ArcGIS Help 10.2 - Delete Terrain Points (3D Analyst)

Summary

Deletes points within a specified area of interest from one or more features that participate in a terrain dataset.

Usage

Deleting points from an embedded feature class will invalidate the terrain. Run the Build Terrain tool after deleting points.
If the terrain is in SDE, it must be registered as versioned.

Syntax

DeleteTerrainPoints_3d (in_terrain, data_source, polygon_features_or_extent)

Parameter	Explanation	Data Type
in_terrain	The input terrain dataset.	Terrain Layer
data_source	One or more feature classes from which points will be removed.	String
polygon_features_or_extent	Specifies the area from which points will be removed. A polygon feature class or an extent can be used. If extent values are desired, use an arcpy.Extent object.	Feature Layer; Extent

Code Sample

DeleteTerrainPoints example 1 (Python window)

The following sample demonstrates the use of this tool in the Python window:

import arcpy
from arcpy import env

arcpy.CheckOutExtension("3D")
env.workspace = "C:/data"
arcpy.DeleteTerrainPoints_3d("sample.gdb/featuredataset/terrain", 
                           "mass_pts_embed", "1379938 235633 1382756 237681")

DeleteTerrainPoints example 2 (stand-alone script)

The following sample demonstrates the use of this tool in a stand-alone Python script:

'''**********************************************************************
Name: Delete Terrain Outliers
Description: Uses Locate Outliers to identify outlier points in 
             a terrain dataset, and eliminates the outliers from the 
             terrain with Delete Terrain Points.
**********************************************************************'''
# Import system modules
import arcpy
import exceptions, sys, traceback
from arcpy import env

try:
    arcpy.CheckOutExtension('3D')
    # Set Local Variables
    env.workspace = 'C:/data'
    terrain = 'test.gdb/featuredataset/sample_terrain'
    terrainPt = 'elevation_pts' # name of terrain point data source
    outliers = 'in_memory/outliers'
    # Execute LocateOutliers
    arcpy.ddd.LocateOutliers(terrain, outliers, 'APPLY_HARD_LIMIT', -10, 
                             350, 'APPLY_COMPARISON_FILTER', 1.2, 120, 
                             0.8, 8000)
    # Execute Delete Terrain Points
    arcpy.ddd.DeleteTerrainPoints(terrain, terrainPt, outliers)
    arcpy.CheckInExtension('3D')
except arcpy.ExecuteError:
    print arcpy.GetMessages()
except:
    # Get the traceback object
    tb = sys.exc_info()[2]
    tbinfo = traceback.format_tb(tb)[0]
    # Concatenate error information into message string
    pymsg = 'PYTHON ERRORS:\nTraceback info:\n{0}\nError Info:\n{1}'\
          .format(tbinfo, str(sys.exc_info()[1]))
    msgs = 'ArcPy ERRORS:\n {0}\n'.format(arcpy.GetMessages(2))
    # Return python error messages for script tool or Python Window
    arcpy.AddError(pymsg)
    arcpy.AddError(msgs)

Environments

Current Workspace, Scratch Workspace, Auto Commit

Licensing Information

ArcGIS for Desktop Basic: Requires 3D Analyst

ArcGIS for Desktop Standard: Requires 3D Analyst

ArcGIS for Desktop Advanced: Requires 3D Analyst

3/7/2014

Delete Terrain Points (3D Analyst)