topic Re: changing extent dynamically in ArcGIS Viewer for Flex Questions

changing extent dynamically

SaugatJoshi — Thu, 19 May 2011 18:48:12 GMT

Hi all,

I have 3 buttons in viewer.I have extents for each of these from the database..
Button 1- zooms to football field
button 2- zooms to university building, and
button 3- zooms to nearby police station.
Where can I change the code to achieve something like this in the same map? The initial extent will be the extent from button 1. What about other two extents.

Thank you.

Re: changing extent dynamically

SaugatJoshi — Sat, 11 Dec 2021 07:20:42 GMT

Guys,I think I got it. Below is the code....I have my three extents in a combobox instead of Buttons. Below is the snippet


//changeView is the event listener for combo box's change property

private function changeView(event:Event):void
   {
    var viewExtent:Extent=new Extent(Number(bboxArray[0]), Number(bboxArray[1]), Number(bboxArray[2]), Number(bboxArray[3]), null);
    selectedExtent = viewExtent;
    map.extent=selectedExtent;
    //mx.controls.Alert.show(selectedView);
   }

bboxArray has xmin,ymin,xmax and ymax values respectively which I get from the database.Please don't forget to write if statements depending on you case.

Thanks.

Re: changing extent dynamically

MohdShah — Thu, 21 Jul 2011 02:54:36 GMT

Hello all
I try same code but
got this error

1046: Type was not found or was not a compile-time constant: Extent.

Re: changing extent dynamically

RobertScheitlin__GISP — Thu, 21 Jul 2011 10:40:41 GMT

Mohd,

That is a really BASIC programming concept... You need to import the extent type.

import com.esri.ags.geometry.Extent;