How to combine array columns to form complex number?

28 views (last 30 days)
I'm trying to combine two columns from two arrays to form a complex number. I know I can create a complex number using the complex(a,b) function and I think I am correct in addressing each column in the two arrays as S21real(:,2) and S21imag(:,2). As a results my code looks like
S21complex = complex(S21real(:,2), S21imag(:,2));
Where my data looks like
S21real:
690000000 0.00854245859320000 0
690193750 0.00915901995335000 0
690387500 0.00963277694145000 0
S21imag:
690000000 0.00854245859320000 0
690193750 0.00915901995335000 0
690387500 0.00963277694145000 0
However, when I run the code, I get the following error:
Error using complex
Real input A must be numeric, real, and full.
Can anyone shed some light as to where I am going wrong?
  3 Comments
Ted Baker
Ted Baker on 18 Dec 2019
I'm in 2019b too. :/ Here is my full code. I've attached the two full data files.
I am 99% sure I am working in the correct directory, etc.
% Parameters
filenamei = 'S21_I_BOOT_DRIVER_DIRECT.CSV';
filenamer = 'S21_R_BOOT_DRIVER_DIRECT.CSV';
S21imag = readtable(filenamei, 'HeaderLines', 3);
S21real = readtable(filenamer, 'HeaderLines', 3);
S21complex = complex(S21real(:,2), S21imag(:,2));
Stephen23
Stephen23 on 18 Dec 2019
You use parentheses to access the two S21xxx tables, which the MATLAB documentation
makes clear, returns a table. But complex is not defined for table inputs.
To get the contents of that table (e.g. a numeric array) you need to use the correct indexing: curly braces {} or dot notation with the specific variable names.

Sign in to comment.

Accepted Answer

Fangjun Jiang
Fangjun Jiang on 18 Dec 2019
Since you used table, you need to run
S21complex = complex(S21real.Var2, S21imag.Var2)

More Answers (0)

Categories

Find more on Matrices and Arrays in Help Center and File Exchange

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!