FeatureLayer 中的基本查询

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
function queryFeatures(screenPoint) {
  const point = view.toMap(screenPoint);
  layer.queryFeatures({
    //query object
    geometry: point,
    spatialRelationship: "intersects",
    returnGeometry: false,
    outFields: ["*"],
  })
  .then((featureSet) => {
    // set graphic location to mouse pointer and add to mapview
    pointGraphic.geometry = point;
    view.graphics.add(pointGraphic);
    // open popup of query result
    view.popup.open({
      location: point,
      features: featureSet.features
    });
  });
}

1
2
3
4
5
6
7
8
9
layer.queryFeatures({
  geometry: point,
  // distance and units will be null if basic query selected
  distance: 0.5,
  units: "miles",
  spatialRelationship: "intersects",
  returnGeometry: false,
  outFields: ["*"],
})