ArcGIS Help 10.1 - Remove Files From LAS Dataset (Data Management)

Summary

Removes one or more LAS files and surface constraint features from a LAS dataset.

Usage

When a folder is specified for removal, all LAS files that reside in the folder will be removed from the LAS dataset.
Surface constraint features only have to be cited by their name. For example, 'boundary.shp' and 'sample.gdb/boundary' would just be referred to as 'boundary'.

Syntax

RemoveFilesFromLasDataset_management (in_las_dataset, {in_files}, {in_surface_constraints})

Parameter	Explanation	Data Type
in_las_dataset	The input LAS dataset.	LAS Dataset Layer
in_files [in_files,...] (Optional)	The LAS files or folders containing LAS files that will be removed from the LAS dataset.	Folder; File
in_surface_constraints [in_surface_constraints,...] (Optional)	The name of the surface constraint features that will be removed from the LAS dataset.	String

Code Sample

RemoveFilesFromLasDataset example 1 (Python window)

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

import arcpy
from arcpy import env

env.workspace = "C:/data"
arcpy.RemoveFilesFromLasDataset_management("test.lasd", 
                                           "LA_N; LA_S/LA_5S4E.las",
                                           "boundary.shp; streams.shp")

RemoveFilesFromLasDataset example 2 (stand-alone script)

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

'''*********************************************************************
Name: Modify Files in LAS Dataset& Calculate Stats for LASD
Description: Adds files & surface constraints to a LAS dataset, then 
             calculates statistics and generates report.
*********************************************************************'''
# Import system modules
import arcpy
from arcpy import env
import exceptions, sys, traceback

try:
    # Script variables
    env.workspace = 'C:/data'
    lasd = 'sample.lasd'
    oldLas = ['2006', '2007/file2.las']
    newLas = ['2007_updates_1', '2007_updates_2']
    oldSurfaceConstraints = ['boundary.shp', 'streams.shp']
    newSurfaceConstraints = [['sample.gdb/boundary', '<None>', 
                              'Soft_Clip']
                             ['sample.gdb/streams', 'Shape.Z', 
                              'Hard_Line']]
    arcpy.management.RemoveFilesFromLasDataset(lasd, oldLas, 
                                               oldSurfaceConstraints)
    arcpy.management.AddFilesToLasDataset(lasd, newLas, 'RECURSION', 
                                          newSurfaceConstraints)
    arcpy.management.LasDatasetStatistics(lasd, "UPDATED_FILES", 
                                          "lasd_stats.txt", 
                                          "LAS_FILE", "DECIMAL_POINT", 
                                          "SPACE", "LAS_summary.txt")
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

Licensing Information

ArcGIS for Desktop Basic: Requires 3D Analyst or Spatial Analyst

ArcGIS for Desktop Standard: Yes

ArcGIS for Desktop Advanced: Yes

11/18/2013

Remove Files From LAS Dataset (Data Management)