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Selecting sequence of data of column vector

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Willemijn Wolf
Willemijn Wolf 2016-8-16
编辑： Stephen23 2016-8-16
I've got a column vector with length 5000, each row containing a binary results (0 or 1). I need to calculate the sum of the 1st, 6st, 11th, 16th, ... but I don't know how to select those 1st, 6st, 11th, ... datapoints. Can someone help me? Thanks!

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Stephen23
Stephen23 2016-8-16
编辑：Stephen23 2016-8-16
Just use indexing:
sum(vector(1:5:end))
This is very basic MATLAB usage, which is taught well in the introductory tutorials:
http://www.mathworks.com/help/matlab/getting-started-with-matlab.html

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