Toegang tot "Accumulate Attributes" in model of Python

ErikMartin

<\/HEAD>Is er een manier om toegang te krijgen tot de ArcHydro "Accumulate Attributes" tool via een model of Python?  De tool staat op de werkbalk en werkt goed voor mijn doeleinden, maar ik probeer het verwerken van veel bewerkingen te automatiseren en ik zie het niet beschikbaar in de ArcHydro toolbox, noch zie ik ergens Python-syntaxis.  Ik gebruik ArcGIS 10 en ArcHydro 2.0.1.75.<\/SPAN>

Bedankt,
-Erik<\/BODY><\/HTML>

ErikMartin

Sorry for the long delayed response-- thanks for the reminder jaydubbbbb.  Here's the script, and attached is a toolbox with a tool w/ parameters all set up to work with it.  It uses the geometric network tools, so Arc 10.1 or greater is needed.  There's some basic metadata in the tool description.

Each line segment is looped through, so it takes a little while to run.  My dataset with ~400,000 records took between a day and a day and a half to run.
-Erik

import arcpy
Workspace = "in_memory"
arcpy.env.overwriteOutput = True
arcpy.env.workspace = Workspace

#variables
network = arcpy.GetParameterAsText(0)
netHydroFC_path = arcpy.GetParameterAsText(1)
nonNetHydroFC = arcpy.GetParameterAsText(2)
accumSourceField = arcpy.GetParameterAsText(3)
accumTargetField = arcpy.GetParameterAsText(4)
calculateMe = arcpy.GetParameterAsText(5)

#get the text name of the network FC without the full path by taking what's after the last "\"
netHydroFC = netHydroFC_path.split("\\")[-1].strip()

#list fields to include in cursor
fields = ("OBJECTID", accumSourceField, accumTargetField)
arcpy.AddMessage("Running...")
#open arcpy.da cursor
with arcpy.da.UpdateCursor(nonNetHydroFC, fields) as rows:
 for row in rows:
  #get values for each row
  rowObjID = row[0]
  rowCtchVal = float(row[1])
  DAval = float(row[2])
  #If there's already an accumulated value skip that record
  if DAval <> int(calculateMe):
   arcpy.AddMessage("ObjectID " + str(rowObjID) + " is already calculated")
  #If the value is equal to the "calculate me" flag run the operation
  if DAval == int(calculateMe):
   arcpy.AddMessage("Calculating ObjectID # " + str(rowObjID))
   #make a feature layer in memory and select the record that is active in the cursor
   arcpy.MakeFeatureLayer_management(nonNetHydroFC, "sel_lyr")
   selection = '"OBJECTID" = {}'.format(rowObjID)
   arcpy.SelectLayerByAttribute_management("sel_lyr", "NEW_SELECTION", selection)

   #create a point at the start vertex of the selected record
   arcpy.FeatureVerticesToPoints_management("sel_lyr", "flag", "START")

   #select the upstream network & take the line layer from the returned layer group (network + junctions)
   flag = "flag"
   arcpy.TraceGeometricNetwork_management(network, "netLayer", flag, "TRACE_UPSTREAM")
   usSelection = arcpy.SelectData_management("netLayer", netHydroFC)
   field = accumSourceField
   usVals = [r[0] for r in arcpy.da.SearchCursor(usSelection, (field))]
   sumUSVals = float(sum(usVals))
   newDAVal = float(sumUSVals + rowCtchVal)
   row[2] = newDAVal
  rows.updateRow(row)

Accumulate.zip