Usa las propiedades
YOrigin y UseYOrigin; de la ayuda de TeeChart:
Cita:
Empezado por Tee chart help
property YOrigin : Double;
Description
Default Value: 0
The YOrigin property determines the axis value used as a common bottom for all Bar points.
The UseYOrigin property must be True (the default) to use the YOrigin property.
Bars with a value bigger than YOrigin are drawn in one direction and Bars with a lower value are drawn in the opposite direction.
This applies both to TBarSeries and THorizBarSeries components.
property UseYOrigin : Boolean;
Description
Default Value: True
The UseYOrigin property defines if Bars will be bottom aligned to the YOrigin property value.
When False, the minimum of all Bar values is used as the Bar origins value.
When True, the YOrigin property is used as the start point for Bars.
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Hasta luego.