2.1 Legend and Raster Layers

[DanielWalton]

I love the new legend control in 2.1. I am wondering if there is any way to set up symbology for a raster layer in ArcMap so that the service can pick up a symbol for the legend. Is it possible?

Thanks!

[DominiqueBroux]

Yes, it's possible to customize the legend tree on the event 'Legend.refreshed'.

Ryan did it and gave his code here : http://forums.arcgis.com/threads/17674-2.1-LegendItems-Always-Null

[AlexanderAnkrah]

I hope this thread is still active....

I have a couple of map services (created using 9.3.1) and I was trying to use the legend widget referencing the 2.1 JS API. This is however not working right. The container to hold the legend displays "Loading Legend..." then after a few seconds says "no legend to display". This might be a daft question but is the legend widget backward compatible? is anyone else experiencing this?

Any help would be very much appreciated.

Cheers

[DominiqueBroux]

Hi Don,

Looks like you are working with JavaScript API, not with Silverlight.
You might have more chance to get an answer by posting your question on this forum : http://forums.arcgis.com/forums/15-ArcGIS-API-for-JavaScript

[DanielWalton]

Yes, it's possible to customize the legend tree on the event 'Legend.refreshed'.

Ryan did it and gave his code here : http://forums.arcgis.com/threads/17674-2.1-LegendItems-Always-Null

Thanks Dominique. I'm not so much interested in customizing the legend as getting it working with Map Services. I think that my problem is that our services are hosted on an AWS instance running AGS 10 (NOT SP1). There seems to be a problem with the way the legend symbols are served via ArcGis.com. I guess we can wait for SP1 images to show up so we can take advantage of the new legend service.

[DominiqueBroux]

You are right. The legend REST end point is available from AGS 10 SP1.
The fallback mechanism, using arcgis.com legend service, needs a publicaly visible map service.