updateElement.m
eed2ae856a1eTekRSA-Freq-vs-Time

updateElement.m
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			% If specified within the control element OutputProcessingFcn or
			% InputPrescaler is applied to the property value first
			function updateElement(elem, EventData)
			try
			% Get value of the property that generated event
			tmpval = EventData.AffectedObject.(EventData.Source.Name);
			% scale the value if the control element has a prescaler
			if isprop(elem, 'OutputProcessingFcn')
			tmpval = elem.OutputProcessingFcn(tmpval);
			elseif isprop(elem, 'InputPrescaler')
			tmpval = tmpval*elem.InputPrescaler;
			end
			% Setting value of a matlab app elemen is time consuming, so do
			% this only if the value has actually changed
			if ~isequal(elem.Value,tmpval)
			elem.Value = tmpval;
			end
			catch
			warning(['Could not update the value of element with tag ''%s'' ',...
			'and value ''%s''. The element will be disabled.'],...
			elem.Tag,var2str(tmpval));
			elem.Enable='off';
			end
			end