Exaggeartion surface AGOL web Scene

Question

Hi I am wondering how to exaggerate surface like in ocean Storymap

Standalone webscene has no exaggeration - does anybody know why and how to reproduce this?

Or it is possible only thru StoryMap - but how?

Storymap (Conveyor belt) - exaggeration - https://apl.maps.arcgis.com/apps/MapJournal/index.html?appid=d629dd5cc3fe48ea9fc744dada861da0

SceneApp - no exaggeration - https://www.arcgis.com/home/webscene/viewer.html?webscene=f4a00a9b8b2846a8af9cc45e5742d8d9

I've already asked in Czech Geocommunity and found some threads but with no solution, but in SM is working.

Any advice or idea how to do it? Thanks a lot

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Anonymous User · Answer

Hi Vojtech, you probably need to add a custom elevation source to your web scene.

If you're creating a 3D scene which is gong to show both - elevation above sea level (on land) and below sea level (or underwater - i.e. a river) you might need to have two elevation surfaces.

As far as I can see, the scene in the story map scene is using this:

Bathymetry: https://elevation3d.arcgis.com/arcgis/rest/services/WorldElevation3D/TopoBathy3D/ImageServer

DEM : https://elevation3d.arcgis.com/arcgis/rest/services/WorldElevation3D/Terrain3D/ImageServer

If you want a custom exaggeration applied to the bathymetry surface, you might need to have your own bathymetry surface (unless I missed something and you can now do some basic pixel calculations in a tile layer in AGOL; haven't done this in a while).

In the past, when I was creating web scenes that included underwater areas (i.e. river estuaries and seabed), i was creating a DEM from point bathymetry, then to exaggerate it I was simply using Raster Calculator in Spatial Analyst (i.e. cell value times 10: https://pro.arcgis.com/en/pro-app/latest/tool-reference/spatial-analyst/raster-calculator.htm). Then I was publishing the resulting layer as a tile package with AGOL elevation scheme to my ArcGIS Online account and adding it to a 3D web scene as elevation source ( https://support.esri.com/en/technical-article/000014615#:~:text=Run%20the%20Share%20Package%20tool,as%20an%20elevation%20tile%20layer).

Also, I think you need to work with the local 3D scene in AGOL to achieve this. Hope you'll find something useful in the above notes.

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