lazrs

import laspy import os # Create a dummy LAS file for demonstration header = laspy.header.Header() header.point_format.scale = [0.01, 0.01, 0.01] header.point_format.offset = [0, 0, 0] points = laspy.create_points(point_count=100) points.x = range(100) points.y = range(100) points.z = range(100) input_filename = 'dummy.las' output_filename = 'compressed.laz' with laspy.open(input_filename, mode='w', header=header) as writer: writer.write_points(points) print(f"Created {input_filename} with {points.x.shape[0]} points.") # --- Using lazrs as a backend via laspy to compress and decompress --- # laspy will automatically detect and use lazrs if installed. # Explicitly set laz_backend=laspy.compression.LazBackend.Lazrs if needed. # Compress to LAZ using lazrs (implicitly by laspy) with laspy.open(input_filename, mode='r') as infile: with laspy.open(output_filename, mode='w', header=infile.header) as outfile: outfile.write_points(infile.read_points()) print(f"Compressed to {output_filename} using lazrs backend.") # Decompress from LAZ using lazrs (implicitly by laspy) with laspy.open(output_filename, mode='r') as reader: decompressed_points = reader.read_points() print(f"Decompressed {decompressed_points.x.shape[0]} points from {output_filename}.") assert decompressed_points.x.shape[0] == points.x.shape[0] # Clean up dummy files os.remove(input_filename) os.remove(output_filename) print("Cleaned up dummy files.")