JavaScript

通用配置集

https://developers.arcgis.com/downloads/#javascript

Front字体—MIME类型

  1. .pbf  application/octet-stream    
  2. .ttf    application/octet-stream    
  3. .wasm    application/wasm   
  4. .woff    application/font-woff    
  5. .woff2   application/font-woff2    
  6. .wsv    application/octet-stream
  8. https://static.arcgis.com/fonts/arial-unicode-ms-regular/65280-65535.pbf
  10. esriConfig.fontsUrl = "http://127.0.0.1/arcgis_js_api/arial-unicode-ms-regular";

4.x

esri

Basemap

AMD：require([“esri/Basemap”], (Basemap) => { / code goes here / });
ESM：import Basemap from “@arcgis/core/Basemap”;
数据源类型：tiled services

服务来源：PortalItem 的 basemap ID（内置）、地图服务

  1. var basemap = new Basemap({
  2.   portalItem: {
  3.     id: "8dda0e7b5e2d4fafa80132d59122268c"  // WGS84 Streets Vector webmap
  4.   },//引入Portal发布的服务
  6.   baseLayers: [
  7.     new WebTileLayer({
  8.       url: "url to your dynamic MapServer",
  9.       title: "Basemap"
  10.     });
  11.   ],
  12.   referenceLayers: [
  13.     new WebTileLayer(...);
  14.   ],
  15. });

esri/tasks/GeometryService esri/tasks/support/AreasAndLengthsParameters 计算图形

Query查询

初始化

  1. var spatialRef = new SpatialReference({
  2.         wkid: view.spatialReference,
  3. });

3.x

ArcObject 10.x

获取图形节点

  1. geometry.GeometryType == esriGeometryType.esriGeometryPolyline;
  2. geometry.GeometryType == esriGeometryType.esriGeometryPolygon;
  3. IGeometryCollection geoCol = (IGeometryCollection)geometry;
  4. int geomsize = geoCol.GeometryCount;
  5. for (int lgeom = 0; lgeom < geomsize; lgeom++)
  6. {
  7.     //从GeometryCollection得到SegmentCollection
  8.     ISegmentCollection segCol = (ISegmentCollection)geoCol.get_Geometry(lgeom);
  9.      IPath path = (IPath)geoCol.get_Geometry(lgeom);
  10.     endPointCol.Add(path.FromPoint); //得到首尾节点
  11.     endPointCol.Add(path.ToPoint);
  12.     int segsize = segCol.SegmentCount;
  13.     for (int lseg = 0; lseg < segsize; lseg++)
  14.     {
  15.         ISegment segment = segCol.get_Segment(lseg);   //从SegmentCollection得到Segment
  16.         screenDisplay.StartDrawing(screenDisplay.hDC, (short)esriScreenCache.esriNoScreenCache);
  17.         screenDisplay.SetSymbol((ISymbol)vertexMarkerSymbol);
  18.         screenDisplay.DrawPoint(segment.FromPoint);        //重画Segment的端点
  19.         screenDisplay.DrawPoint(segment.ToPoint);
  20.         screenDisplay.FinishDrawing();
  21.      }
  22. }

释放资源

Marshal.ReleaseComObject

去除Z值

IZAware pZAware = pGeometry as IZAware;
pZAware.ZAware = false;

