Viewer for Flex Projection Question...

[GeorgeHaskett]

Hello,

I want to verify something in regards to proper projection use within the Viewer for Flex application.

I have 16 tif files that I am bringing into an .mxd file inorder to establish their symbology, etc.

The files are not in the default web mercator auxillary projection used by the Viewer for Flex app.  They are in NAD 1983 UTM Zone 12N.  Instead of reprojecting them individually into web mercator I have set my data frame to the WGS 1984 Web Mercator projection.  Then published a map service from the mxd.

Does this work properly or will the data be off a bit?
Also, should I be using the WGS 1984 Web Mercator or the WGS 1984 Web Mercator Auxilary Sphere projection?  Whats the difference?
Is it possible to alter the projection setting for the Viewer for Flex?  I am planning to use some of their basemap layers.

I am using ArcGIS 10.1 and Viewer for Flex 3.2.

Thanks,

Haskett

[BjornSvensson · Accepted solution]

Does this work properly or will the data be off a bit?

Should work fine.

Also, should I be using the WGS 1984 Web Mercator or the WGS 1984 Web Mercator Auxilary Sphere projection?

WGS 1984 Web Mercator Auxiliary Sphere.

Is it possible to alter the projection setting for the Viewer for Flex?  I am planning to use some of their basemap layers.

Yes, but your map server needs to support it.  The Flex Viewer will not project any map layers, however, it can ask for map layers in your preferred projection (which your map service(s) will need to support).

[GeorgeHaskett]

Thanks,

One last question for you.

So seeing how we are in a Mashup world now a days, to what if any extend do we need to worry about what other online services are projected in?

For example, say I found a few services I want to pull into a map.  Will the Viewer for Flex project them on the fly or should I make sure I am only using services with similar projections?

Thanks again for your time and assistance,

Haskett