the first 200 points from every 400 points into a new array. How can I do it?
e.g. Store 1 to 200 from 1 to 400 Store 401 to 600 from 401 to 800 Store 801 to 1000 from 801 to 1200 and so on

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James Tursa
James Tursa 2017-11-14
编辑：James Tursa 2017-11-14
X = your vector
temp = reshape(X,400,[]); % Get groups of 400 in columns
result = reshape(temp(1:200,:),1,[]); % Pick off the first 200 rows and reshape

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