MATLAB: Using slider in GUIDE to perform 2 tasks

matlab callbackslider

I have the following GUI: http://postimage.org/image/n0ekwaw4/ I'm trying to use the slider to perform 2 tasks: 1. display current slider number to blue textbox 2. display current slider number+1 to red textbox

Task 1 i can do it but task 2 i have no idea,anyone can give me solution? ps:new guy here,please forgive me if there are any mistake.

Best Answer

For task 2, do exactly the same thing you did with task 1, except add 1. You might be having trouble with adding 1 because you have strings. Lets say that you get the position of the slider and store it in variable P. Then do:

STR = num2str(str2double(P)+1);

and set the editbox 'string' property to STR.

Related Solutions

MATLAB: How to update the slider using an edit text

To make the slider update when the editbox is updated, put the update code in the editbox callback

function myEditBox_Callback(hObject,eventdata,handles)
val = str2double(get(hObject,'String'));
set(handles.slider1,'Value',val);
guidata(hObject,handles)

And then, in the slider's callback:

function slider1_Callback(hObject,eventdata,handles)
val = get(hObject,'Value');
set(handles.myEditBox,'String',num2str(val));
guidata(hObject,handles)

MATLAB: How to use ‘Edit Text’ efficiently in a GUI

If you use guidata(gcbo,handles), you save the string of your textbox in the 'handles' structure; in your pshbtn_callback you subsequently read this value from handles again. I personally prefer method 2, where you read out the string of the textbox in the button callback. This has a few advantages:

you only use the handles structure for what it's supppost to (storing handles)
you retrieve the string at the very moment you need it (ensures that you have the string that is actually shown in the textbox)

Method 1 is not wrong though, it will work.

Best Answer

Related Solutions

MATLAB: How to update the slider using an edit text

MATLAB: How to use ‘Edit Text’ efficiently in a GUI

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