GUI Checkboxes and plot button please help

Hello,

I have two check boxes AB and CD and a plot button. AB and CD are array of numbers that I want to plot depending on which one is checked, and I would not like it to plot until I click the plot button. This is my code below, the problem is that it doesn't output anything and I get an error: Not enough input arguments. Please Help:

function varargout = Try1(varargin)
gui_Singleton = 1;
gui_State = struct('gui_Name',       mfilename, ...
                   'gui_Singleton',  gui_Singleton, ...
                   'gui_OpeningFcn', @Try1_OpeningFcn, ...
                   'gui_OutputFcn',  @Try1_OutputFcn, ...
                   'gui_LayoutFcn',  [] , ...
                   'gui_Callback',   []);
if nargin && ischar(varargin{1})
    gui_State.gui_Callback = str2func(varargin{1});
end

if nargout
    [varargout{1:nargout}] = gui_mainfcn(gui_State, varargin{:});
else
    gui_mainfcn(gui_State, varargin{:});
end
% End initialization code - DO NOT EDIT
end

function Try1_OpeningFcn(hObject, eventdata, handles, varargin)
handles.output = hObject;
guidata(hObject, handles);
end

function varargout = Try1_OutputFcn(hObject, eventdata, handles) 
varargout{1} = handles.output;
end

function AB_box_Callback(hObject, eventdata, handles)
AB_status=get(handles.AB_box,'value');
end

function CD_box_Callback(hObject, eventdata, handles)
CD_status=get(handles.soc_box,'value');
 end

function plot_button_Callback(hObject, eventdata, handles, v_status,soc_status)
AB = [5  5.7  10.3 15.7];
CD=[45 45 22 11];   

if get(AB_status,value)==1 
    plot(AB);
elseif get(CD_status)==1
    plot(CD);
end

end

Answer 1

[Roberto]

There's always more than one way to do everything! It depends on what you want!! try this code and see if that's what you want to do... but again it depends on how your app is managing data, I used nested functions to keep handles of objects. But is not the only way to do it.. Good luck!

 function myGUI
    close all ; h.figure = figure ;
    h.chk1 = uicontrol(h.figure,'Style','checkbox','Position',[5 5 200 20],'String','Some text','Value',1);
    h.chk2 = uicontrol(h.figure,'Style','checkbox','Position',[5 25 200 20],'String','Other text','Value',1);
    h.btn1 = uicontrol(h.figure,'Style','pushbutton','Position',[5 45 200 20],'String','plot','Callback',@btnCallback);
    h.axes = axes('position',[.4 .05 .5 .9]);
    AB = [5  5.7  10.3 15.7]; CD=[45 45 22 11];   
    function btnCallback(~,~)   
        cla ;
        if get(h.chk1,'Value')==1 
            plot(AB);
        elseif get(h.chk2,'Value')==1
            plot(CD);
        end
    end
end

[Sarah]

This works! Thank you very much!

Answer 2

[Roberto]

I see now... the problem... inthe 'get' function. the proper way of getting a property is:

get(handle,'Value') ;

So check this code:

function plot_button_Callback(hObject, eventdata, handles, v_status,soc_status)
AB = [5  5.7  10.3 15.7];
CD=[45 45 22 11];   
if get(AB_status,'value')==1 
    plot(AB);
elseif get(CD_status,'value')==1
    plot(CD);
end
end

[Sarah]

Thank you, but this still does not work the checkboxes do not have any output so when I click the plot button, it does not know which one I picked. Could you please show me how to get it to output?

Answer 3

[Jan]

function AB_box_Callback(hObject, eventdata, handles)
handles = guidata(hObject);
handles.AB_status = get(handles.AB_box,'value');
handles.CD_status = 0;
guidata(hObject, handles);
end

function CD_box_Callback(hObject, eventdata, handles)
handles = guidata(hObject);
handles.AB_status = 0;
handles.CD_status = get(handles.soc_box,'value');
guidata(hObject, handles);
end

function plot_button_Callback(hObject, eventdata, handles, v_status,soc_status)
handles = guidata(hObject);
AB = [5  5.7  10.3 15.7];
CD=[45 45 22 11];   

if handles.AB_status
    plot(AB);
elseif handles.CD_status
    plot(CD);
end  
end

You wrote "get(AB_status,value)==1", but here the get() command is not used as explained in the documentation. The first argument must be an HG-handle, but in your code a local variable should be provided.

Nevertheless, AB_status is not a local variable. It was created inside the function AB_box_Callback. But variables exist in the current workspace only and as soon as this function is left, the local variables are cleared also. Therefore you need to store it persistently and for this job guidata is applied usually.

You find a bunch of equivalent discussion when you search for "share data in gui" in this forum. Searching in the forum is recommended before asking a question.

[Sarah]

I did search without success, I am new into matlab, if anyone can help with this I would really appreciate it.

[Roberto]

try this video tutorials: here follow it step-by-step, that's how I started