Numbers in a editbox to the workspace

Hi

I need to make a simple gui that has a editbox and a pushbutton. What I need help with doing, is that when I put a number inside the editbox and presses the pushbutton, then I need the number to be saved on the workspace. fx:

Editbox [ 2 ] [Push button] <-- after pressing that

I want it to say on the workspace: a = 2

And if I change Editbox [ 2 ] to Editbox [ 7 ], then I want the workspace to be updated to say: a = 7.

How do I do that? im quite lost here..

Answer 1

[Sean de Wolski]

Here is a small example:

figure('units','norm');
hE = uicontrol('style','edit','units','norm','position',[.4 .4 .2 .2]);
uicontrol('style','push','units','norm','position',[.1 .1 .1 .1],'string',...
  'Save2Workspace','callback',@(src,evt)assignin('base','X',str2double(get(hE,'string'))));

[Mikkel]

It works, but if I want to use guide to make my gui, what should I type?

I got

function edit1_Callback(hObject, eventdata, handles)

and

function pushbutton1_Callback(hObject, eventdata, handles)

What should I type? to make the same thing?

[Sean de Wolski]

So here's a lesson in good programmign practice:

The edit callback should check to make sure the input is indeed a number.

Something like this:

val = str2double(get(hObject,'string'));
if isnan(val)
 errordlg('You entered non numeric input');
end

Then the push button callback would be the equivalent of what I have above translated to guide

assignin('base','X',str2double(get(handles.edit1,'string'))));

Note: there may be typos this isn't tested.

[Mikkel]

You are a darling! its just what I needed :) if you are a guru in matlab gui maybe you could help me with my other problem. Have another quition, and some one tryed to anwser it, but it hasent been solved yet. :/