Python Script for Surface Volume (3D Analyst)

MichaelGarcia-Carreras — Tue, 01 Mar 2011 19:11:22 GMT

I'm very thankful for the example script provided below from the help menu. Especially the inclusion of a range for the plane input. However, I cannot for the life of me, figure out how to write all of the results to one .txt or .csv. When I include an output = 'c:/data/example.csv' and then specify the output variable in result = arcpy.SurfaceVolume_3d(inSurface, output, "ABOVE", plane, z_factor, pyramid_level), it only writes the first result to the file. In ArcObjects I believe the method is called writestream or writeline. Is there something similar in python?

Thanks,
Mike

# Name: Surface Volume Example
# Description: The following stand-alone script demonstrates how to use the
#              Surface Volume tool to determine the area and volume of a
#              TIN dataset using planes of 100, 200, and 300 feet.
#
# Requirements: 3D Analyst extension
# Author: ESRI

# Import system modules
import arcpy
from arcpy import env

# Obtain a license for the 3D Analyst extension
arcpy.CheckOutExtension("3D")

# Set environment settings
env.workspace = "C:/data"

try:
    # Set Local Variables
    inSurface = "sample.gdb/featuredataset/elevation_terrain"
    z_factor = 3.28
    pyramid_level = 5
    for plane in range(100, 301, 100):
        #Execute SurfaceVolume
        result = arcpy.SurfaceVolume_3d(inSurface, "", "ABOVE", plane,
                                        z_factor, pyramid_level)
    print result.GetMessage(0)
except Exception as e:
    # Returns any other error messages
    print e.message

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Python Script for Surface Volume (3D Analyst)