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how to clear ui control callback error

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vandana krishna
vandana krishna 2019-5-4
编辑： Adam Danz 2019-5-6
%%%%%
Reference to non-existent field 'x1'.
Error in aliwork>pushbutton1_Callback (line 188)
x1=handles.metricdata.x1;
Error in gui_mainfcn (line 95)
feval(varargin{:});
Error in aliwork (line 19)
gui_mainfcn(gui_State, varargin{:});
Error while evaluating UIControl Callback.
%%%%
how to clear this error????

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回答（1 个）

Adam Danz
Adam Danz 2019-5-4
编辑：Adam Danz 2019-5-6
In this line
x1=handles.metricdata.x1;
"x1" is not a field within the structure "metricdata". "metricdata" is most likely a handle to a graphics object or some object within your GUI. To confirm,
isstruct(handles.metricdata) % confirm that handles.metricdata is a stucture
% To see fields,
handles.metricdata
%-or-
fieldnames(handles.metricdata)

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