topic Knowing the polygon id and getting the extent in ArcGIS JavaScript Maps SDK Questions

Knowing the polygon id and getting the extent

PrasannaRaghavendar — Mon, 27 May 2013 05:13:21 GMT

I have a text box where I have the polygon Id like,

"id_of_the_polygon_12345"

. Is it possible to get its extent on the map and zoom into it? I have figured out how to do it upon clicking on the map. But could not figure how to do the same knowing my poly Id.

Re: Knowing the polygon id and getting the extent

VinayBansal — Mon, 27 May 2013 05:18:01 GMT

Could you elaborate more on your functionality, what actually you want to do?.

Re: Knowing the polygon id and getting the extent

PrasannaRaghavendar — Sat, 11 Dec 2021 06:31:37 GMT

I know that I can zoom to a polygon when it is clicked by doing this

identifyParams.geometry = evt.mapPoint;
identifyParams.mapExtent = map.extent;
identifyTask.execute(identifyParams, function(result) { 
     var i;
     var polyId= new Array();
     for(i=0; i<result.length;i++){              
       polyId=result.feature.attributes["UNIQPOLYID"];
     }

But I do not want to do it upon clicking on the map. When the user enters the polygon id in a text box, I want to zoom and show that polygon on the screen.

Re: Knowing the polygon id and getting the extent

VinayBansal — Mon, 27 May 2013 05:33:06 GMT

Means you need to query based on the polygon Id.

For that you need to use query task

You can take input from this sample on how to call query task on layer you want to query

http://help.arcgis.com/en/webapi/javascript/arcgis/jssamples/query_nomap.html

Once you got the results, get the geomtry and zoom to its extents on map.