MATLAB: Easy question but I don’t know the solution.

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Hi folks
Sorry for this easy question, but I really can't find it. I have an EditField in my app designer app. the text in there needs to be saved under DataName as an .mat file. So if there is 'Barcelona' in the EditField, DataName must be 'Barcelona.mat'. How can I do this?
Thanks already!

Best Answer

Sorry, I don't know App Designer yet so I'll answer for GUIDE:
% Get the filename from the edit field
editFieldContents = handles.edit1.String;
% Create base file name
baseFileName = sprintf('%s.mat', strtrim(editFieldContents ));
% Create full file name
folder = 'D:\DataName';  % Wherever you want.
fullFileName = fullfile(folder, baseFileName);
% Now save
save(fullFileName, 'var1', 'secondVar', 'thirdVariable');
Of you could use uiputfile():
% Get the name of the file that the user wants to save.
startingFolder = 'D:\DataName';  % Or "pwd" or wherever you want.
defaultFileName = fullfile(startingFolder, '*.mat');
[baseFileName, folder] = uiputfile(defaultFileName, 'Specify a file');
if baseFileName == 0
  % User clicked the Cancel button.
  return;
end
% Make sure the extension is .mat
[~, baseFileNameNoExt, ~] = fileparts(baseFileName);
% Create base file name guaranteed to have .mat extension regardless of what user may have put in or omitted.
baseFileName = sprintf('%s.mat', baseFileNameNoExt);
fullFileName = fullfile(folder, baseFileName)
% Now save the mat file.
save(fullFileName, 'var1', 'secondVar', 'thirdVariable');
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