topic Map Co-ordinate System - avoiding Web Mercator in ArcGIS Viewer for Flex Questions

Map Co-ordinate System - avoiding Web Mercator

JanetRogers — Tue, 19 Jul 2011 06:35:52 GMT

If I am using ArcGIS Online basemaps in my Flex Viewer, is there any way I can avoid the co-ordinate system being in Web Mercator?

I have tried adding a WKID to the map configuration file and added another basemap in the correct co-ordinate system as the first basemap, but nothing seems to change the display of Web Mercator in the scale bar or in the Co-ordinate Menu.

Re: Map Co-ordinate System - avoiding Web Mercator

RobertScheitlin__GISP — Tue, 19 Jul 2011 10:56:17 GMT

Janet,

The simple answer is no... As the ArcGIS online Basemaps are cached which means you are just getting back pre-made images of the map, they will not be re-projected to meet your needs. If you have ever re-projected a image in ArcMap than you will realize the re-projecting many images that consist of the cache view is now feasible.

Re: Map Co-ordinate System - avoiding Web Mercator

JanetRogers — Tue, 19 Jul 2011 22:02:19 GMT

Thanks for your answer Robert, I won't try any further...

And thank you so much for your Flex Widgets - I have been busy putting them into my web map and they are fantastic. You name comes up every time I find something useful!

Re: Map Co-ordinate System - avoiding Web Mercator

NathanEnge — Sat, 11 Dec 2021 22:20:23 GMT

If you are going to be using Web Mercator basemaps, but you want to show the coords in the lat long, you can do this in the coordinate widget .xml

 
<?xml version="1.0" ?>
<configuration>
    <!-- geo, dms, mercator -->
    <outputunit>geo</outputunit>
</configuration>

Re: Map Co-ordinate System - avoiding Web Mercator

JanetRogers — Fri, 12 Aug 2011 00:25:01 GMT

That worked! A belated thanks to you all.

Re: Map Co-ordinate System - avoiding Web Mercator

KathrynPollard — Mon, 14 Jan 2019 15:12:20 GMT

I would like to display coords in OSGB36 - do you have a widget for that possibly, please?