GUI slider value change when majorstep is changed from default?
1 Ansicht (letzte 30 Tage)
Ältere Kommentare anzeigen
Hello,
i experienced a very strange behaviour of GUI (made with GUIDE) sliders, If I change the major step of a vertical slider, e.g. 0.02 and the minor step is 0.01, the value of the slider changes from 0 to 0.08. The inspector in guide shows 0 for the value, but the thumbbar of the slider is not at the bottommost position. If i start the GUI, the thumbbar is still at the same position, and if i check the value of the slider, it is 0.08 instead of 0.
Test it with a blank gui, add a vertical slider:
- max: 1.0
- min: 0.0
- sliderstep: [0.01,0.02]
- x: 0.01
- y: 0.02
- value: 0.0
when you start the gui, the slider is value is not 0.0
6 Kommentare
Antworten (3)
Azzi Abdelmalek
am 14 Jan. 2013
Bearbeitet: Azzi Abdelmalek
am 14 Jan. 2013
% In your opening function insert
% slider1 is your slider's tag
set(handles.slider1,'value',0,'Min',0,'Max',1,'Sliderstep',[0.01,0.02])
4 Kommentare
Azzi Abdelmalek
am 14 Jan. 2013
Try this in this order
set(handles.slider1,'Min',0,'Max',1,'Sliderstep',[0.01,0.02])
set(handles.slider1,'value',0)
%or
set(handles.slider1,'Min',0,'Max',1,'Sliderstep',[0.01,0.02],'value',0)
0 Kommentare
Image Analyst
am 15 Jan. 2013
Bearbeitet: Image Analyst
am 15 Jan. 2013
I'm not able to reproduce. I displayed the value in the movement callback and it was exactly as expected: 0.01 after the first small click, and incrementing by 0.01 or 0.02 depending on where in the slider you clicked.
% --- Executes on slider movement.
function slider1_Callback(hObject, eventdata, handles)
% hObject handle to slider1 (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
% Hints: get(hObject,'Value') returns position of slider
% get(hObject,'Min') and get(hObject,'Max') to determine range of slider
sliderValue = get(hObject,'Value') % Spit value out to command line.
return;
The thumbbar of the slider also does not move when I change the step values. Since the value is 0 it stays slammed up against one side. I'm running R2012b 64 bit on Windows 7.
9 Kommentare
Jan
am 18 Jan. 2013
So would this be a work aorund?
set(handles.slider1, 'value', 1);
drawnow;
set(handles.slider1, 'value', 0);
Siehe auch
Kategorien
Mehr zu Migrate GUIDE Apps finden Sie in Help Center und File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!