//创建饼状专题图
public static void CreatePieTheme(System.Web.UI.Page page, int nLayerID, string[] fields)
{
if (page == null)
{
return;
}
// 得到地图服务下的ArcObjects map对象
ESRI.ArcGIS.Server.IServerContext pServerContext = GetServerContext(page);
ESRI.ArcGIS.Carto.IMapServer mapServer = (ESRI.ArcGIS.Carto.IMapServer)pServerContext.ServerObject;
ESRI.ArcGIS.Carto.IMapServerObjects2 mapServerObjects = (ESRI.ArcGIS.Carto.IMapServerObjects2)mapServer;
string mapName = mapServer.DefaultMapName;
ESRI.ArcGIS.Carto.IMap aoMap = mapServerObjects.get_Map(mapName);
ESRI.ArcGIS.Carto.ILayer pLayer = aoMap.get_Layer(nLayerID);//得到图层
ESRI.ArcGIS.Carto.IGeoFeatureLayer pGeoLayer = pLayer as IGeoFeatureLayer;
//设置专题图的属性列表
ESRI.ArcGIS.Carto.IChartRenderer pCharRenderer = pServerContext.CreateObject("esriCarto.ChartRenderer") as IChartRenderer;
ESRI.ArcGIS.Carto.IRendererFields pRenderFields = pCharRenderer as IRendererFields;
foreach (string var in fields)
{
pRenderFields.AddField(var, var);
}
//实例化图表对象并取得元素指定属性的最大值
ESRI.ArcGIS.Display.IPieChartSymbol pPieSym = pServerContext.CreateObject("esriDisplay.PieChartSymbol") as ESRI.ArcGIS.Display.IPieChartSymbol;
ESRI.ArcGIS.Display.IChartSymbol pCharSym = pPieSym as ESRI.ArcGIS.Display.IChartSymbol;
pPieSym.Clockwise = true;
pPieSym.UseOutline = true;
pCharSym.MaxValue = GetStaMaxMin(fields, pGeoLayer)[0];
//设置饼图外围线
ISimpleLineSymbol pOutLine = pServerContext.CreateObject("esriDisplay.SimpleLineSymbol") as ISimpleLineSymbol;
pOutLine.Color = GetRGB(255, 0, 128, pServerContext);
pOutLine.Style = ESRI.ArcGIS.Display.esriSimpleLineStyle.esriSLSSolid;
pOutLine.Width = 1;
pPieSym.Outline = pOutLine;
IMarkerSymbol pMarkSym = pPieSym as IMarkerSymbol;
pMarkSym.Size = 5;
//设置饼状图填充效果
ESRI.ArcGIS.Display.ISymbolArray pSymArr = pPieSym as ISymbolArray;
ISimpleFillSymbol pSimFillSym = pServerContext.CreateObject("esriDisplay.SimpleFillSymbol") as ESRI.ArcGIS.Display.SimpleFillSymbol;
pSimFillSym.Color = GetRGB(128, 128, 128, pServerContext);
pSimFillSym.Outline = pOutLine;
Random randColor = new Random();
for (int i = 0; i < fields.Length; i++)
{
IFillSymbol pFillSym = pServerContext.CreateObject("esriDisplay.SimpleFillSymbol") as IFillSymbol;
pFillSym.Color = GetRGB(randColor.Next(255), randColor.Next(255), randColor.Next(255), pServerContext);
pSymArr.AddSymbol((ISymbol)pFillSym);
}
//设置地图图层背景
pSimFillSym = pServerContext.CreateObject("esriDisplay.SimpleFillSymbol") as ESRI.ArcGIS.Display.SimpleFillSymbol;
pSimFillSym.Color = GetRGB(255, 128, 255, pServerContext);
pCharRenderer.BaseSymbol = pSimFillSym as ISymbol;
//设置饼状图表属性
IPieChartRenderer pPieChartRenderer = pCharRenderer as IPieChartRenderer;
pPieChartRenderer.MinValue = 0.1;
pPieChartRenderer.MinSize = 1;
pPieChartRenderer.FlanneryCompensation = false;
pPieChartRenderer.ProportionalBySum = true;
pPieChartRenderer.ProportionalField = fields[0];
pCharRenderer.ChartSymbol = pPieSym as IChartSymbol;
pCharRenderer.Label = "面积";
//应用饼状专题到指定图层
pCharRenderer.UseOverposter = false;
pCharRenderer.CreateLegend();
pGeoLayer.Renderer = pCharRenderer as IFeatureRenderer;
//刷新地图显示图表及图例
mapServerObjects.RefreshServerObjects();
// Map1.RefreshResource("MapResourceItem0");
pServerContext.ReleaseContext();
}
private byte[] ExportGeoJsonHandler(NameValueCollection boundVariables,
