arcpy - saving results from a geometric network trace

GregKing

Hi,

I’m writing a script to perform some traces of a geometric network.  So far I have managed to create the script to setup all the layers and run the trace.  The result is the selection of the geometric network elements within a selection group.

The issue I am having is how to then save out the traced features into a separate feature class from the selection group.  Has anyone done this through python/arcpy previously and can provide some guidance?

Regards

Greg

KevinHibma

The output from Trace is actually a group layer. So you need to "select" the particular item out of the group layer you want before you can do something with it. In Modelbuilder, this is pretty straight forward as you'd use the Select tool (only available within Modelbuilder). With a script, you need to properly reference the layer inside the group that you want.

arcpy.Snap_edit(Flags, "'Primary OH Conductor' VERTEX '30 Meters'")

arcpy.TraceGeometricNetwork_management(El_Paso_Electric, "Storm_Net", Flags, "TRACE_UPSTREAM", "", "", "", "", "", "NO_TRACE_ENDS", "TRACE_INDETERMINATE_FLOW", "", "", "AS_IS", "", "", "", "AS_IS")

network = arcpy.mapping.Layer("Storm_Net")

if network.isGroupLayer:

    for sublayer in network:

        arcpy.AddMessage("  {} ".format(sublayer.name))

# Process: Select Data

#arcpy.SelectData_management("Storm_Net", "ServiceLocation")  # <--- dont use

# Build up the path to the item you want, in this case, "Storm_Net" is my output Trace, and "ServiceLocation" is the item inside I want.

arcpy.CopyFeatures_management("Storm_Net/ServiceLocation", outputFeatureClass)

FYI: Output from the AddMessage to list items in the GroupLayer:

•   ElectricDataset_Net_Junctions
•   MiscNetworkFeatureBank
•   SwitchBank
•   CapacitorBank
•   FuseBank
•   RegulatorBank
•   Light
•   Generator
•   DynamicProtectiveDeviceBank
•   Motor
•   ServiceLocation
•   TransformerBank
•   Flags
•   SecondaryUGLineSection
•   SecondaryOHLineSection
•   PrimaryOHLineSection
•   PrimaryUGLineSection