topic Re: Arcade popup - return value of ground height (eg "Terrain 3D" layer) from any point layer in ArcGIS Online Questions

Arcade popup - return value of ground height (eg "Terrain 3D" layer) from any point layer

JoeNunn — Mon, 10 Aug 2020 09:17:10 GMT

Is there a way to return the value of ground height in the popup of a point layer? Only the x,y coordinates are known in the point layer (2D) but from this we should be able to get the value from the ESRI "terrain 3D" value?

I would like this to be available in both a Map Viewer and a Scene Viewer

thanks

Re: Arcade popup - return value of ground height (eg "Terrain 3D" layer) from any point layer

XanderBakker — Mon, 10 Aug 2020 19:09:29 GMT

Hi Joe Nunn ,

As far as I know this is not possible yet. I have heard that performing a REST call will be possible in the feature. With this you will be able to request the elevation for any point.

To give you an example of how I assume this will look, see below a URL to query the NED30m global elevation service:

https://elevation.arcgis.com/arcgis/rest/services/NED30m/ImageServer/identify?geometry=%7B%22x%22+%3A+-118.15%2C+%22y%22+%3A+33.80%2C+%22spatialReference%22+%3A+%7B%22wkid%22+%3A+4326%7D%7D&geometryType=esriGeometryPoint&mosaicRule=&renderingRule=&pixelSize=&time=&returnGeometry=false&returnCatalogItems=false&f=json

If you look at the page using the HTML format (change last parameter of URL), you will see this:

The resulting json can be used to unpack the value you are interested in (in this case the value "17.2376")

Re: Arcade popup - return value of ground height (eg "Terrain 3D" layer) from any point layer

JoeNunn — Tue, 11 Aug 2020 08:38:27 GMT

Hi Xander - going a step forward is there a way of using a similar REST call in arcade in a popup in AGOL?

I had read that arcade can reference other layers: Pump up Your Pop-ups With Arcade FeatureSets and the Living Atlas

So imagine you could do something similar using a Terrain raster layer as well?

Thanks

Joe

Re: Arcade popup - return value of ground height (eg "Terrain 3D" layer) from any point layer

XanderBakker — Tue, 11 Aug 2020 13:25:24 GMT

Hi joe.nunn@landuse.co.uk ,

Unfortunately, terrain layer, imagery layer, tiled layers are all not supported at this time. You can use content from the living atlas, but they will have to be feature layers.

Re: Arcade popup - return value of ground height (eg "Terrain 3D" layer) from any point layer

JoeNunn — Tue, 11 Aug 2020 15:28:02 GMT

Thanks Xander - thats a shame there isn't a way to use those yet. I know if done outside of AGOL it would be an easy task i would think. Have done something similar in google maps api years ago that returns the elevation at a location.

Re: Arcade popup - return value of ground height (eg "Terrain 3D" layer) from any point layer

XanderBakker — Tue, 11 Aug 2020 15:36:12 GMT

Hi Joe Nunn ,

I agree that being able to do analysis in Arcade using raster layers would be pretty cool and being able to do REST calls from Arcade will also help a lot to accomplish certain workflows. Could you create an idea for this: https://community.esri.com/community/arcgis-ideas (please post back when you do).

I would certainly give my vote to this!

Re: Arcade popup - return value of ground height (eg "Terrain 3D" layer) from any point layer

JoeNunn — Tue, 22 Jun 2021 08:41:39 GMT

Added:

https://community.esri.com/ideas/18886

Re: Arcade popup - return value of ground height (eg "Terrain 3D" layer) from any point layer

XanderBakker — Tue, 11 Aug 2020 16:11:09 GMT

Hi joe.nunn@landuse.co.uk ,

Remember to vote your own idea up. I just voted.