topic InitialExtents Coordinate system in ArcGIS API for Flex Questions

InitialExtents Coordinate system

MattShetzer — Tue, 28 Sep 2010 04:40:57 GMT

The Flex 2.1 Viewer uses the following Initial Extent.

<map initialextent="-14083000 3139000 -10879000 5458000" top="40">

How would you change this to Latitude/Longitude ?

Thanks!

Matt Shetzer

Re: InitialExtents Coordinate system

RobertScheitlin__GISP — Tue, 28 Sep 2010 11:19:33 GMT

Matt,

   I am not sure what you are really after with that question but, if you just change the values to Lat Lon i.e some geographic projection and you are still using the basemaps that come standard in the FlexViewer 2.1 app then you might get undesired results as those basemaps are in Web mercator and not WGS 1984.

   You could be the extent of your area of interest using the Extent Helper and get the web mercator values that you need. http://help.arcgis.com/en/webapps/flexviewer/help/extenthelper/flexviewer_extenthelper.html

   Or you can look into the new WebMercatorExtent object and get your values from code.
http://help.arcgis.com/en/webapi/flex/apiref/com/esri/ags/geometry/WebMercatorExtent.html

Re: InitialExtents Coordinate system

MattShetzer — Tue, 28 Sep 2010 15:20:50 GMT

Extent Helper will do the job !

Thanks for the great solution Robert.

Matt