Renderer, Symbol, GeoRssLayer and Binding question

linusang

Hi,

I'm using a TemporalRenderer for the new GeoRssLayer type, I added a Magnitude Attribute to each Graphic in the GraphicsCollection. Each graphic's size is based upon the Magnitude value using the ClassBreaksRenderer in the TemporalRender... Like this xaml below...

<esri:TemporalRenderer x:Key="EarthquakeRenderer">

 <!--ObservationRenderer-->
        <esri:TemporalRenderer.ObservationRenderer>
            <esri:ClassBreaksRenderer Attribute="Magnitude" >
             <esri:ClassBreakInfo MinimumValue="0" MaximumValue="3.9" Symbol="{StaticResource MySmallMarkerSymbol}" />
             <esri:ClassBreakInfo MinimumValue="4" MaximumValue="6.9" Symbol="{StaticResource MyMediumMarkerSymbol}" />
             <esri:ClassBreakInfo MinimumValue="7" MaximumValue="10" Symbol="{StaticResource MyLargeMarkerSymbol}" />
            </esri:ClassBreaksRenderer>
        </esri:TemporalRenderer.ObservationRenderer>

        <!--SymbolAger-->
        <esri:TemporalRenderer.SymbolAger>
            <esri:RampInterpolator>
                <esri:RampInterpolator.ColorRange>                    
                    <esri:ColorRange From="Yellow" To="Red" />
                </esri:RampInterpolator.ColorRange>
            </esri:RampInterpolator>
        </esri:TemporalRenderer.SymbolAger>
</esri:TemporalRenderer>

Questions:
1) I would like the user to be able to change the size of the Symbols using a slider. How do i bind the Slider's value to the Symbols?
2) The SymbolAger does not work... how can i get this to work?

Thanks

JenniferNery

GraphicsLayer is TimeAware layer. For GeoRssLayer, it's PublishDate will be used as the TimeExtent. I'm not sure if we are using the same layer. I tried to view graphic attributes from this sample http://help.arcgis.com/en/webapi/silverlight/samples/start.htm#GeoRssSimple and found that all graphics have the same PublishDate. This is the reason why the Temporal Renderer did not look like it worked because all of them have the same date.

Jennifer