I have a problem with writing data to file

I have some data I would like to write them in csv file but I am getting erros regarding the fprintf as well as I can get the right decimal places that I wrote. [ Please see the code below ].

fid=fopen('mn21hmya2021.csv','wt');
fprintf(fid,'time_q2,reach,x_relative_hand,y_relative_hand,z_relative_hand\n');
fprintf(fid,'%.2f,%.4f,%.4f,%.4f%.4f\n', wanted_columns');
fclose(fid);
headers = {'time_q2','reach','x_relative_hand','y_relative_hand','z_relative_hand'}
write= array2table(wanted_columns, 'VariableNames', headers)
writetable(write,'mn21hmya2021.csv','Delimiter',',') 

The errora are:

1- Invalid file identifier. Use fopen to generate a valid file identifier.

2- fprintf(fid,'time_q2,reach,x_relative_hand,y_relative_hand,z_relative_hand\n');

Answer 1

[Jan]

The folder might be write protected. Check this in general:

[fid, msg] = fopen('mn21hmya2021.csv','wt');
assert(fid > 0, msg);

Prefer absolute path names. It is fragile to rely on the current path to be at an expected location.

[Hassen Mohamed Yousif Abdelatif]

Thanks for replying .

That does not work and it gave me ' Permission denied' .

[Jan]

Fine. This means, that you do not have write permissions in the current folder. What is the current folder? See the output of the cd command.