Find and remove a value from an array

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Hello! I'm trying to find in an array 'done' the position of a value 'next' without the use of a loop. Then, in this array i want to remove from that position found, the existing element.
out=find(done==next);
done(out)=[];
I tried it this way but is doesnt seem to work. Would you find an arror or recommend another way?

Accepted Answer

Robert U
Robert U on 13 Jan 2020
Edited: Robert U on 13 Jan 2020
Hi Zenia Askar,
Assuming the content of your variables 'done' and 'next' are numeric your code cannot remove a single value from the matrix without destroying the matrix structure. You should apply logical indexing rather than using 'find()'.
done(done == next) = [];
The result does not represent the matrix structure anymore but is a vector then. To omit that you can place a NaN-value instead.
done(done == next) = NaN;
Kind regards,
Robert
  1 Comment
Zenia Askar
Zenia Askar on 14 Jan 2020
Robert, that was really helpfull thank you

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