How can i define variables in gui?
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Hey everyone I want to define variables like:
function pushbutton15_Callback(hObject, eventdata, handles)
audio = get(handles.listbox1,'String');
file = get(handles.listbox1, 'Value');
audiofile = audioread(audio{file});
and I want to use "audiofile" in math operators.
what I need to do?
9 Comments
Accepted Answer
Jan
on 7 Jun 2019
It depends on what "use "audiofile" in math operators" mean. After your code, audiofile is a variable, which contains the signal of a sound. You can work with this variables as usual - inside this callback. If you want to share the contents of the variable with other callbacks:
function pushbutton15_Callback(hObject, eventdata, handles)
fileName = get(handles.listbox1,'String');
index = get(handles.listbox1, 'Value');
audioSignal = audioread(fileName{index});
handles.audioSignal = audioSignal;
guidata(hObject, handles);
end
function anyOther_Callback(hObject, eventdata, handles)
audioSignal = handles.audioSignal;
... % Do what you like with the signal here
end
I've used more meaningful names for the variables here. The list of files names is not really "audio", and the chosen index is not really "file". The contents of the file is not really "audiofile".
"Can I do that I want with different buttons One button for every variable? Using uigetfile"
Again, it depends on what you want to do. "One button for every variable" is not clear. Of course you can use uigetfile, so which problem do you have with it?
2 Comments
Jan
on 7 Jun 2019
I do not understand, why you mean, that listbox items have to be variables. Perhaps this is useful:
...
function YourGUI_OpeningFcn(hObject, EventData, handles)
baseFolder = 'C:\Your\Data\Folder'; % Or uigetdir() ?
fileList = dir(fullfile(baseFolder, '*.wav'));
set(handles.popupmenu1, 'String', {fileList.name});
handles.baseFolder = baseFolder;
guidata(hObject, handles);
end
function pushbutton15_Callback(hObject, eventdata, handles)
fileName = get(handles.listbox1,'String');
index = get(handles.listbox1, 'Value');
audioSignal = audioread(fullfile(handles.baseFolder, fileName{index}));
handles.audioSignal = audioSignal;
guidata(hObject, handles);
end
This populates the popupmenu with the file names contained in the specified folder. You can access these files later on.
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