MATLAB Answers


How can I separate complex numbers from the other in a matrix?

Asked by masoud jiryaei on 10 May 2019
Latest activity Commented on by the cyclist
on 18 Jun 2019
I have a matrix that includes: complex numbers , natural numbers and ...
I want to separate the complex numbers from the other
How can I do this ?
Is there any order in MATLAB ?


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1 Answer

Answer by the cyclist
on 10 May 2019
Edited by the cyclist
on 10 May 2019
 Accepted Answer

% Example data
z = [1 1+2*i 3 4+5*i]
mask = imag(z)==0;
The variable mask is a logical variable that is TRUE at the locations of the numbers that do not have an imaginary component, and FALSE otherwise.
You'll need to be careful if you have imaginary parts that are within floating-point precision of zero. You might need to use a tolerance, rather than strict equality.


realElements = z(mask);
imagElements = z(~mask);
How can i send a three-dimensional matrix to the Excel?
Rather than ask in three different places (two questions, and this comment) within one hour, I suggest you be a little patient and see what answers you get on one question. You already have some suggestions in your questions here and here.

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