topic Re: How to convert X/Y to lat/long in ArcGIS API for Flex Questions

How to convert X/Y to lat/long

ShaningYu — Fri, 12 Apr 2013 13:46:10 GMT

For a MapPoint, I get its X/Y coordinate values. How can it be converted into lat/long values? Thanks.

Re: How to convert X/Y to lat/long

AnthonyGiles — Fri, 12 Apr 2013 13:51:32 GMT

Shaning,

It depends what coordinate system your application is in. If you are using web Mercator there is a class, see here:

http://resources.arcgis.com/en/help/flex-api/apiref/index.html?com/esri/ags/utils/WebMercatorUtil.html&com/esri/ags/utils/class-list.html

If you are using anything else you will have to do the math yourself or use your geometry service.

Regards

Anthony

Re: How to convert X/Y to lat/long

Drew — Fri, 12 Apr 2013 17:23:55 GMT

For a MapPoint, I get its X/Y coordinate values. How can it be converted into lat/long values? Thanks.

If you are just looking to convert coordinates as a widget, I made one a little while ago.
You can download it here:
http://www.arcgis.com/home/item.html?id=edd4a2b7c722493a8b08f53eaa131e1e

If anything you can dig through it and use it as a code sample.

Drew

Re: How to convert X/Y to lat/long

RobertBorchert — Fri, 12 Apr 2013 19:03:28 GMT

IF you already have it in ArcMap simply create a new x,y fields (lat long) and use the right click on one of the new columns and select Calculate Geometry.

If you don't have it in ArcMap use the X,Y to create the features and then do the above.

For a MapPoint, I get its X/Y coordinate values. How can it be converted into lat/long values? Thanks.

Re: How to convert X/Y to lat/long

ShaningYu — Fri, 12 Apr 2013 19:42:16 GMT

Using the CoordinateMenu component and revising a couple of functions, I made conversion very well. Thanks.

Re: How to convert X/Y to lat/long

omega_cancer — Sun, 21 Apr 2013 15:51:10 GMT

Call a simple function:

myMP=map.toMapFromStage(X,Y);