How to save data from a for loop?

2019 9 2
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更新时间：2019 9 2
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Hello everyone ,
i will need your help. I am running a consequence of files with a for loop, which matlab is reading and making some calculations with their data. What i want to do is to save certain results from the calculations of every file that is running (from every file thas is going through the loop). I need to do that in xlsx or txt file. Thank you in advance!
p.s i managed to succeed in saving the graphics from every file that i plotted:
savefig (h1, sprintf('Experimental_drying_rates_%s.fig ', num2str(i)));
savefig (h2, sprintf('Evaporation_coefficent_beta_%s.fig ', num2str(i)));
savefig (h3, sprintf('Calculated_drying_rates_%s.fig ', num2str(i)));

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Stephen23
Stephen23 2019-9-2
编辑：Stephen23 2019-9-2
Note that rather than using num2str and sprintf like this:
sprintf('Experimental_drying_rates_%s.fig ', num2str(i))
you can use sprintf directly to convert the numeric value:
sprintf('Experimental_drying_rates_%d.fig ', i)
% ^^ numeric format specifier!
https://www.mathworks.com/help/matlab/import_export/process-a-sequence-of-files.html
"I need to do that in xlsx or txt file."
https://www.mathworks.com/help/matlab/standard-file-formats.html
Niya Bedzheva
Niya Bedzheva 2019-9-2
okay, thank you, got it. But still i can't find a way to save the variables i need after reading each file from the loop. I got six files that matlab is reading in order and after finishing calculations of every file i need to save a few variables into txt files (to every file that is read should attach a txt file with results).
Niya Bedzheva
Niya Bedzheva 2019-9-2
i am trying with something like this
for i=1:N
R=table (Time, beta, Sh, K, 'VariableNames' , {'Time', 'beta', 'Sh', 'K'});
writetable(R,'Results_%d.txt',i);
end
but it gives me error: Wrong number of arguments.
Stephen23
Stephen23 2019-9-2
编辑：Stephen23 2019-9-2
writetable is not sprintf. Do not mix them up.
To generate the filename, use sprintf as I showed you:
F = sprintf('Results_%d.txt',i);
Then use that filename in writetable:
writetable(R,F)
Niya Bedzheva
Niya Bedzheva 2019-9-2
Thank you very much, it worked! i just don't know how to accept your answer :/

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Stephen23
Stephen23 2019-9-2

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Where T is your table:
for k = ...
T = your table
F = sprintf('Results_%d.txt',k);
writetable(T,F)
end

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