Native Python ASPRS LAS read/write library
Project description
Laspy
Laspy is a python library for reading, modifying and creating LAS LiDAR files.
Laspy is compatible with Python 3.6+.
Examples
Directly read and write las
import laspy
las = laspy.read('filename.las')
las.points = las.points[las.classification == 2]
las.write('ground.laz')
Open data to inspect header (opening only reads the header and vlrs)
import laspy
with laspy.open('filename.las') as f:
print(f"Point format: {f.header.point_format}")
print(f"Number of points: {f.header.point_count}")
print(f"Number of vlrs: {len(f.header.vlrs)}")
Use the 'chunked' reading & writing features
import laspy
with laspy.open('big.laz') as input_las:
with laspy.open('ground.laz', mode="w", header=input_las.header) as ground_las:
for points in input_las.chunk_iterator(2_000_000):
ground_las.write_points(points[points.classification == 2])
Appending points to existing file
import laspy
with laspy.open('big.laz') as input_las:
with laspy.open('ground.laz', mode="a") as ground_las:
for points in input_las.chunk_iterator(2_000_000):
ground_las.append_points(points[points.classification == 2])
API Documentation and tutorials are available at PythonHosted.
Installation
Laspy can be installed either with pip:
pip install laspy # without LAZ support
# Or
pip install laspy[laszip] # with LAZ support via LASzip
# Or
pip install laspy[lazrs] # with LAZ support via lazrs
Changelog
Version 2.0.0
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-cliwhen working with LAZ files #77
Version 1.5.0
Release history Release notifications | RSS feed
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