MapGIS Client for JavaScript API

# new QueryFeauresOptions(options)

参数:

示例

指定图层要素查询使用示例

1.支持的服务类型
  const mapServer = new MapServer({
    url: "http://{ip}:{port}/igs/rest/services/{serverName}/MapServer",
  });
  const featureServer = new FeatureServer({
    url: "http://{ip}:{port}/igs/rest/services/{serverName}/FeatureServer",
  });
  const featureServerV1 = new FeatureServer({
    url: "http://{ip}:{port}/igs/rest/mrfs/docs/{serverName}",
  });
  const featureServerGDBP = new FeatureServer({
    url: "http://{ip}:{port}/igs/rest/mrfs/layer",
  });
  const sceneServer = new SceneServer({
    url: "http://{ip}:{port}/igs/rest/services/{serverName}/SceneServer",
  });
  const resoureServer = new ResourceServer({
    url: "http://{ip}:{port}/igs/rest/services/system/ResourceServer",
  });
  const arcgisMapServer = new ArcGISMapServer({
    url: "http://{ip}:{port}/arcgis/rest/services/{serverName}/MapServer",
  });
  const arcgisFeatureServer = new ArcGISFeatureServer({
    url: "http://{ip}:{port}/arcgis/rest/services/{serverName}/FeatureServer",
  });

  2.调用方法，以要素服务举例(除资源服务外查询但图层要素接口为queryTempDataFeatures，其他服务查询均为queryFeatures)
  2.1 根据要素NAME字段分组统计2011年gdbp总和
  const queryFeauresOptions = {
    layerId: "0",
    // 对于部分服务需要传入gdbp
    // gdbp:"gdbp://MapGISLocalPlus/湖北省/ds/行政区/sfcls/湖北省市级区划",
    outStatistics: [
      {
        statisticType: "FUNCTION_SUM",
        onStatisticField: "GDP2011",
        outStatisticFieldName: "GDP2011_total",
      },
    ],
    groupByFieldsForStatistics: "NAME",
    f: "json",
  }
  featureServer.queryFeatures(queryFeauresOptions)

  2.2 几何过滤
  const queryFeauresOptions = {
    layerId: "0",
    // 对于部分服务需要传入gdbp
    // gdbp:"gdbp://MapGISLocalPlus/湖北省/ds/行政区/sfcls/湖北省市级区划",
    geometry: new Polygon({
      coordinates: [
        [
          [12579102.459639914, 3375646.034919311],
          [12690421.950433187, 3375646.034919311],
          [12690421.950433187, 3492635.98026307],
          [12579102.459639914, 3492635.98026307],
          [12579102.459639914, 3375646.034919311],
        ],
      ],
      spatialReference: "EPSG:3857",
    }),
    geometryPrecision: 3,
    outSrs: new SpatialReference("EPSG:4547"),
  }
  featureServer.queryFeatures(queryFeauresOptions)

  2.3 查询图层要素总数
  const queryFeauresOptions = {
    layerId: "0",
    // 对于部分服务需要传入gdbp
    // gdbp:"gdbp://MapGISLocalPlus/湖北省/ds/行政区/sfcls/湖北省市级区划",
    returnCountOnly:true,
  }
  featureServer.queryFeatures(queryFeauresOptions).then((res)=>{
    // 图层要素总数
    const count = res.data.count
  })

  2.4 返回信息
  const queryFeauresOptions = {
    layerId: "0",
    // 对于部分服务需要传入gdbp
    // gdbp:"gdbp://MapGISLocalPlus/湖北省/ds/行政区/sfcls/湖北省市级区划", 
    resultRecordCount: 10
  }
  featureServer.queryFeatures(queryFeauresOptions).then((res)=>{
    const data = res.data
    // 要素数据集
    const featureSet = data.featureSet
    // 字段名称
    const fields = featureSet.fields
    // 几何类型
    const geometryType = featureSet.geometryType
    // 要素信息 
    const features = featureSet.features
  })