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Bill Lorensen authored
vtkChartBox: replaced a retained, returned pointer with a stored value. vtkChartXY: Added check for range[0] == range[1] and avoid division by zero. vtkFunctionParser: Added check for division of a vector by 0.0. vtkUnstructuredGridQuadricDecimation: first time through loop, lasterror is 0.0. Avoid division by zero by checking for 0.0.
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