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How to get sum of a range

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Crystal Lee
Crystal Lee on 12 Aug 2018
Commented: Paolo on 12 Aug 2018
I am trying to get the code below to output the number of elements within v(a vector) that are below 2 and above 4.
sum(sum(v<2 & v>4))
When I define v and run this, it does not work as I would like it to. eg for
v=[1,3,5];
sum(sum(v<2 & v>4))
I am expecting an output of 2, since there is 1 element below 2(1), and 1 element above 4(5).

Accepted Answer

Paolo
Paolo on 12 Aug 2018
You want to use the OR operator here and not the AND. Use:
nnz(v<2 | v>4)
  2 Comments
Paolo
Paolo on 12 Aug 2018
That really goes without saying, I am sure OP understands that. He is probably confused about the meaning of logical operators.

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