How to save results into csv file

Hello everyone, I have a csv file (9X15). At the 15th column, I have times and I converted them in seconds. How can I add/save these results (from the command window)into a new column (16th) at the same csv file.? Thank you very much

Answer 1

[Image Analyst]

Stitch the column onto the right side, and then call csvwrite():

m16Cols = [m15Cols, column16]; % Stitch column16 onto existing 15 column matrix.
csvwrite(filename, m16Cols);

[Nivodi]

Thank you very much for your answer but it didn't work. For the command

m16Cols = [m15Cols, column16] it shows up: "Error using test2 (line 20) All input arguments must be tables."

[Image Analyst]

You didn't say they were tables before. Try using join() or outerjoin(), but it should work as is. Then use writetable() instead of csvwrite().

What are the data types of m15Cols and column16? They should both be tables. Evidently one of them is NOT a table - it's probably a regular double vector or something. Here is a demo:

load patients % Load built-in demo data.
T4 = table(Age,Height,Weight,Systolic, ...
  'RowNames',LastName)
T1 = table(Diastolic)
Tboth = [T4, T1]
writetable(Tboth, filename);

[Nivodi]

Thank you very much for your help!