topic Re: Legend for Raster in ArcGIS JavaScript Maps SDK Questions

Legend for Raster

StephenFricke — Tue, 21 Jan 2014 16:50:12 GMT

Hello, I published a raster dataset as a map service. I then want to be able to use this raster in a mobile app, and view it's legend. When I try to view it's legend, I just get a box that says no legend. I am basing my script off of this esri example:

http://developers.arcgis.com/en/javascript/samples/mobile_soilmap/

Instead of using the soil survey as the layer to create the legend, I am trying to use a raster of temperature data. When I look at the capabilities of this map service in the ArcGIS server manager, you can not seem to allow feature access, which I think might be the problem. Could anyone let me know how I can create a legend for my raster in this situation? Thanks!

Re: Legend for Raster

Noah-Sager — Tue, 21 Jan 2014 20:52:10 GMT

Hi Peter,

Not sure exactly, but one good thing to check would be the Legend in the Map Service at REST.

The soil survey sample you indicated has a legend that is visible at REST. Is this the same for your raster dataset?

-Noah

Re: Legend for Raster

StephenFricke — Tue, 21 Jan 2014 21:00:55 GMT

Hi Peter,

Not sure exactly, but one good thing to check would be the Legend in the Map Service at REST.

The soil survey sample you indicated has a legend that is visible at REST. Is this the same for your raster dataset?

-Noah

Hey Noah,

Thanks for the reply. Yes, I am able to view the legend at REST.

Re: Legend for Raster

Noah-Sager — Tue, 21 Jan 2014 21:03:31 GMT

Alright then. And what happens if you swap in your service into a different sample, like the Legend sample?

Can you see the Legend now?

Re: Legend for Raster

StephenFricke — Tue, 21 Jan 2014 22:04:40 GMT

Alright then. And what happens if you swap in your service into a different sample, like the Legend sample?

Can you see the Legend now?

I swapped out both waterbodies and rivers with my raster, and nothing appears in the legend. I think it has something to do with it being a raster dataset, and not a polygon...

Re: Legend for Raster

Noah-Sager — Tue, 21 Jan 2014 22:36:58 GMT

Hmm, is the URL of the raster dataset publicy accessible?

Looking at the Geoprocessing with result map service sample, it looks like raster data can be included in a legend.

Re: Legend for Raster

StephenFricke — Wed, 22 Jan 2014 17:39:49 GMT

Hmm, is the URL of the raster dataset publicy accessible?

Looking at the Geoprocessing with result map service sample, it looks like raster data can be included in a legend.

Thanks for your help Noah. I figured out that I was needing to define the raster as a ArcGISDynamicServiceLayer instead of a FeatureLayer.

Re: Legend for Raster

Noah-Sager — Wed, 22 Jan 2014 17:41:23 GMT

No worries, glad to you got it figured out!