Enter a string instead of a number in edit text, warning message matlab gui
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i created a gui with edit text and a pushbutton. if you enter a string instead of a number in an edit text, i want a warning message, 'You've entered a letter. Please enter a number!'
i know the warning message code; warndlg('You've entered a letter. Please enter a number!','Warning','modal');
but i dont know string/number contradiction. it can be done with if loop i believe. but how? please help.
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