HeatLayer allows you to better visualize data by making areas of high concentration “hotter” using warmer colors and low density areas visually cooler.

• System.Object
  • ThinkGeo.MapSuite.Core.Layer
    • ThinkGeo.MapSuite.Core.HeatLayer

HeatLayer()

• This is the default constructor of the class.

• N/A

HeatLayer(FeatureSource)

• This is a constructor for the class.

• None

• featureSource
  • Type:FeatureSource
  • Description:This parameter is the FeatureSource that use to be drawn.

RequestDrawing()

• N/A

• N/A

• Type:Void
• Description:N/A

RequestDrawing(RectangleShape)

• N/A

• N/A

• Type:Void
• Description:N/A

• extentToRefresh
  • Type:RectangleShape
  • Description:N/A

RequestDrawing(IEnumerable<RectangleShape>)

• N/A

• N/A

• Type:Void
• Description:N/A

• extentsToRefresh
  • Type:IEnumerable<RectangleShape>
  • Description:N/A

RequestDrawing(TimeSpan)

• N/A

• N/A

• Type:Void
• Description:N/A

• bufferTime
  • Type:TimeSpan
  • Description:N/A

RequestDrawing(TimeSpan,RequestDrawingBufferTimeType)

• N/A

• N/A

• Type:Void
• Description:N/A

• bufferTime
  • Type:TimeSpan
  • Description:N/A

• bufferTimeType
  • Type:RequestDrawingBufferTimeType
  • Description:N/A

RequestDrawing(RectangleShape,TimeSpan)

• N/A

• N/A

• Type:Void
• Description:N/A

• extentToRefresh
  • Type:RectangleShape
  • Description:N/A

• bufferTime
  • Type:TimeSpan
  • Description:N/A

RequestDrawing(RectangleShape,TimeSpan,RequestDrawingBufferTimeType)

• N/A

• N/A

• Type:Void
• Description:N/A

• extentToRefresh
  • Type:RectangleShape
  • Description:N/A

• bufferTime
  • Type:TimeSpan
  • Description:N/A

• bufferTimeType
  • Type:RequestDrawingBufferTimeType
  • Description:N/A

RequestDrawing(IEnumerable<RectangleShape>,TimeSpan)

• N/A

• N/A

• Type:Void
• Description:N/A

• extentsToRefresh
  • Type:IEnumerable<RectangleShape>
  • Description:N/A

• bufferTime
  • Type:TimeSpan
  • Description:N/A

RequestDrawing(IEnumerable<RectangleShape>,TimeSpan,RequestDrawingBufferTimeType)

• N/A

• N/A

• Type:Void
• Description:N/A

• extentsToRefresh
  • Type:IEnumerable<RectangleShape>
  • Description:N/A

• bufferTime
  • Type:TimeSpan
  • Description:N/A

• bufferTimeType
  • Type:RequestDrawingBufferTimeType
  • Description:N/A

GetThreadSafetyLevel()

• N/A

• N/A

• Type:ThreadSafetyLevel
• Description:N/A

CloneDeep()

• N/A

• N/A

• Type:Layer
• Description:N/A

Open()

• N/A

• N/A

• Type:Void
• Description:N/A

Close()

• N/A

• N/A

• Type:Void
• Description:N/A

GetBoundingBox()

• N/A

• N/A

• Type:RectangleShape
• Description:N/A

Draw(GeoCanvas,Collection<SimpleCandidate>)

• N/A

• N/A

• Type:Void
• Description:N/A

• canvas
  • Type:GeoCanvas
  • Description:N/A

• labelsInAllLayers
  • Type:Collection<SimpleCandidate>
  • Description:N/A

ToString()

• N/A

• N/A

• Type:String
• Description:N/A

Equals(Object)

• N/A

• N/A

• Type:Boolean
• Description:N/A

• obj
  • Type:Object
  • Description:N/A

GetHashCode()

• N/A

• N/A

• Type:Int32
• Description:N/A

GetType()

• N/A

• N/A

• Type:Type
• Description:N/A

OpenCore()

• This method opens the Layer so that it is initialized and ready to use.

• This abstract method is called from the concrete public method Open. The open method plays an important role, as it is responsible for initializing the Layer. Most methods on the Layer will throw an exception if the state of the Layer is not opened. When the map draws each layer, the layer will be opened as one of its first steps; then, after it is finished drawing with that layer, it will close it. In this way, we are sure to release all resources used by the Layer. When implementing the abstract method, consider opening the FeatureSource or RasterSource. You will get a chance to close these in the Close method of the Layer.

• Type:Void
• Description:None

CloseCore()

• This method closes the Layer and releases any resources it was using.

• This abstract method is called from the concrete public method Close. The close method plays an important role in the life cycle of the Layer. It may be called after drawing to release any memory and other resources that were allocated since the Open method was called. If you override this method, it is recommended that you take the following things into account: This method may be called multiple times, so we suggest you write the method so that that a call to a closed Layer is ignored and does not generate an error. We also suggest that in the Close you free all resources that have been opened. Remember that the object will not be destroyed, but will be re-opened possibly in the near future.

• Type:Void
• Description:None

DrawCore(GeoCanvas,Collection<SimpleCandidate>)

• This method draws the Layer.

• This method is the concrete wrapper for the abstract method DrawCore. This method draws the representation of the layer based on the extent you provided. When implementing this abstract method, consider each feature and its column data values. You can use the full power of the GeoCanvas to do the drawing. If you need column data for a feature, be sure to override the GetRequiredColumnNamesCore and add the columns you need to the collection. In many of the styles, we add properties that allow the user to specify which field they need; then, in the GetRequiredColumnNamesCore, we read that property and add it to the collection.

