Numbers in a editbox to the workspace

Question

Mikkel 2012-6-28

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/42264-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..

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Answer 1

Sean de Wolski 2012-6-28

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https://ww2.mathworks.cn/matlabcentral/answers/42264-numbers-in-a-editbox-to-the-workspace#answer_52025

在 MATLAB Online 中打开

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'))));

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Sean de Wolski 2012-6-28

在 MATLAB Online 中打开

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 2012-6-28

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. :/

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