JsonObject operationInput,
string outputFormat,
string requestProperties,
out string responseProperties)
{
responseProperties = null;
bool applyQuery = true;
string retval = "";
string whereClause;
bool found = operationInput.TryGetString("query", out whereClause);
if (!found || string.IsNullOrEmpty(whereClause))
{
//then no definition query
applyQuery = false;
}
long?layerOrdinal;
found = operationInput.TryGetAsLong("layer", out layerOrdinal); //.TryGetString("layer", out parm2Value);
if (!found)
{
throw new ArgumentNullException("layer");
}
string s = "";
ESRI.ArcGIS.Carto.IMapServer mapServer = (ESRI.ArcGIS.Carto.IMapServer)serverObjectHelper.ServerObject;
ESRI.ArcGIS.Carto.IMapServerDataAccess mapServerObjects = (ESRI.ArcGIS.Carto.IMapServerDataAccess)mapServer;
var lyr = mapServerObjects.GetDataSource(mapServer.DefaultMapName, Convert.ToInt32(layerOrdinal));
if (lyr is IFeatureClass)
{
IFeatureClass fclass = (IFeatureClass)lyr;
retval = "{\"shape\": \"" + fclass.ShapeFieldName + "\"}";
IQueryFilter filter = new QueryFilterClass();
filter.set_OutputSpatialReference(fclass.ShapeFieldName, getWGS84());
if (applyQuery)
{
filter.WhereClause = whereClause;
}
IFeatureCursor curs = fclass.Search(filter, false);
//apply extension methods here
try
{
s = curs.ToGeoJson();
Marshal.ReleaseComObject(curs);
}
catch (Exception ex)
{
s = ex.GetBaseException().ToString(); //.StackTrace;
}
retval = s;
}
else
{
throw new Exception("Layer " + layerOrdinal.ToString() + " is not a feature layer.");
}
return(Encoding.UTF8.GetBytes(retval));
}
private byte[] ExportGeoJsonHandler(NameValueCollection boundVariables,
JsonObject operationInput,
string outputFormat,
string requestProperties,
out string responseProperties)
{
responseProperties = "{\"Content-Type\" : \"application/json\"}";;
bool applyQuery = true;
bool useBbox = true;
bool useBboxSR = true;
string retval = "";
string whereClause;
string boxClause;
int bboxSRID = 0;
IPolygon queryGeom = null;
Helpers helper = new Helpers();
bool found = operationInput.TryGetString("query", out whereClause);
if (!found || string.IsNullOrEmpty(whereClause))
{
//then no definition query
applyQuery = false;
}
string ssrid;
found = operationInput.TryGetString("bboxSR", out ssrid);
if (!found || string.IsNullOrEmpty(ssrid))
{
//then no definition query
useBboxSR = false;
}
else
{
int srid;
bool valid = int.TryParse(ssrid, out srid);
if (valid)
{
bboxSRID = srid;
}
else
{
useBboxSR = false;
}
}
found = operationInput.TryGetString("bbox", out boxClause);
if (!found || string.IsNullOrEmpty(boxClause))
{
//then no definition query
useBbox = false;
}
if (useBbox)
{
try
{
double xmin; double ymin; double xmax; double ymax;
string[] vals = boxClause.Split(new char[] { ',' });
if (vals.Length == 4)
{
bool bxmin = double.TryParse(vals[0], out xmin);
bool bymin = double.TryParse(vals[1], out ymin);
bool bxmax = double.TryParse(vals[2], out xmax);
bool bymax = double.TryParse(vals[3], out ymax);
if (bxmin && bymin && bxmax && bymax)
{
ISpatialReference sr = null;
if (useBboxSR)
{
sr = helper.GetSpatialReference(bboxSRID);
if (sr == null)
{
//erroneous srid, ignore bounding box
useBbox = false;
}
}
else
{
sr = helper.getWGS84();
}
if (useBbox)
{
