TdxChartXYDiagram.ZoomIn Method

Zooms the diagram in by a large step.

Declaration

procedure ZoomIn;

Call ZoomIn and ZoomOut procedures to zoom the diagram by the axis of arguments and the axis of values in code. You can use the Chart control’s ZoomOptions.LargeStep property to adjust the zoom increment for this operation.

VCL Chart Control: Zoom In

ZoomIn and ZoomOut procedure calls produce the same effect as Zoom In and Zoom Out mouse actions, respectively.

Note

To reset the zoom factor to 100% by the axis of arguments and the axis of values and display the diagram in full, call the ResetZoom procedure.

A ZoomIn procedure call zooms the diagram in only if the following conditions are met:

The ZoomOptions.AxisXZoomingEnabled or ZoomOptions.AxisYZoomingEnabled property is set to True. If only one of these properties is set to True, the ZoomIn procedure zooms the diagram in only by the corresponding axis.
The current zoom factor by the axis of arguments or the axis of values is less than the ZoomOptions.AxisXMaxZoomPercent or ZoomOptions.AxisYMaxZoomPercent property value, respectively.