IMapMarkerVisual.Latitude

Fore Syntax

Latitude: IMapVisualNumericProperty;

Fore.NET Syntax

Latitude: Prognoz.Platform.Interop.Map.IMapVisualNumericProperty;

Description

The Latitude property returns latitude parameters for a geolocation marker.

Comments

To work with longitude parameters of geolocation marker, use the IMapMarkerVisual.Longitude property.

Fore Example

Executing the example requires a form containing the MapBox component with the MapBox1 identifier and the UiMap component with the UiMap1 identifier. The UiMap1 component must contain a connected map and must be a data source for the MapBox1 component.

The example also uses the VisualDynamicDataAdapter class, which is described in IMapTimeDynamicDataAdapter.Data.

Add links to the Drawing, Metabase system assemblies.

Sub UserProc;
Var
    Map: IMap;
    Layer: IMapLayer;
    MarkerVis: IMapMarkerVisual;
    Color: IMapVisualColorProperty;
    ColorCollection: IMapColorCollection;
    NumProp: IMapVisualNumericProperty;
    ItemsNames: Array[1] Of string;
Begin
    // Get map
    Map := UiMap1.Map;
    // Get the "Regions" layer
    Layer := Map.Layers.FindByName("Regions");
    // Add a geolocation marker
    MarkerVis := Layer.Visuals.AddMarkerVisual;
    MarkerVis.BeginUpdate;
    // Set data source for marker
    MarkerVis.DataAdapter := New VisualDynamicDataAdapter.Create As IMapTimeDynamicDataAdapter;
    MarkerVis.Visible := True;
    // Set marker color
    Color := MarkerVis.Color;
    Color.Dependent := False;
    ColorCollection := Color.Values;
    ColorCollection.Count := 1;
    ColorCollection.Item(0) := GxColor.FromName("Blue");
    // Set marker longitude
    NumProp := MarkerVis.Longitude;
    NumProp.Dependent := False;
    NumProp.Value := 41.850033;
    // Set marker latitude
    NumProp := MarkerVis.Latitude;
    NumProp.Dependent := False;
    NumProp.Value := -87.6500523;
    // Set marker name
    ItemsNames[0] := "Geolocation marker";
    MarkerVis.ItemsNames := ItemsNames;
    MarkerVis.EndUpdate;
End Sub UserProc;

After executing the example a geolocation marker is added to the map.

Fore.NET Example

The requirements and result of the Fore.NET example execution match with those in the Fore example. Use Fore.NET analogs instead of Fore components.

Public Sub UserProc();
Var
    Map: IMap;
    Layer: IMapLayer;
    MarkerVis: IMapMarkerVisual;
    Color: IMapVisualColorProperty;
    ColorCollection: IMapColorCollection;
    GxColor: GxColorClass = New GxColorClass();
    NumProp: IMapVisualNumericProperty;
    ItemsNames: Array[1] Of string;
Begin
    // Get map
    Map := uiMapNet1.Map;
    // Get the "Regions" layer
    Layer := Map.Layers.FindByName["Regions"];
    // Add a geolocation marker
    MarkerVis := Layer.Visuals.AddMarkerVisual();
    MarkerVis.BeginUpdate();
    // Set data source for marker
    MarkerVis.DataAdapter := New VisualDynamicDataAdapter.Create() As IMapTimeDynamicDataAdapter;
    MarkerVis.Visible := True;
    // Set marker color
    Color := MarkerVis.Color;
    Color.Dependent := False;
    ColorCollection := Color.Values;
    ColorCollection.Count := 1;
    ColorCollection.Item[0] := GxColor.FromName("Blue");
    // Set marker longitude
    NumProp := MarkerVis.Longitude;
    NumProp.Dependent := False;
    NumProp.Value := 41.850033;
    // Set marker latitude
    NumProp := MarkerVis.Latitude;
    NumProp.Dependent := False;
    NumProp.Value := -87.6500523;
    // Set marker name
    ItemsNames[0] := "Geolocation marker";
    MarkerVis.ItemsNames := ItemsNames;
    MarkerVis.EndUpdate();
End Sub UserProc;