TChartSeries.AddNull
TChartSeries
function AddNull(Const Value: TChartValue): Integer; overload;
Unit
TeEngine
Description
The TChartSeries AddNull method can be used to insert new Series Null points when you do not have an X Value for the point.
This function inserts a new empty point in the Series. Series points before and after do not connect across the space left by the Null point.
The function returns the new point position in the Values list.
Example
In this example the Axis and Legend labels ("1st", "2nd", "null", etc) are generated by the ALabel parameter of the Add and AddNull methods to clarify how points are added. In your own Chart, creating and displaying Labels is optional.