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How can I count the number of times a specific value appears within a range in a 1D vector?

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Caesar Hernandez
Caesar Hernandez on 27 Apr 2020
Commented: per isakson on 29 Apr 2020
Given a 1D vector, x, that has 600000 elements, how can I count the number of times the value 1 appears after the 150th position (excluding 150)?

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More Answers (2)


per isakson
per isakson on 27 Apr 2020
If x is a vector of whole numbers
sum( double( x(151:end)==1 ) )
else
sum( double( abs(x(151:end)-1) < small_number ) )

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