topic Re: Can you Mask an Image Service in a Flex App in ArcGIS Viewer for Flex Questions

Can you Mask an Image Service in a Flex App

NicholasMcNamara — Fri, 26 Apr 2013 15:27:49 GMT

I have a basemap service that covers two towns. I have a few flex apps. One of the apps I want to be geographically restricted to only 1 of those towns. I have boundary layers to delineate the towns. Without creating a new basemap service, is it possible to mask out the part of the basemap that I don't want seen?

I know there are sublayer definitionqueries to mask out vector layers, so I'd to do something similar with an image layer, but based on a spatial query. I'm running 10.1.1, Flex 3.2.

Re: Can you Mask an Image Service in a Flex App

omega_cancer — Thu, 02 May 2013 17:26:07 GMT

I have a basemap service that covers two towns. I have a few flex apps. One of the apps I want to be geographically restricted to only 1 of those towns. I have boundary layers to delineate the towns. Without creating a new basemap service, is it possible to mask out the part of the basemap that I don't want seen?

I know there are sublayer definitionqueries to mask out vector layers, so I'd to do something similar with an image layer, but based on a spatial query. I'm running 10.1.1, Flex 3.2.

Masking is not required but this solution will work for you.
http://thunderheadxpler.blogspot.com/2009/01/constraining-map-extent.html and http://forums.arcgis.com/threads/19406-How-to-Limit-Flexviewer-to-Pan-only-within-a-fixed-Map-Extent.
You just need to pass in the allowed max extents.

Thanks

Re: Can you Mask an Image Service in a Flex App

NicholasMcNamara — Fri, 03 May 2013 15:06:33 GMT

I'm using the Flex Viewer, I'm not writing any code. Unless there is a widget for this, I'm not sure I can do it then...?

Masking is not required but this solution will work for you.
http://thunderheadxpler.blogspot.com/2009/01/constraining-map-extent.html and http://forums.arcgis.com/threads/19406-How-to-Limit-Flexviewer-to-Pan-only-within-a-fixed-Map-Extent.
You just need to pass in the allowed max extents.

Thanks

Re: Can you Mask an Image Service in a Flex App

GISDev1 — Fri, 03 May 2013 15:28:43 GMT

Is there a reason you don't want to do it the easy way and just place a white polygon above the town you don't want the user to see? You can exclude that service used as the mask from the TOC, legend, etc. where the user will never even know it's there.

Re: Can you Mask an Image Service in a Flex App

NicholasMcNamara — Fri, 03 May 2013 16:55:57 GMT

Create another service just to mask out the image? I guess I could do that. I was just hoping for a cleaner solution, possible with standard configuration. But if that's the only option, I guess I'll use that.

Re: Can you Mask an Image Service in a Flex App

DasaPaddock — Fri, 03 May 2013 18:06:53 GMT

This may be helpful as well:
http://blogs.esri.com/esri/arcgis/2013/05/02/masking-arcgis-online-web-maps/