nav[aria-label="Primary Navigation"] { padding: 0; & ul { list-style: none; width: 100%; display: flex; flex-direction: row; justify-content: start; align-items: start; gap: 30px; padding: 0; & li { margin: 0; } & ul li { list-style: none; } } }

Zoom to a single point!

PaulTHEDUDELang

Get a query to zoom to a single point?
I have multiple points and polygon working, but not single point.

Finde mehr Beiträge mit dem Tag

Accepted answers

All comments

PaulTHEDUDELang

This is what I went with, thanks to you both for your help!

private function addressQuery():void
        {
         graphicsLayerAddress.clear();
         queryTaskAdd.execute(queryAdd, new AsyncResponder( onResult, onFault));

            function onResult(featureSet:FeatureSet, token:Object = null):void
            {

             if (featureSet.features.length == 0)
                {
                 Alert.show("Please try again.");
                }
                else
                {
              for each (var GraphicAddress:Graphic in featureSet.features)
              {
               GraphicAddress.toolTip = "High School: " + GraphicAddress.attributes.DISTHIGH + "\n" + "Middle School: "
               + GraphicAddress.attributes.DISTMIDDLE + "\n" + "Elementary School: " + GraphicAddress.attributes.DISTELEMEN + "\n" +
               "Police District: " + GraphicAddress.attributes.PoliceDistricts + "\n" +
               "Fire District: " + GraphicAddress.attributes.FireDistrict + "\n" +
               "EMS Rescue: " + GraphicAddress.attributes.EMSRESCUE + "\n" +
               "EMS Gems: " + GraphicAddress.attributes.EMSGEMS;

              }
              var graphicsExtent:Extent = GraphicUtil.getGraphicsExtent(featureSet.features);
              if (featureSet.features.length == 1)
              {
               var gra:Graphic = GraphicAddress;
      var pt:MapPoint = null;
      pt = gra.geometry as MapPoint;
      MainMap.scale = 1200;
      MainMap.centerAt(pt);
              }
              else
                    {
                        MainMap.extent = graphicsExtent;
                    }
     dpFlat.push(dataGridAddress.dataProvider.toString());
             }
            }

            function onFault(info:Object, token:Object = null):void
            {
                Alert.show(info.toString());
            }
        }

Center and scale works well, but I use this function after determining it's a single point.
You could also have it check geometry type in the function to be safe if you want.

public static function getMapPointExtent(geometry:Geometry):Extent {
 if (geometry) {
  var mapPoint:MapPoint = geometry as MapPoint;
  return new Extent(mapPoint.x, mapPoint.y, mapPoint.x, mapPoint.y, mapPoint.spatialReference);
 }
 else
  return new Extent();
}

RobertScheitlin__GISP

Paul,

The way ESRI handles it in their viewer is to set the maps scale to some predetermined value and center the maps extent on the MapPoint.

Nimm an der Unterhaltung teil

Angemeldete Mitglieder können Beiträge verfassen, Updates folgen und mehr. Neu hier? Registriere ein kostenloses Konto.

Schnellzugriffe

Community Help
Find useful guides, FAQs, and documents to help you navigate and make the most of Esri Community.