GP工具

  1. Geoprocessor gp = new Geoprocessor();
  2. gp.OverwriteOutput = true;
  3. //筛选
  4. IFeatureClass ofc;
  5. IQueryFilter oqf;
  6. MakeFeatureLayer makeLayer = new MakeFeatureLayer();
  7. makeLayer.in_features = graphicClass;
  8. object outLayer = "out_layer";
  9. makeLayer.out_layer = outLayer;
  10. makeLayer.where_clause = "PID = '" + Pid + "'";
  11. IGeoProcessorResult pResult = (IGeoProcessorResult)gp.Execute(makeLayer, null);
  12. IGPUtilities gpUtils = new GPUtilitiesClass();
  13. gpUtils.DecodeFeatureLayer(pResult.GetOutput(0), out ofc, out oqf);
  14. //裁剪
  15. ESRI.ArcGIS.AnalysisTools.Clip pClip2018 = new ESRI.ArcGIS.AnalysisTools.Clip();
  16. pClip2018.in_features = dL2018Class as object;
  17. pClip2018.clip_features = outLayer;
  18. object outLayer2018 = Gdb + "\\DL_XJ" + DateTime.Now.ToString("yyyyMMddHHmmss");
  19. pClip2018.out_feature_class = outLayer2018;
  20. pResult= new GeoProcessorResultClass();
  21. pResult = (IGeoProcessorResult)gp.Execute(pClip2018, null);
  22. IFeatureClass outFeatureClass = gp.Open(pResult.ReturnValue) as IFeatureClass;
  23. //相交
  24. Intersect pIntersect = new Intersect();
  25. IGpValueTableObject gpValueTableObject = new GpValueTableObjectClass();
  26. gpValueTableObject.SetColumns(2);
  27. object inputfeature = dL2018Class;
  28. object obj = outLayer;
  29. gpValueTableObject.AddRow(ref obj);
  30. gpValueTableObject.AddRow(ref inputfeature);
  31. pIntersect.in_features = gpValueTableObject;
  32. object outLayer_Intersect = Gdb + "\\DL_XJ" + DateTime.Now.ToString("yyyyMMddHHmmss");
  33. pIntersect.out_feature_class = outLayer_Intersect;
  34. pIntersect.join_attributes = "All";
  35. pResult = new GeoProcessorResultClass();
  36. pResult = (IGeoProcessorResult)gp.Execute(pIntersect, null);
  37. IFeatureClass outFeatureClass = gp.Open(pResult.ReturnValue) as IFeatureClass;

负面积处理

  1. public static void RepairGeometry(ref IGeometry geometry)
  2.         {
  3.             switch (geometry.GeometryType)
  4.             {
  5.                 case esriGeometryType.esriGeometryPolygon:
  6.                     if (GeometryService.DirectionIsIncorrect(geometry))
  7.                     {
  8.                         IPolygon polygon = geometry as IPolygon;
  9.                         if (polygon != null)
  10.                         {
  11.                             IGeometryCollection pGeoCollection = new PolygonClass();
  12.                             pGeoCollection = polygon as IGeometryCollection;
  13.                             if (pGeoCollection.GeometryCount > 1)
  14.                             {
  15.                                 IGeometryCollection pGeoCollection2 = new PolygonClass();
  16.                                 object o = Type.Missing;
  17.                                 // 遍历Ring集合
  18.                                 for (int i = 0; i < pGeoCollection.GeometryCount; i++)
  19.                                 {
  20.                                     // 向Polygon对象中添加Ring子对象
  21.                                     pGeoCollection2.AddGeometry(pGeoCollection.get_Geometry(i) as IGeometry, ref o, ref o);
  22.                                 }
  23.                                 // QI至ITopologicalOperator ==> 确保添加子对象后的Polygon对象是有效的
  24.                                 ITopologicalOperator pTopological = pGeoCollection2 as ITopologicalOperator;
  25.                                 // 执行Simplify操作 ，防止出现子对象覆盖现象
  26.                                 pTopological.Simplify();
  27.                                 geometry = pGeoCollection2 as IPolygon;
  28.                             }
  29.                             else
  30.                             {
  31.                                 polygon.ReverseOrientation();
  32.                             }
  34.                         }
  35.                     }
  36.                     break;
  37.                 case esriGeometryType.esriGeometryPolyline:
  38.                     IPolyline pl = geometry as IPolyline;
  39.                     pl.ReverseOrientation();
  40.                     break;
  41.                 default:
  42.                     break;
  43.             }
  44.         }

图形绘制方向有错

  1. public static bool DirectionIsIncorrect(IGeometry geometry)
  2.         {
  3.             if (geometry == null)
  4.             {
  5.                 return false;
  6.             }
  7.             if (geometry.IsEmpty)
  8.             {
  9.                 return false;
  10.             }
  11.             if (geometry is IPolygon)
  12.             {
  13.                 IArea area = geometry as IArea;
  14.                 return (area.Area < 0.0);
  15.             }
  16.             return ((geometry is IPolyline) && (((IPolyline)geometry).Length < 0.0));
  17.         }