ArcGISWindowsPhoneSDK.SumClusterer.OnCreateGraphic C# (CSharp) Метод

        protected override Graphic OnCreateGraphic(GraphicCollection cluster, MapPoint point, int maxClusterCount)
        {
            if (cluster.Count == 1) return cluster[0];
            Graphic graphic = null;

            double sum = 0;

            foreach (Graphic g in cluster)
            {
                if (g.Attributes.ContainsKey(AggregateColumn))
                {
                    try
                    {
                        sum += Convert.ToDouble(g.Attributes[AggregateColumn]);
                    }
                    catch { }
                }
            }
            double size = (sum + 450) / 30;
            size = (Math.Log(sum * SymbolScale / 10) * 10 + 20);
            if (size < 12) size = 12;
            graphic = new Graphic() { Symbol = new ClusterSymbol() { Size = size }, Geometry = point };
            graphic.Attributes.Add("Count", sum);
            graphic.Attributes.Add("Size", size);
            graphic.Attributes.Add("Color", InterpolateColor(size - 12, 100));
            return graphic;
        }