Help with GUI - Push button

Hello! I created a GUI with Matlab, that gives me two numbers as output. These two numbers are visualized into two 'Edit text' commands. Now, what I need to do is to save this two numbers in a .txt file, by using a 'Push button' command. Let's suppose that the tags associated to the 'Edit text' commands (where the two numbers are visualized) are num1 and num2, while the tag associated to the 'Push button' command is save . What I want to do when pressing the Push button save is: (1) choose the folder where to save the two numbers; (2) save the two numbers as a unique .txt file containing the two numbers (e.g. numbers_file.txt or number_file.dat). How can I translate this into a matlab code (i.e. the callback function of the push button save ?). Thank you

Answer 1

[Geoff Hayes]

aurc89 - assuming that you have used GUIDE, the callback function for the save button would look something like

 function save_Callback(hObject, eventdata, handles)

 % grab the numbers from the two text widgets
 val1 = char(get(handles.num1,'String'));
 val2 = char(get(handles.num2,'String'));

 % create the unique file name given these two numbers
 filename = [val1 '_' val2 '_file.txt'];

 % get the directory to save the data to
 foldername = uigetdir;

 % ensure the folder name is valid
 if ischar(foldername)

      % update the file name to include the folder name
      filename = fullfile(foldername,filename);

      % open the file
      fid = fopen(filename,'w');

      if fid>0
          % write the data to file
          fprintf(fid,'%s %s\n',val1,val2);
          fclose(fid);
      end
 end

The above assumes that integers are in the num1 and num2 fields, so you may need to adapt the code for floats. Try the above and see what happens!

[aurc89]

thank you very much, it works! Just one more question: supposed I already know the path folder, instead of using

uigetdir

that opens standard dialog box for selecting directory, what can I use ?

[Geoff Hayes]

If you already know the path folder, then just replace

 foldername = uigetdir;

with

 foldername = '\Users\geoff\whatever\'; % or whatever path you wish

[aurc89]

Thanks a lot! :)

Answer 2

[Iain]

This should be what you need:

 value1 = get(num1,'String')

 folder =  uigetdir();

 dlmwrite - though you might go for a csv instead of .txt...

[aurc89]

The first two rows are ok. Once I choose the folder I need to write the name of the file I want to save and save it , but I don't know how