queryGeom = new Polygon() as IPolygon;
IPointCollection coll = queryGeom as IPointCollection;
coll.AddPoint(new Point()
{
X = xmin, Y = ymin, SpatialReference = sr
});
coll.AddPoint(new Point()
{
X = xmin, Y = ymax, SpatialReference = sr
});
coll.AddPoint(new Point()
{
X = xmax, Y = ymax, SpatialReference = sr
});
coll.AddPoint(new Point()
{
X = xmax, Y = ymin, SpatialReference = sr
});
coll.AddPoint(new Point()
{
X = xmin, Y = ymin, SpatialReference = sr
});
queryGeom.SpatialReference = sr;
}
}
else
{
useBbox = false;
}
}
else
{
useBbox = false;
}
}
catch
{
useBbox = false;
}
}
long?layerOrdinal;
found = operationInput.TryGetAsLong("layer", out layerOrdinal); //.TryGetString("layer", out parm2Value);
if (!found)
{
throw new ArgumentNullException("layer");
}
string s = "";
ESRI.ArcGIS.Carto.IMapServer mapServer = (ESRI.ArcGIS.Carto.IMapServer)serverObjectHelper.ServerObject;
ESRI.ArcGIS.Carto.IMapServerDataAccess mapServerObjects = (ESRI.ArcGIS.Carto.IMapServerDataAccess)mapServer;
var lyr = mapServerObjects.GetDataSource(mapServer.DefaultMapName, Convert.ToInt32(layerOrdinal));
if (lyr is IFeatureClass)
{
IFeatureClass fclass = (IFeatureClass)lyr;
retval = "{\"shape\": \"" + fclass.ShapeFieldName + "\"}";
IQueryFilter filter = null;
if (useBbox)
{
IGeoDataset gds = fclass as IGeoDataset;
filter = new SpatialFilterClass();
ISpatialFilter spf = filter as ISpatialFilter;
spf.Geometry = helper.TransformShapeCS(queryGeom, queryGeom.SpatialReference, gds.SpatialReference);
spf.GeometryField = fclass.ShapeFieldName;
spf.SpatialRel = esriSpatialRelEnum.esriSpatialRelIntersects;
}
else
{
filter = new QueryFilterClass();
}
filter.set_OutputSpatialReference(fclass.ShapeFieldName, getWGS84());
if (applyQuery)
{
filter.WhereClause = whereClause;
}
IFeatureCursor curs = fclass.Search(filter, false);
//apply extension methods here
try
{
s = curs.ToGeoJson();
Marshal.ReleaseComObject(curs);
}
catch (Exception ex)
{
s = ex.GetBaseException().ToString(); //.StackTrace;
}
retval = s;
}
else
{
throw new Exception("Layer " + layerOrdinal.ToString() + " is not a feature layer.");
}
return(Encoding.UTF8.GetBytes(retval));
}
//创建柱状专题图
public void CreateBarRenderer(int layerID, string[] fields)
{
// 得到地图服务下的ArcObjects map对象
ESRI.ArcGIS.Server.IServerContext pServerContext = GetServerContext();
ESRI.ArcGIS.Carto.IMapServer mapServer = (ESRI.ArcGIS.Carto.IMapServer)pServerContext.ServerObject;
ESRI.ArcGIS.Carto.IMapServerObjects2 mapServerObjects = (ESRI.ArcGIS.Carto.IMapServerObjects2)mapServer;
string mapName = mapServer.DefaultMapName;
ESRI.ArcGIS.Carto.IMap aoMap = mapServerObjects.get_Map(mapName);
ESRI.ArcGIS.Carto.ILayer pLayer = aoMap.get_Layer(layerID);//得到图层
ESRI.ArcGIS.Carto.IGeoFeatureLayer pGeoLayer = pLayer as IGeoFeatureLayer;
//设置专题图元素的属性名称列表
IChartRenderer pChartRender = pServerContext.CreateObject("esriCarto.ChartRenderer") as IChartRenderer;
IRendererFields pRenderFields = pChartRender as IRendererFields;
foreach (string var in fields)
{
pRenderFields.AddField(var, var);
}
//实例化图表对象并取得元素指定属性的最大值
IBarChartSymbol pBarChartSymbol = pServerContext.CreateObject("esriDisplay.BarChartSymbol") as IBarChartSymbol;
IChartSymbol pChartSymbol = pBarChartSymbol as IChartSymbol;
pChartSymbol.MaxValue = GetStaMaxMin(fields, pGeoLayer)[0];
