NAME

       txt2las - converts LIDAR data from ASCII format into LAS representation

SYNOPSIS

       txt2las [-h | -parse tsxyz lidar.txt | -parse txyzar lidar.txt.gz lidar.laz | -parse xyz [-scale 0.02 ]
               -i lidar.txt -o lidar.laz | -parse xyzsst [-verbose] [-scale 0.05] lidar.txt | -parse xsysz
               [-xyz_scale 0.02 0.02 0.01] lidar.txt ]

DESCRIPTION

       txt2las  converts  LIDAR data from a standard ASCII format into the more efficient binary LAS representa‐
       tion.

OPTIONS

       -h     produce help message

       -parse arg
              Parsing Flags

              The '-parse tsxyz' flag specifies how to interpret each line of the ASCII file.

              For example, 'tsxyzssa' means that the first number is the gpstime,  the  next  number  should  be
              skipped,  the  next  three numbers are the x, y, and z coordinate, the next two should be skipped,
              and the next number is the scan angle.

              The other supported entries are:

              • i - intensity

              • n - number of returns of given pulse

              • r - number of return

              • c - classification

              • u - user data

              • p - point source ID

              • e - edge of flight line flag

              • d - direction of scan flag.

       -scale arg
              Scale

              The '-scale 0.02' flag specifies the quantization.

              The default value of 0.01 means that the smallest increment two between coordinates is 0.01.

              If measurements are in meters this corresponds to centimeter accuracy, which is  commonly  consid‐
              ered sufficient for LIDAR data.

       -i arg input LAS file.

       -o arg output text file.

       -xyz_offset 500000 2000000 0

       -xyz_scale 0.02 0.02 0.01

       -file_creation 67 2003

       -system_identifier "Airborne One Leica 50,000 Hz"

       -generating_software "TerraScan"

EXAMPLE

       Simple conversion to text file

       $ txt2las -i lidar.las -o lidar.txt -parse xyz

       converts  LAS  file to ASCII and places the x, y, and z coordinate of each point at the 1st, 2nd, and 3rd
       entry of each line.  The entries are separated by a space.

       $ txt2las -i lidar.taxyz -o lidar.las -parse ssxyz

       converts ASCII file and uses the 3rd, 4th, and 5th entry of each line as the x, y, and  z  coordinate  of
       each point.

       $ txt2las -i lidar.txt.gz -o lidar.las -parse txyzsa

       converts  a gzipped ASCII file and uses the 1st entry of each line as the gps time, the 3rd, 4th, and 5th
       entry as the x, y, and z coordinate of each point, and the 6th entry as the scan angle

                                                17 December 2017                                      txt2las(1)