IMapIconScale.Exact

Syntax

Exact(Index: Integer): IGxImage;

Parameters

Index - scale tick mark index.

Description

The Exact property determines the icon for the values equal to the scale tick mark value.

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. The files "C:\Greater.gif", "C:\Exact.gif" and "C:\Less.gif", that contain the image, must be present in the file system.

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

Var

Map: IMap;

Layer: IMapLayer;

ImageVisual: IMapImageVisual;

ImageProp: IMapVisualIconProperty;

Scale: IMapIconScale;

Begin

Map := UiMap1.Map;

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

ImageVisual := Layer.Visuals.AddImageVisual;

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

ImageProp := ImageVisual.Image;

ImageProp.DataAdapter := ImageVisual.DataAdapter;

ImageVisual.Height.Value := 2;

ImageVisual.Width.Value := 2;

ImageProp.Dependent := True;

Scale := ImageProp.Scale;

Scale.Count := 1;

Scale.Value(0) := 50;

Scale.Greater(0) := GxImage.FromFile("C:\Greater.gif");

Scale.Exact(0) := GxImage.FromFile("C:\Exact.gif");

Scale.Less(0) := GxImage.FromFile("C:\Less.gif");

End Sub Button1OnClick;

After executing the example the icon factor is added to the Regions layer. The factor icon is determined by the scale:

The values greater than fifty are indicated with the icon; the values less than fifty - with the icon; the values equal to fifty - with the icon.