pBarChartSymbol.Width = 8;
IMarkerSymbol pMarkerSymbol = pBarChartSymbol as IMarkerSymbol;
pMarkerSymbol.Size = 50;
//设置柱状图每列填充效果
ISymbolArray pSymbolArray = pBarChartSymbol as ISymbolArray;
Random ranColor = new Random();
for (int i = 0; i < fields.Length; i++)
{
IFillSymbol pFillSymbol = pServerContext.CreateObject("esriDisplay.SimpleFillSymbol") as IFillSymbol;
pFillSymbol.Color = GetRGB(ranColor.Next(255), ranColor.Next(255), ranColor.Next(255), pServerContext);
pSymbolArray.AddSymbol((ISymbol)pFillSymbol);
}
//设置地图图层背景
ESRI.ArcGIS.Display.ISimpleFillSymbol pFSymbol = pServerContext.CreateObject("esriDisplay.SimpleFillSymbol") as ESRI.ArcGIS.Display.SimpleFillSymbol;
pFSymbol.Color = GetRGB(239, 228, 249, pServerContext);
pChartRender.BaseSymbol = pFSymbol as ISymbol;
//应用柱状专题到指定图层
pChartRender.ChartSymbol = pBarChartSymbol as IChartSymbol;
pChartRender.Label = "Test";
pChartRender.UseOverposter = false;
pChartRender.CreateLegend();
pGeoLayer.Renderer = pChartRender as IFeatureRenderer;
//刷新地图显示图表及图例
mapServerObjects.RefreshServerObjects();
Map1.RefreshResource("MapResourceItem0");
Toc1.BuddyControl = "Map1";
//Toc1.Refresh();
Map1.Refresh();
pServerContext.ReleaseContext();
}
private byte[] ExportCsvHandler(NameValueCollection boundVariables,
JsonObject operationInput,
string outputFormat,
string requestProperties,
out string responseProperties)
{
string retval = "";
StringBuilder sb = new StringBuilder();
string s = "";
bool applyQuery = true;
bool? applyHeader = true;
//bool? applyGeoms = true;
bool addHeader = false;
//bool addGeoms = false;
responseProperties = "{\"Content-Type\" : \"text/csv\"}";
string whereClause = "";
bool found = operationInput.TryGetString("query", out whereClause);
if (!found || string.IsNullOrEmpty(whereClause))
{
//then no definition query
applyQuery = false;
}
long?layerOrdinal;
found = operationInput.TryGetAsLong("layer", out layerOrdinal); //.TryGetString("layer", out parm2Value);
if (!found)
{
throw new ArgumentNullException("layer");
}
bool useHeader = operationInput.TryGetAsBoolean("headers", out applyHeader);
if (useHeader)
{
if ((bool)applyHeader)
{
addHeader = true;
}
}
//bool useGeoms = operationInput.TryGetAsBoolean("addgeoms", out applyGeoms);
//if (useGeoms)
//{
// if ((bool)applyGeoms)
// {
// addGeoms = true;
// }
//}
ESRI.ArcGIS.Carto.IMapServer mapServer = (ESRI.ArcGIS.Carto.IMapServer)serverObjectHelper.ServerObject;
ESRI.ArcGIS.Carto.IMapServerDataAccess mapServerObjects = (ESRI.ArcGIS.Carto.IMapServerDataAccess)mapServer;
var lyr = mapServerObjects.GetDataSource(mapServer.DefaultMapName, Convert.ToInt32(layerOrdinal));
if (lyr is IFeatureClass)
{
IFeatureClass fclass = (IFeatureClass)lyr;
IQueryFilter filter = new QueryFilterClass();
filter.set_OutputSpatialReference(fclass.ShapeFieldName, getWGS84());
if (applyQuery)
{
filter.WhereClause = whereClause;
}
IFeatureCursor curs = fclass.Search(filter, false);
try
{
//();
s = curs.ToCSV(addHeader);
Marshal.ReleaseComObject(curs);
}
catch (Exception ex)
{
s = ex.GetBaseException().ToString(); //.StackTrace;
}
retval = s;
sb.Append(retval);
}
else
{
throw new Exception("Layer " + layerOrdinal.ToString() + " is not a feature layer.");
}
return(Encoding.UTF8.GetBytes(sb.ToString()));
}
