topic Re: Zoom to selected features, when one record returned it does not zoom to the graph in ArcGIS API for Flex Questions

Zoom to selected features, when one record returned it does not zoom to the graphic

ionarawilson1 — Fri, 17 Aug 2012 13:04:08 GMT

Hi

Can anybody tell me why if I have just one record returned in the query, the map extent does not go to the graphics extent (most of the time when I have just one record returned)? Here is the code snippet

for each(var graphic : Graphic in featureSet.features)       {                graphic.symbol = resultsSymbol;        graphic.addEventListener(MouseEvent.MOUSE_OVER, onMouseOver);        graphic.addEventListener(MouseEvent.MOUSE_OUT, onMouseOut);        if (graphic.attributes.Homepage !== " " || graphic.attributes.Email !==" ")        {        graphic.addEventListener(MouseEvent.CLICK, clickongraphic)        }                myGraphicslayer.add(graphic);                           }                             var graphicsExtent:Extent = GraphicUtil.getGraphicsExtent(featureSet.features);       if (graphicsExtent)       {                        //IT STOPS WORKING AFTER A FEW  QUERIES!!!!        myMap.extent = graphicsExtent.expand(1.3); //zoom out a little               if (!myMap.extent.contains(graphicsExtent))        {         myMap.level--;        }

I also tried this other code with no success:

   var graphicProvider:ArrayCollection = myGraphicsLayer.graphicProvider as ArrayCollection;                     var graphicsExtent:Extent = GraphicUtil.getGraphicsExtent(graphicProvider.toArray());                     map.extent = graphicsExtent.expand(1.1); // zoom out a little                 }

Re: Zoom to selected features, when one record returned it does not zoom to the graph

KenBuja — Fri, 17 Aug 2012 13:21:57 GMT

Are you zooming to points? If so, take a look at this thread

Re: Zoom to selected features, when one record returned it does not zoom to the graph

ionarawilson1 — Fri, 10 Dec 2021 23:28:17 GMT

Thank you so much. That worked

I used

   if (featureSet.features.length == 1)
      {
      
       for each(var graphic2 : Graphic in featureSet.features)
       
       {var mapPoint:MapPoint = MapPoint(graphic2.geometry);
      
       myMap.centerAt(mapPoint);
       myMap.scale = 4500;
       }

      
      }

But I am wondering if it is just one point, would I have a better way to access that one point instead of creating a loop
using for each(var graphic2 : Graphic in featureSet.features)

Re: Zoom to selected features, when one record returned it does not zoom to the graph

AnthonyGiles — Fri, 17 Aug 2012 14:11:39 GMT

ionara,

Yes as you are already doing a check for a single feature you do not need to have the for loop.

Just access the geometry of the single feature directly should be something like featureSet.features[0].geometry

Regards

Anthony

Re: Zoom to selected features, when one record returned it does not zoom to the graph

ionarawilson1 — Mon, 20 Aug 2012 18:11:00 GMT

Thank you Anthony! U guys are awesome!