MATLAB: Pushbutton

pushbutton

Hi,

can you help me?

I have pushbutton and static text. I need: If I press pushbutton, the value in static text should increase with number 1.

Thank you for your help

Best Answer

Your code:

function pushbutton1_Callback(hObject, eventdata, handles) 
% nacitanie prvku 
h=findobj(0,'Type','figure','Tag','figure1'); 
UserData=get(h,'UserData'); 
prvok=0; 
if ((str2double(get(handles.pushbutton1,'string'))) == 1) 
for i=1:UserData.pocet_vetiev; 
prvok=prvok+1; 
end 
set(handles.text1, 'String',{prvok}); 
end

is auto-generated code from GUIDE that will be run every time the button is pushed. That's what the pushbutton callback function does. As such, you don't need to attempt to check if it is pushed, which is what I think you are trying to do here:

if ((str2double(get(handles.pushbutton1,'string'))) == 1)

the solution here is a one liner (two if you count the function identifier):

function pushbutton1_Callback(hObject, eventdata, handles) 
set(h.text1,'string',num2str(str2double(get(h.text1,'string'))+1))

That's what Sean meant by use the engine part of his code.

Related Solutions

MATLAB: H i every one , i need to declare a counter such that if any one of the four buttons is pressed a specefic funtion specified in the fifth button is performed.Suppose UserData can not be used it reserved for something else

Use guidata, which calls setappdata and getappdata internally:

function pushbutton1_Callback(hObject, eventdata, handles)
handles = guidata(hObject);
handles.counter = 1;
guidata(hObject, handles);
% And the same for the other callbacks...
function pushbutton5_Callback(hObject, eventdata, handles)
handles = guidata(hObject);
switch handles.counter
  case 1
  case 2
  case 3
  case 4
  otherwise  % No SWITCH without OTHERWISE
    error('Programming error')
  end
end

MATLAB: How to store values from push button and then add all values and display in a static text box

If you're using GUIDE for the first time: don't. Do not teach yourself a tool that will be removed from Matlab in one of the next releases. For general advice and examples for how to create a GUI (and avoid using GUIDE), have look at this thread.

To answer the question in your comment:

%in your startup function initialize handles.ValueInSlots
function callback_machine_size(hObject,~)
%this is the callback for the machine size category
str=get(hObject,'String');
handles=guidata(hObject);
handles.ValueInSlots(1)=str2double(str);
guidata(hObject,handles)%store back to figure

end
function callback_knotting_type(hObject,~)
%this is the callback for the knotting type category
str=get(hObject,'String');
handles=guidata(hObject);
handles.ValueInSlots(2)=str2double(str);
guidata(hObject,handles)%store back to figure
end
function callback_calculate(hObject,~)
handles=guidata(hObject);
val=sum(handles.ValueInSlots);
str=sprintf('%d',val);
set(handles.text_field,'String',str)
end

Best Answer

Related Solutions

MATLAB: H i every one , i need to declare a counter such that if any one of the four buttons is pressed a specefic funtion specified in the fifth button is performed.Suppose UserData can not be used it reserved for something else

MATLAB: How to store values from push button and then add all values and display in a static text box

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