private void UnionButton_Click(object sender, RoutedEventArgs e)
{
UnionButton.IsEnabled = false;
MyDrawObject.IsEnabled = false;
GeometryService geometryService =
new GeometryService("http://tasks.arcgisonline.com/ArcGIS/rest/services/Geometry/GeometryServer");
geometryService.UnionCompleted += GeometryService_UnionCompleted;
geometryService.Failed += GeometryService_Failed;
geometryService.UnionAsync(selectedGraphics);
}
public StatisticsRenderOnMap()
{
InitializeComponent();
subRegionGraphicsLayer = MyMap.Layers["SumGraphicsLayer"] as GraphicsLayer;
// Generate a unique value renderer on the server
GenerateRendererTask generateRendererTask = new GenerateRendererTask();
generateRendererTask.Url = _layerUrl;
generateRendererTask.ExecuteCompleted += (o, e) =>
{
subRegionGraphicsLayer.Renderer = e.GenerateRendererResult.Renderer;
};
UniqueValueDefinition uniqueValueDefinition = new UniqueValueDefinition()
{
Fields = new List <string>()
{
"SUB_REGION"
}
};
uniqueValueDefinition.ColorRamps.Add(new ColorRamp()
{
From = Colors.Purple,
To = Colors.Yellow,
Algorithm = Algorithm.LabLChAlgorithm
});
GenerateRendererParameters rendererParams = new GenerateRendererParameters()
{
ClassificationDefinition = uniqueValueDefinition,
};
generateRendererTask.ExecuteAsync(rendererParams);
// When layers initialized, return all states, generate statistics for a group,
// union graphics based on grouped statistics
MyMap.Layers.LayersInitialized += (a, b) =>
{
QueryTask queryTask1 = new QueryTask(_layerUrl);
Query queryAllStates = new Query()
{
ReturnGeometry = true,
OutSpatialReference = MyMap.SpatialReference,
Where = "1=1"
};
queryAllStates.OutFields.Add("SUB_REGION");
queryTask1.ExecuteCompleted += (c, d) =>
{
// Return statistics for states layer. Population and total count of states grouped by sub-region.
QueryTask queryTask2 = new QueryTask(_layerUrl);
Query query = new Query()
{
GroupByFieldsForStatistics = new List <string> {
"SUB_REGION"
},
OutStatistics = new List <OutStatistic> {
new OutStatistic()
{
OnStatisticField = "POP2000",
OutStatisticFieldName = "SubRegionPopulation",
StatisticType = StatisticType.Sum
},
new OutStatistic()
{
OnStatisticField = "SUB_REGION",
OutStatisticFieldName = "NumberOfStates",
StatisticType = StatisticType.Count
}
}
};
queryTask2.ExecuteCompleted += (e, f) =>
{
// foreach group (sub-region) returned from statistic results
foreach (Graphic regionGraphic in f.FeatureSet.Features)
{
// Collection of graphics based on sub-region
IEnumerable <Graphic> toUnion =
(f.UserState as FeatureSet).Features.Where(stateGraphic =>
(string)stateGraphic.Attributes["SUB_REGION"] ==
(string)regionGraphic.Attributes["SUB_REGION"]);
// Union graphics based on sub-region, add to graphics layer
GeometryService geometryService =
new GeometryService("http://sampleserver6.arcgisonline.com/arcgis/rest/services/Utilities/Geometry/GeometryServer");
geometryService.UnionCompleted += (g, h) =>
{
Graphic unionedGraphic = h.UserState as Graphic;
unionedGraphic.Geometry = h.Result;
subRegionGraphicsLayer.Graphics.Add(unionedGraphic);
};
geometryService.UnionAsync(toUnion.ToList(), regionGraphic);
}
// populate the ListBox
FeatureSet featureSet = f.FeatureSet;
if (featureSet != null && featureSet.Features.Count > 0)
{
OutStatisticsListBox.ItemsSource = featureSet.Features;
}
};
queryTask2.ExecuteAsync(query, d.FeatureSet);
};
queryTask1.ExecuteAsync(queryAllStates);
};
