Loading in to the POPUP menu of GUI

hello.. Is there a code to load a value to the popup menu from .mat file... there should be an option to select or change the data even after loading the value!!

Answer 1

[madhu T S]

hello Yoav Livneh and Geoff Hayes.. thanks for your valuable comments.. I somehow got the answer for the above question and I wud like to share with you ppl..

I have 5 options in the POPUP menu as awake sleeping waiting in gym out

we have to compare the data got from the .mat file and then change the value property according to it. he I'm sharing my code of load push button..

call back function of pushbutton will look like below

function load_pb_Callback(hObject, eventdata, handles) [filename pathname] = uigetfile('*.mat','Select the MATLAB code file'); L = load( fullfile( pathname, filename ) ); varnames = fieldnames(L); % Message=num2str(L.(varnames{1})); Status= num2str(L.(varnames{2})); if strcmp(Status,'awake') set(handles.popup,'value', 1) elseif strcmp(Status,'sleeping') set(handles.popup,'value', 2) elseif strcmp(Status,'waiting') set(handles.popup,'value',3) elseif strcmp(Status,'out') set(handles.popup,'value', 5) elseif strcmp(Status,'in gym') set(handles.popup,'value', 4) end

regards madhu

Answer 2

[Geoff Hayes]

Madhu - you can always reset the data in the popup menu by doing something like

 set(handles.popupmenu1,'String',{'option a', 'option b', 'option c'});

The above line of code assumes that you have create a GUI using GUIDE and so have access to the handles structure and, in particular, the popup menu which is named popupmenu1.

If you wish to load some string options from a mat file, then you could do that as well. For example, suppose that we have created a mat file as

 % create the cell array of string options
 myOptions = {'A1','A2','A3'};

 % save to a mat file
 save('myOptions.mat','myOptions');

Then, in your GUI (perhaps the _OpeningFcn or in a callback) you would do the following

 % load the data from the mat file
 data = load('myOptions.mat','myOptions');

 % update the popup menu
 set(handles.popupmenu1,'String',data.myOptions);

Try the above and see what happens!

[madhu T S]

Hi Geoff Hayes... thank you very much for your response.. I think I was not clear in my question... let me make it clear

considering your example... the handles of popupmenu1 will be updated with 'option a', 'option b', 'option c', then I will select any one of those and save in the data.mat file with tag name text_popupmenu1... when I want to load the data.mat file sometime later it will load only the saved one in to the string of the popupmenu... now my point is, can I have a provision to select the other two too with the loaded option after loading with some pushbutton

Answer 3

[Yoav Livneh]

You need to save and load the "Value" property of the popup menu. For example, taking Geoff Hayes's case:

% get the value from the popup menu
val = get(handles.popupmenu1,'value');
% save the data
save('selected_value.mat',val);
% load the data
val = load('selected_value.mat');
% update the popup menu
set(handles.popupmenu1,'value',val.val);