How to assign a value using a RADIO Button in the GUI

2012 6 20
2 个回答
回答已采纳
更新时间：2015 3 25
3 次查看（30 天）

0 个投票

I want to use 2 radio buttons in a GUI in this way:
radiobutton1 -> acceleration = 1; radiobutton2 -> acceleration = -1;
Then I want to use this "acceleration" within other functions that are used by the GUI.
I've no problems with "Edit text", "Push buttons" and others, but I'm struggling with the Radio Button. For example I can use a value with the "Edit text" simply buy writing
value = handles.EDIT_TEXT;
But I'm not able to do the same with a radio button.
Thanks in advance!

请先登录，再回答此问题。

 采纳的回答

debasish
debasish 2012-6-20

3 个投票

1.Create the two radio buttons in a button panel
2.Set the properties of each radio button.(tag,font,string,etc).lets assume tags be 'accel1_radiobutton' and 'accel2_radiobutton'.
Set the tag of button panel to 'acceleration_buttongroup'.
3.Add this line of code to the opening function
set(handles.acceleration_buttongroup, 'SelectionChangeFcn', @acceleration_buttongroup_SelectionChangeFcn);
4.Next,add the following function at the very end of .m file
function acceleration_buttongroup_SelectionChangeFcn(hObject, eventdata)
handles=guidata(hObject);
switch get(eventdata.Newvalue, 'Tag' )
case 'accel1_radiobutton'
handles.value= 1; %%any handle where value is to be stored
case accel2_radiobutton
%%similarly set the value '-1'

5 个评论
显示 3更早的评论 隐藏 3更早的评论

Future Science
Future Science 2012-6-20
I get this error, if I set handles.value = 1 (or handles.ACCELERATION = 1)
Reference to non-existent field 'value'. (or 'ACCELERATION')
Error in my_gui_function>Start_Callback (line 865)
acceleration = handles.value;
Walter Roberson
Walter Roberson 2012-6-20
At the end of the code that debasish shows, add
guidata(hObject, handles);
Future Science
Future Science 2012-6-20
It works!
My fault for writing h0bject instead of hObject!
Thanks to the both of you!
PS for anybodyelse who's reading this:
it is:
switch get(eventdata.NewValue, 'Tag' ) instead of .Newvalue
and then of course just write "end" after your last "case".
Hi guys. So far so good. But i have a problem thow. The handles structure isnt gettin updateed with the new variable after exiting the buttongroup function. ANy recomendations?

请先登录，再进行评论。

更多回答（1 个）

Future Science
Future Science 2012-6-20

0 个投票

Another question: even tough the radio button appears to be selected by default, if I don't manually select "acceleration2" and then "acceleration1" it won't load a value.
Is there a workaround for this?

3 个评论
显示 1更早的评论 隐藏 1更早的评论

Walter Roberson
Walter Roberson 2012-6-20
After you have done the set() that debasish mentioned in step 3, then invoke
acceleration_buttongroup_SelectionChangeFcn( handles.acceleration_buttongroup, struct( 'NewValue', handles.accel1_radiobutton ) )
That is, you will be calling the callback routine with artificial values.
thank you @walter roberson! really helped! was stuck with the same problem.

请先登录，再进行评论。

类别

在 帮助中心 和 File Exchange 中查找有关 MATLAB 的更多信息

产品

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by