MATLAB: Remove zeros from a number

guidematlab gui

Hi,

I want to preform calculations with a number excluding the zeros. The number is entered in a textbox so it's totally random.

for example, the user enters 2000, so can I extract 2 from this? Or say user enters 100000, can I extract only the non zero digit?

Thanks,

Rana

Best Answer

Just get the edit box contents and set the 0's to nulls:

editBoxContents = handles.edit1.String;
editBoxContents(editBoxContents == '0') == []

If you want the number, just add

theNumber = str2double(editBoxContents);

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The GUIs built by GUIDE use the handles structure to share the handles for all the GUI objects, for example:

handles.edit1 %this is the handle for one edit box, edit1 is the box name
get(handles.edit1,'String') %gives you what's inside the edit box 1
%This will put your message on one text box
set(handles.text1,'String','Please enter a positive number.')

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For your example you can edit the edit box callback and add a detection, for example:

if str2double(get(handles.edit1,'String'))<0
%Warn the user about the negative input
set(handles.edit1,'String','0') %put zero (default value) on the edit box 
end

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set(handles.edit1, 'String', '');    %example

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