How to save normalized data set in file for using it again?

I have dataset in csv file. I have normalized it using

Data = rand(10, 20);  % Test data, use your data instead
minData = min(Data(:));
maxData = max(Data(:));
scaled  = (Data - minData) / (maxData - minData);  % Scaled to [0, 1]
scaled  = scaled * 2 - 1;  % Scaled to [-1, 1]

now the data is normalized, i want to save the normalized data in file again like csv, txt etc.

[Jan]

Do you see that the shown code is not relevant for your question? A scaled = rand(2,5) would be sufficient also.

Answer 1

[Walter Roberson]

You could use save() or csvwrite() or dlmwrite() or xlswrite()

I would suggest saving as a binary .mat file unless you need it as text for another program.

[tejasvee]

It gives error while using any of above. Error using save Unable to write file matlab.mat: permission denied. I want to use the normalized data for my another program.I want to use it to train my machine and it require normalized data.

[tejasvee]

Data= csvread('dataset.csv');
Data = rand(10, 20);  % Test data, use your data instead
minData = min(Data(:));
maxData = max(Data(:));
scaled  = (Data - minData) / (maxData - minData);  % Scaled to [0, 1]
scaled  = scaled * 2 - 1;  % Scaled to [-1, 1]
save('dataset.csv')

[Jan]

The error message means, that you do not have write permissions in the current folder or that you try to write to a protected file. Again: the code to create the data is not relevant for the question. Concentrate on the details.

[tejasvee]

It means i can't use normalized data set in matlab which is again saved to file to train my machine.

[Walter Roberson]

save() does not save in csv form.

save dataset.txt scaled -ascii -double   %text format but not commas

or

csvwrite('dataset.csv', scaled)

[tejasvee]

Thanks it was helpful and it worked.