}
public StatisticsRenderOnMap()
{
InitializeComponent();
subRegionGraphicsLayer = MyMap.Layers["SumGraphicsLayer"] as GraphicsLayer;
// Generate a unique value renderer on the server
GenerateRendererTask generateRendererTask = new GenerateRendererTask();
generateRendererTask.Url = _layerUrl;
generateRendererTask.ExecuteCompleted += (o, e) =>
{
subRegionGraphicsLayer.Renderer = e.GenerateRendererResult.Renderer;
};
UniqueValueDefinition uniqueValueDefinition = new UniqueValueDefinition()
{
Fields = new List<string>() { "SUB_REGION" }
};
uniqueValueDefinition.ColorRamps.Add(new ColorRamp()
{
From = Colors.Purple,
To = Colors.Yellow,
Algorithm = Algorithm.LabLChAlgorithm
});
GenerateRendererParameters rendererParams = new GenerateRendererParameters()
{
ClassificationDefinition = uniqueValueDefinition,
};
generateRendererTask.ExecuteAsync(rendererParams);
// When layers initialized, return all states, generate statistics for a group,
// union graphics based on grouped statistics
MyMap.Layers.LayersInitialized += (a, b) =>
{
QueryTask queryTask1 = new QueryTask(_layerUrl);
Query queryAllStates = new Query()
{
ReturnGeometry = true,
OutSpatialReference = MyMap.SpatialReference,
Where = "1=1"
};
queryAllStates.OutFields.Add("SUB_REGION");
queryTask1.ExecuteCompleted += (c, d) =>
{
// Return statistics for states layer. Population and total count of states grouped by sub-region.
QueryTask queryTask2 = new QueryTask(_layerUrl);
Query query = new Query()
{
GroupByFieldsForStatistics = new List<string> { "SUB_REGION" },
OutStatistics = new List<OutStatistic> {
new OutStatistic(){
OnStatisticField = "POP2000",
OutStatisticFieldName = "SubRegionPopulation",
StatisticType = StatisticType.Sum
},
new OutStatistic(){
OnStatisticField = "SUB_REGION",
OutStatisticFieldName = "NumberOfStates",
StatisticType = StatisticType.Count
}
}
};
queryTask2.ExecuteCompleted += (e, f) =>
{
// foreach group (sub-region) returned from statistic results
foreach (Graphic regionGraphic in f.FeatureSet.Features)
{
// Collection of graphics based on sub-region
IEnumerable<Graphic> toUnion =
(f.UserState as FeatureSet).Features.Where(stateGraphic =>
(string)stateGraphic.Attributes["SUB_REGION"] ==
(string)regionGraphic.Attributes["SUB_REGION"]);
// Union graphics based on sub-region, add to graphics layer
GeometryService geometryService =
new GeometryService("http://sampleserver6.arcgisonline.com/arcgis/rest/services/Utilities/Geometry/GeometryServer");
geometryService.UnionCompleted += (g, h) =>
{
Graphic unionedGraphic = h.UserState as Graphic;
unionedGraphic.Geometry = h.Result;
subRegionGraphicsLayer.Graphics.Add(unionedGraphic);
};
geometryService.UnionAsync(toUnion.ToList(), regionGraphic);
}
// populate the ListBox
FeatureSet featureSet = f.FeatureSet;
if (featureSet != null && featureSet.Features.Count > 0)
{
OutStatisticsListBox.ItemsSource = featureSet.Features;
}
};
queryTask2.ExecuteAsync(query, d.FeatureSet);
};
queryTask1.ExecuteAsync(queryAllStates);
};
}
private void UnionButton_Click(object sender, RoutedEventArgs e)
{
UnionButton.IsEnabled = false;
MyDrawObject.IsEnabled = false;
GeometryService geometryService =
new GeometryService("http://tasks.arcgisonline.com/ArcGIS/rest/services/Geometry/GeometryServer");
geometryService.UnionCompleted += GeometryService_UnionCompleted;
geometryService.Failed += GeometryService_Failed;
geometryService.UnionAsync(selectedGraphics);
}
