How to set layer elevation on-the-ground in python script?

Question

Hi

I'm creating 3D scenes and updating them from geodatabase using python script in ArcGIS Pro. I have automated entire process except one little step. Features in a building footprints layer have to be on-the-ground for extrusion but if I add the data from geodatabase then the features in layer are at-an-absolute height. How to set layer elevation setting "on-the-ground" with python script in ArcGIS PRO?

Thank you in advance

Andres

nahardito · Answer

where the code is added? how to add the code in python for the purposes?

AndresMaremäe1 · Answer

Well, CIM did the trick. So many thanks, Kory!

At first I did look it like a year ago also but I did not understand that it is possible to add new properties with setDefiniton method. Anyhow works now like a charm.

I will add the code over here if anyone will need a hint or smthng.

import jsonimport arcpy
def OnTheGround(in_lyr😞    proj = arcpy.mp.ArcGISProject('Current')  scene = proj.listMaps('Scene')[0]  lyr = scene.listLayers(in_lyr)[0]
  json_string = r'''[      {        "type" : "CIMMapElevationSurface",        "baseSources" : [          {            "type" : "CIMElevationSource",            "dataConnection" : {              "type" : "CIMStandardDataConnection",              "workspaceConnectionString" : "DATABASE=D:\ArcGis\Projects\DTM2019\DTM2019.gdb",              "workspaceFactory" : "FileGDB",              "dataset" : "DEM2019",              "datasetType" : "esriDTRasterDataset"            },            "verticalUnit" : {              "uwkid" : 9001            },            "visibility" : true,            "name" : "DEM2019",            "elevationSourceID" : "a4638e171e3ba60ab47074c9ee3fa4950"          }        ],        "elevationMode" : "BaseGlobeSurface",        "name" : "Ground",        "verticalExaggeration" : 1,        "mapElevationID" : "{EC00A89B-0733-41CB-AECB-14F58E16E64C}",        "color" : {          "type" : "CIMRGBColor",          "values" : [            255,            255,            255,            100          ]        },        "surfaceTINShadingMode" : "Smooth",        "visibility" : true,        "expanded" : true      }    ]'''
  cim = lyr.getDefinition('V2')
  cim_elev = json.loads(json_string)  cim.elevationSurfaces = cim_elev  cim.layerElevation.mapElevationID = "{EC00A89B-0733-41CB-AECB-14F58E16E64C}"  cim.featureElevationExpression = ''  lyr.setDefinition(cim)
def AtAnAbsoluteHeight(in_lyr😞    proj = arcpy.mp.ArcGISProject('Current')  scene = proj.listMaps('Scene')[0]  lyr = scene.listLayers(in_lyr)[0]
  cim = lyr.getDefinition('V2')    cim.elevationSurfaces= ""  cim.layerElevation.mapElevationID = ''  cim.featureElevationExpression = "Shape.Z"  lyr.setDefinition(cim)

AndresMaremäe1 · Answer

Kory, I did not notice your answer before. Your suggested solution sounds really interesting and I will try it next week. Thank you and I will report about my experiment.