Setting elevation using arcpy

saldanax

Hello! I am currently developing a standalone python script to create a 3D scene. The points that I am plotting have a height component relative to the ground. Currently, my default for ground elevation is set to absolute and I need to manually change it to relative to the ground. Any suggestions on how to this using arcpy? I've been searching but not much luck. Thanks! 

Andrew Johnson

Hi,

There is no out of the box property available but you can backdoor it by updating the CIM for the layer. Here's a sample that sets it to the geometry Z values. If you need to set it to a field just use $feature.fieldname instead of Shape.Z

 

# Reference a project, map, and layer using arcpy.mp
p = arcpy.mp.ArcGISProject('current')
m = p.listMaps('Scene')[0]
l = m.listLayers('FewPoints')[0]
# Return the layer's CIM definition
l_cim = l.getDefinition('V2')
# Set the layer elevation to relative to ground based on Z values
l_cim.featureElevationExpression="Shape.Z"
#Push the changes back to the layer
l.setDefinition(l_cim)