How to code below mathematical formula?

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Hassan Ashraf
Hassan Ashraf on 3 Jul 2019
Edited: KALYAN ACHARJYA on 3 Jul 2019
I want to implement a below mathematical function in MATLAB, can anyone help me out?
myop.png

Accepted Answer

Stephen
Stephen on 3 Jul 2019
Edited: Stephen on 3 Jul 2019
The simple MATLAB solution:
>> x = 1:30;
>> t = 23; % threshold
>> MYOP = sum(x>=t)/numel(x)
MYOP =
0.26667

More Answers (1)

KALYAN ACHARJYA
KALYAN ACHARJYA on 3 Jul 2019
Edited: KALYAN ACHARJYA on 3 Jul 2019
x= %define x value range
n= %define n
threshold= %define threshold value
fx=x;
idx1=find(fx>=threshold);
fx(idx)=1;
idx1=find(fx<threshold);
fx(idx)=0;
MYOP=(sum(fx(1:n)))/n;
  2 Comments
Stephen
Stephen on 3 Jul 2019
Note that this answer does not implement the formula given in the question.
In particular it does not include f(x) in any way within the sum, as the question indicates. It also does not vectorize the generation of fx (or use a loop), so it is unlikely to be a useful approach anyway.
The code throws an error when run because xi is not defined:
Undefined function 'xi' for input arguments of type 'double'.

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