IMapPieVisual.Proportional

Syntax

Proportional: Boolean;

Description

The Proportional property determines whether the indicator is proportional.

Comments

Available values:

True - all sectors of the pie inficator have the same size (left image).
False - the sector size depends on indicator data (right image).

Example

Executing the example requires a form, a button named Button1 on the form, the UiMap component named UiMap1 that is a data source for the MapBox component. The map must be connected to the UiMap1 component. The VisualDataAdapter class, that creates a dynamic data source, must also be implemented. The class example is contained in the IMapVisual.DataAdapter property description.

Sub Button1OnClick(Sender: Object; Args: IMouseEventArgs);

Var

Map: IMap;

Layer: IMapLayer;

PieVisual: IMapPieVisual;

Color: IMapVisualColorProperty;

Collection: IMapColorCollection;

Begin

Map := UiMap1.Map;

Layer := Map.Layers.FindByName("Regions");

BarVisual := Layer.Visuals.AddBarVisual;

BarVisual.DataAdapter := New VisualDataAdapter.Create As IMapDynamicDataAdapter;

Color := PieVisual.Color;

Color.DataAdapter := PieVisual.DataAdapter;

Color.Dependent := False;

Collection := Color.Values;

Collection.Count := 2;

Collection.Item(0) := GxColor.FromName("Red");

Collection.Item(1) := GxColor.FromName("Blue");

PieVisual.Radius.Value := 2.5;

PieVisual.Proportional := False;

End Sub Button1OnClick;

After executing the example, the pie indicator is added to the Regions layer, red and blue colors are used to hatch this indicator. The size of indicator sectors depends on the data.