TTowerSeries.Origin
TTowerSeries
property Origin: Double;
Unit
TeeSurfa
Description
The axis vertical position considered to be the "origin" of points.
Points with values below origin are considered "negatives".
By default, Origin is not used. Instead, the lowest Y value of the series is considered to be the origin.
See UseOrigin property to enable Origin.
Series1.UseOrigin := True ;
Series1.Origin := ( Series1.YValues.MinValue + Series1.YValues.MaxValue ) / 2 ;