Remove Files From LAS Dataset (Data Management)

Summary

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

Usage

• File paths must use the folder separator associated with the operating system.

• Only a folder that directly contains LAS files can be provided as an input. When a folder is specified, all LAS files that reside in that 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(in_las_dataset, {in_files}, {in_surface_constraints})

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

Derived Output

Name	Explanation	Data Type
derived_las_dataset	The updated LAS dataset.	LAS Dataset Layer

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

try:
    # Script variables
    arcpy.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 Exception as err:
    print(err.args[0])

Environments

Current Workspace

Licensing information

• Basic: Requires 3D Analyst or Spatial Analyst
• Standard: Yes
• Advanced: Yes