LAS to Multipoint (3D Analyst)

Imports one or more files in LAS format, the industry standard for LIDAR data, into a new multipoint feature class. Supported LAS file format versions are 1.0 and 1.1.

Usage tips


LASToMultipoint_3d (input, in_feature_dataset, out_feature_class, average_point_spacing, class_code, return, attribute, input_coordinate_system, file_suffix)
Parameter Explanation Datatype
Input (Required)

One or more files or folders with data in the LAS version 1.0 or 1.1 format. The LAS format is an industry standard for LIDAR data.

File | Folder; File | Folder...
Input Feature Dataset (Required)

The name of an existing feature dataset where the output feature class will be created.

Feature Dataset
Output Feature Class (Required)

The newly created multipoint feature class to which LIDAR points will be added.

Feature Class
Average Point Spacing (Optional)

The average 2-D distance between points in the input file(s). This can be an approximation. If areas were sampled at different densities specify the smaller spacing. The value needs to be provided in the projection units of the output coordinate system.

Input Class Codes (Optional)

Numeric classification codes to use as a query filter. The default is no filter.

Input Return Values (Optional)

The return values used as a query filter. Valid return values are 1-5, LAST_RETURNS, and ANY_RETURNS. The default is ANY_RETURNS.

Input Attribute Names (Optional)

One or more LAS attributes to load and store and optionally the field names to use. The default is none. Supported attribute keywords are INTENSITY, RETURN_NUMBER, NUMBER_OF_RETURNS, SCAN_DIRECTION_FLAG, EDGE_OF_FLIGHTLINE, CLASSIFICATION, SCAN_ANGLE_RANK, FILE_MARKER, USER_BIT_FIELD, and GPS_TIME.

String {String}; String {String}...
Input Coordinate System (Optional)

The coordinate system of the input LAS file. This will default to that specified in the LAS file. If for some reason it's not defined in the file but you know what it is provide it here.

Coordinate System
File Suffix (Optional)

The suffix of the files to import when a folder is specified on input.

Data types for geoprocessing tool parameters

Script Example

# Purpose: Create a multipoint feature class using a LAS file.

# Create the Geoprocessor object
import arcgisscripting
gp = arcgisscripting.create()

#Check out the 3D Analyst extension
gp.CheckOutExtension ("3D")

    # Set the workspace (to avoid having to type in the full path to the data every time)
    gp.workspace = "D:/Docs1/GP/GPOutput"

    # Select the 3D Analyst Toolbox
    gp.toolbox = "3D"

    # Process: create a multipoint feature class using a *.las input file
    gp.lastomultipoint_3d("sample_1.las", "Test.gdb\\sample_1", "1")

    # If an error occurred while running the tool print the error messages.
    print gp.GetMessages()

See Also

  • An overview of the 3D Analyst Conversion toolset
  • ASCII 3D To Feature Class (3D Analyst)