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LiDAR functions
PLEASE NOTE: this page is outdated and will not be updated anymore
This page describes the functionality of the LAStools that might be used on LiDAR data.
DEM (Digital Elevation Model) = DSM and DTM
DTM (Digital Terrain Model = ground points DSM (Digital Surface Model) = non-ground points
usage [name of function] -i filename.las -o new_filename.las
lasmerge
Merges two or more .las/.laz files together into one
lasmerge -i in1.las -i in2.las -o new_filename.las
lastile
Tiles a potentially large amount of LAS points from one or many files into square, non-overlapping tiles of specified size.
lasground_new
Classifies LiDar datapoints into ground (class = 2) and non-ground (e.g. buildings/vegetation) (class = 1). usage
lasnoise
Detects noise and marks it as class = 7
lasheight
Computes the height of non_ground points (class = 1), given that the datapoints have already been classified (using e.g. lasground)
lasclassify
Classifies datapoints into buildings and high vegetation (e.g. trees), given that the data has already been classified into ground and non-ground points (using e.g. lasground) and the height of non ground points has been computed (using e.g. lasheight).