• Type:Void
• Description:None

• canvas
  • Type:GeoCanvas
  • Description:This parameter is the canvas object or a GeoImage to draw on.

• labelsInAllLayers
  • Type:Collection<SimpleCandidate>
  • Description:This parameter represents the labels used for collision detection and duplication checking.

OnRequestedDrawing(RequestedDrawingLayerEventArgs)

• N/A

• N/A

• Type:Void
• Description:N/A

• eventArgs
  • Type:RequestedDrawingLayerEventArgs
  • Description:N/A

OnRequestingDrawing(RequestingDrawingLayerEventArgs)

• N/A

• N/A

• Type:Void
• Description:N/A

• eventArgs
  • Type:RequestingDrawingLayerEventArgs
  • Description:N/A

GetThreadSafetyLevelCore()

• N/A

• N/A

• Type:ThreadSafetyLevel
• Description:N/A

CloneDeepCore()

• N/A

• N/A

• Type:Layer
• Description:N/A

GetBoundingBoxCore()

• N/A

• N/A

• Type:RectangleShape
• Description:N/A

DrawException(GeoCanvas,Exception)

• N/A

• N/A

• Type:Void
• Description:N/A

• canvas
  • Type:GeoCanvas
  • Description:N/A

• e
  • Type:Exception
  • Description:N/A

DrawExceptionCore(GeoCanvas,Exception)

• N/A

• N/A

• Type:Void
• Description:N/A

• canvas
  • Type:GeoCanvas
  • Description:N/A

• e
  • Type:Exception
  • Description:N/A

OnDrawingException(DrawingExceptionLayerEventArgs)

• N/A

• N/A

• Type:Void
• Description:N/A

• e
  • Type:DrawingExceptionLayerEventArgs
  • Description:N/A

OnDrawnException(DrawnExceptionLayerEventArgs)

• N/A

• N/A

• Type:Void
• Description:N/A

• e
  • Type:DrawnExceptionLayerEventArgs
  • Description:N/A

DrawAttributionCore(GeoCanvas,String)

• N/A

• N/A

• Type:Void
• Description:N/A

• canvas
  • Type:GeoCanvas
  • Description:N/A

• attribution
  • Type:String
  • Description:N/A

OnDrawingAttribution(DrawingAttributionLayerEventArgs)

• N/A

• N/A

• Type:Void
• Description:N/A

• args
  • Type:DrawingAttributionLayerEventArgs
  • Description:N/A

OnDrawnAttribution(DrawnAttributionLayerEventArgs)

• N/A

• N/A

• Type:Void
• Description:N/A

• args
  • Type:DrawnAttributionLayerEventArgs
  • Description:N/A

OnDrawingProgressChanged(DrawingProgressChangedEventArgs)

• N/A

• N/A

• Type:Void
• Description:N/A

• e
  • Type:DrawingProgressChangedEventArgs
  • Description:N/A

Finalize()

• N/A

• N/A

• Type:Void
• Description:N/A

MemberwiseClone()

• N/A

• N/A

• Type:Object
• Description:N/A

FeatureSource

This property gets the FeatureSource for the HeatLayer.

The FeatureSource is the provider of data to the HeatLayer. There are different FeatureSource classes to match the various ways that feature data is stored. It is important that, when you inherit from the HeatLayer, in the constructor you set the FeatureSource you want to use.

• Type:FeatureSource

HeatStyle

Gets or sets the style of HeatLayer.

If this property is not set, it will use the default HeatStyle.

• Type:HeatStyle

UpperScale

Specifies the upper threshold of the layer.

The HeatLayer only displays when the currentScale is less than or equal to UpperScale and greater than or equal to LowerScale, otherwise it won't show anything.

• Type:Double

LowerScale

Specifies the lower threshold of the layer.

The HeatLayer only displays when the currentScale is less than or equal to UpperScale and greater than or equal to LowerScale, otherwise it won't show anything.

• Type:Double

RequestDrawingInterval

N/A

N/A

• Type:TimeSpan

IsOpen

N/A

N/A

• Type:Boolean

HasBoundingBox

N/A

N/A

• Type:Boolean

DrawingTime

N/A

N/A

• Type:TimeSpan

Name

N/A

N/A

• Type:String

Attribution

N/A

N/A

• Type:String

IsVisible

N/A

N/A

• Type:Boolean

Transparency

N/A

N/A

• Type:Single

BlueTranslation

N/A

N/A

• Type:Single

RedTranslation

N/A

N/A

• Type:Single

GreenTranslation

N/A

N/A

• Type:Single

KeyColors

N/A

N/A

• Type:Collection<GeoColor>

IsNegative

N/A

N/A

• Type:Boolean

IsGrayscale

N/A

N/A

• Type:Boolean

DrawingExceptionMode

N/A

N/A

• Type:DrawingExceptionMode

IsOpenCore

N/A

N/A

• Type:Boolean

RequestedDrawing N/A

N/A

Event Arguments:RequestedDrawingLayerEventArgs

RequestingDrawing N/A

N/A

Event Arguments:RequestingDrawingLayerEventArgs

DrawingProgressChanged N/A

N/A

Event Arguments:DrawingProgressChangedEventArgs

DrawingException N/A

N/A

Event Arguments:DrawingExceptionLayerEventArgs

DrawnException N/A

N/A

Event Arguments:DrawnExceptionLayerEventArgs

DrawingAttribution N/A

N/A

Event Arguments:DrawingAttributionLayerEventArgs

DrawnAttribution N/A

N/A

Event Arguments:DrawnAttributionLayerEventArgs