MATLAB: Is it possible to construct the code below

function

% --- Executes on button press in Calculate. 
function Calculate_Callback(~, ~, handles)
% hObject    handle to Calculate (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
   ExPath1 = get(handles.Filename1, 'string');
  [x, x_1, x_2, x_3, x_4, x_5] = correctionModelworking1(ExPath1,'True',63,handles);
   ExPath2 = get(handles.Filename2, 'string');
  [x, x_1, x_2, x_3, x_4, x_5] = correctionModelworking1(ExPath2,'True',63,handles)
   ExPath3 = get(handles.Filename3, 'string');
  [x, x_1, x_2, x_3, x_4, x_5] = correctionModelworking1(ExPath3,'True',63,handles)
   ExPath4 = get(handles.Filename4, 'string');
  [x, x_1, x_2, x_3, x_4, x_5] = correctionModelworking1(ExPath4,'True',63,handles)
  ExPath5 = get(handles.Filename5, 'string');
  [x, x_1, x_2, x_3, x_4, x_5] = correctionModelworking1(ExPath5,'True',63,handles)
  ExPath6 = get(handles.Filename6, 'string');
  [x, x_1, x_2, x_3, x_4, x_5] = correctionModelworking1(ExPath6,'True',63,handles)

I ask, because when i select various files and press calculate the matlab program does not work. However, when I select one file at a time; the program runs with no problem.

Best Answer

You did not answer my question about the mechanism for selecting multiple files, so I will make a guess that you use uigetfile() with Multiselect On and store the result in handles.Filename1 string property.

% --- Executes on button press in Calculate. 
function Calculate_Callback(~, ~, handles)
% hObject    handle to Calculate (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
   paths = cellstr(get(handles.Filename1, 'string'));
   if length(paths) == 1
     paths = get([handles.Filename1, handles.Filename2, handles.Filename3, handles.Filename4, handles.Filename5, handles.Filename6], 'string');
   end
for K = 1 : length(paths)
     [x, x_1, x_2, x_3, x_4, x_5] = correctionModelworking1(paths{K},'True',63,handles);
end

Related Solutions

MATLAB: Is it possible to declare and function within another function? if not, Look at the code below

http://matlab.wikia.com/wiki/FAQ#How_can_I_share_data_between_callback_functions_in_my_GUI.3F

More specifically:

function Calculate1_Callback(~, ~, handles)
  ExPath1 = get(handles.Filename1, 'string');
    x, error, stat1, stat2, stat3] = correctionModelworking1(ExPath1,'true',2,'true');

Provided, that is, that your callback is being passed handles, as would be the case if you are using GUIDE.

MATLAB: PushButton repeat previously generated audio sample (with other pushbutton)

Ana - since using GUIDE, you can Store or retrieve UI data with the handles structure (this structure is passed into each callback). First though, you may want to use this structure to manage the names of the wav file. In the GUI's OpeningFcn you could do something like

handles.myWavFiles = {'guitar.wav', 'cinematic.wav', 'epicorchestra.wav'};
guidata(hObject, handles);

The call to guidata is important as it will ensure that the handles object is updated with the array of wav files so that all subsequent callbacks have access to this updated object.

In the pushbutton callback to play one of the random assets, you could do

if ~isempty(handles.myWavFiles)
    handles.wavFileIndex = randi(length(handles.myWavFiles),1,1); % a random file to play
    guidata(hObject, handles); % save the index of the file that will be played
    wavFileToPlay = handles.myWavFiles{handles.wavFileIndex};
    reader = audioread(wavFileToPlay);
    % etc.
end

Note how we save the index of the file that we are going to play to the handles structure. This way, we have access to file in the repeat button callback.

An alternative to using sound is to use the audioplayer object which offers a little more control over for the audio playback.

In the repeat button callback, you would do

if isfield(handles, 'wavFileIndex')
    wavFileToPlay = handles.myWavFiles{handles.wavFileIndex};
    reader = audioread(wavFileToPlay);
    % play the sound
end

The above code should allow you to randomly choose a wav file (to play) and then repeat the last played file.

As for "moving to the next GUI", I would recommend a different approach. When the user presses the NEXT button, just update your list of played wav files by removing the one that has already been played. That way you don't have to worry about passing data from one GUI to the next. The NEXT pushbutton callback might have code like

if isfield(handles, 'wavFileIndex')
    handles.myWavFiles(handles.wavFileIndex) = []; % we are removing this file from the list
    guidata(hObject, handles);
end

Then, when the user presses the play button, your code will randomly select a file from that shorter list. (See how we have the if ~isempty(handles.myWavFiles) check in that callback to ensure that we don't try to play something from an empty list.)

Best Answer

Related Solutions

MATLAB: Is it possible to declare and function within another function? if not, Look at the code below

MATLAB: PushButton repeat previously generated audio sample (with other pushbutton)

Related Question