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Native Python ASPRS LAS read/write library

Project description


Laspy is a python library for reading, modifying and creating LAS LiDAR files.


Laspy is a pythonic library for reading, modifying and writing LAS files. Support for LAZ is limited to reading LAS version 1.0-1.3 files. Laspy is compatible with Python 2.6+ and 3.5+.

Laspy includes a set of command line tools which can be used to do basic file operations like format translation and validation as well as comparing LAS files.


A simple example to show the basics of Laspy. Here we create an output file that only consists of terrain points from the input file:

from laspy.file import File
import numpy as np

inFile = File('/path/to/file.las', mode='r')

I = inFile.Classification == 2

outFile = File('/path/to/output.las', mode='w', header=inFile.header)
outFile.points = inFile.points[I]

API Documentation and tutorials are available at PythonHosted.


Laspy can be installed either with pip:

pip install laspy

or by running the setup script included in the source distribution:

python build --user
python install --user

Laspy is only dependent on numpy and should therefore work on Linux, OS X and Windows as long as a working installation of numpy is available.


Version 1.7.0

  • Fixed bug in point record format 5, 9 and 10 (#105 <>_)
  • Return explicit msg if laszip executable was not found (#110 <>_)
  • Supprt numpy 1.17 (#122 <>_)

Version 1.6.0

  • Bug fix (#92 <>_)
  • Test creation of all valid custom dimension data types
  • Modify handling of extra bytes to be char data instead of numeric byte data

Version 1.5.1

  • Bug fixes (#67 <>, #75 <>, b02b40900b5 <>_)
  • Allow usage of laszip-cli when working with LAZ files (#77 <>_)

Version 1.5.0

  • Improved memory handling in base.FileManager (#48 <>_)
  • Introduced r- file mode, that only reads the header of as LAS file (#48 <>_)
  • LAS v. 1.4 bug fixes (#55 <>_)
  • Python 3 support (#62 <>_)

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