Not to be confused with an empty point, our "zero range point" is in fact a Range Columns/Bars chart point with the same high and low values. Many chart applications forgot this edge test case and show nothing at all on the chart. But this is rather a traditional representation for an empty point - i.e. no point at all, null or missing point. The immediate simple hack below is far from perfect: we slightly change the value of high or low, to show a small difference and display a thin line instead. Problem is when data labels or tooltips are used, they may show this changed adjusted value, not the original value. In either case, when it is more important to you to represent this "zero" value somehow, rather than nothing at all, you can use this technique.