How do I change the header name of csv files?

Here are the screenshots of my code and the ouput too

[Adam Danz]

One screenshot shows importing variables, the other screenshot shows writing variables to a csv file. Your question is unclear.

Also, what Matlab release are you using (run ver function)?

[dunphy]

n=input('\nHow many values of wavelength and frequency do you have?: ');   
for i=1:n; 
    disp(' ') 
    w(i)=input('Enter the value of your wavelength: ');                    %The w(i) variable represents the values of the wavelength                                        
    disp(' ')
    fr(i)=input('Enter the value of your frequency: ');                    %The fr(i) variable represents the values of the frequency                            
v=@(w,fr)w.*fr;                                                                                                                                                                                             
result=v(w,fr);
 
end

p=w';
d=fr';
e=result';
csvwrite('speed.csv',[p(:),d(:),e(:)])

[dunphy]

That is my full code. When i run it, there will always be a speed.csv file forming however the headings remain "Var1" "Var 2". How do I change it permanently?

[dunphy]

I'm using R2019b

Answer 1

[Adam Danz]

When you write the csv file, there are no headers using the syntax you shared. The Var1 Var2.... headers appear when you read the data back into Matlab.

I suggest you convert your matrix into a table and use writetable() instead of csvwrite.

T = array2table([p(:),d(:),e(:)], 'VariableNames', {'p','d','e'})
%  Replace these with meaningful variable names    ^^^^^^^^^^^^^

writetable(T, 'speed.csv')

[dunphy]

It worked, ty so much!

[Adam Danz]

Glad I could help!