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Error while using writematrix to save complex values in a .txt

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Ragini Bakshi
Ragini Bakshi on 4 Dec 2019
Edited: Jeremy on 26 May 2021
Hello, I have a very basic script that reads in around 15000 complex values from a .csv file, does some basic data manipulation and saves it into a .txt file using writematrix. However, it seems the values with a negative imaginary component (i.e. in the form of a-bi) are being saved into the .txt as a+-bi. Calling a readmatrix on this file saves these values as NaN and I cannot proceed. Any ideas? A segment of the code follows along with the exported file values.
%% 1. .csv file to table to array
%% 2-4: Modify values by basic division, rss, etc
%% 5. Export data
writematrix(signal_d_prime, 'signal_modified.txt', 'Delimiter', ' ')
%% Check
readmatrix('signal_modified.txt')
signal mod.JPG

Accepted Answer

Jeremy
Jeremy on 4 Dec 2019
Edited: Jeremy on 4 Dec 2019
csvwrite
Does this correctly. I will look into writematrix
  3 Comments
Jeremy
Jeremy on 26 May 2021
What version of MATLAB are you using? The issue with writematrix described in this post was fixed in R2020b. If you are using an older version I would recommend updating. If you are using a recent version and still running into an issue I would recommend making a separate question post.

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