IMapNumericScale.Number

Syntax

Number(Index: Integer; Impact: MapScaleSettingImpact): Double;

Parameters

Index. Scale tick mark index.

Impact. Position relative to scale tick mark value.

Description

The Number property determines the number for the specified tick mark scale value.

Example

Executing the example requires a form with the following components: the Button component named Button1, the MapBox component named MapBox1, and the UiMap component named UiMap1. UiMap1 is a data source for MapBox1. A map should be connected to the UiMap1 component. The VisualDataAdapter class that creates a dynamic data source should also be implemented. The class example is contained in the IMapVisual.DataAdapter property description.

The example is a handler of the OnClick event for the Button1 component.

Add links to the ExtCtrls, Forms, and Map system assemblies.

Sub Button1OnClick(Sender: Object; Args: IMouseEventArgs);
Var
    Map: IMap;
    Layer: IMapLayer;
    BarVisual: IMapBarVisual;
    Height: IMapVisualNumericProperty;
    Scale: IMapNumericScale;
Begin
    Map := UiMap1.Map;
    Layer := Map.Layers.FindByName("Regions");
    BarVisual := Layer.Visuals.AddBarVisual;
    BarVisual.DataAdapter := New VisualDataAdapter.Create As IMapDynamicDataAdapter;
    Height := BarVisual.Height;
    Height.DataAdapter := BarVisual.DataAdapter;
    Height.Dependent := True;
    Scale := New DxMapNumericScale.Create As IMapNumericScale;
    Scale.Count := 1;
    Scale.Value(0) := 50;
    Scale.Number(0, MapScaleSettingImpact.Greater) := 2;
    Scale.Number(0, MapScaleSettingImpact.Exact) := 4;
    Scale.Number(0, MapScaleSettingImpact.Less) := 6;
    Height.Scale := Scale;
End Sub Button1OnClick;

After executing the example the bar indicator, which height is determined using the scale, is added to the Regions layer.

See also:

IMapNumericScale