NAME

       lasmerge - merge multiple LAS files into a single file

SYNOPSIS

       lasmerge [-h | -i arg ...  [-scale 0.01] [-verbose] [-olas] [-o arg] ]

DESCRIPTION

       lasmerge reads multiple LIDAR data files in the LAS format and merges them into a single file.  The file‐
       names can either be provided one by one or in form of a text file.

       All  the  header information of the first file provided is used including variable and user_defined head‐
       ers.  But some records are updated by integrating  the  corresponding  information  from  other  headers.
       These are:

       • number_of_point_records

       • number_of_points_by_return[5]

       • max_x, min_x, max_y, min_y, max_z, and min_z

       In addition x_scale_factor, y_scale_factor, z_scale_factor may need to be increased to accommodate a pos‐
       sibly larger bounding box.  The user can also set those in the command line with

       -scale 0.01 or -scale_xyz 0.01 0.01 0.001

       Similarly a new offset can be specified

       -xyz_offset 63025000 483450000 0

OPTIONS

       -h     produce help message

       -i arg input LAS file.  Can be specified multiple times.

       -scale 0.01
              scale input file(s)

       -verbose
              verbose output

       -olas  output to STDOUT.

       -o arg output LAS file.

EXAMPLE

       $ lasmerge -i in1.las -i in2.las -i in3.las -o out.las

       merge the three inX.las files into one out.las file.

       $ lasmerge -i las_file_list.txt -o out.las

       merges all LAS files listed in the text file into one out.las file

       $ lasmerge -i las_file_list.txt -o out.las -scale 0.01 -verbose

       merges  the file and stores the LIDAR points with 0.01 accuracy in x, y, and z and prints out control in‐
       formation.

       $ lasmerge -i las_file_list.txt -o out.las -scale_xyz 0.01 0.01 0.001

       same but with a different accuracy for z.

                                                26 February 2014                                     lasmerge(1)