A tutorial on lidar in GRASS GIS.
Contents
What is lidar?
Download tiles of lidar from: https://orthos.dhses.ny.gov/ Zoom in on Governor’s island and then click the download icon. From the Lidar results tab download the following lidar tiles from 2017:
NYC_TopoBathymetric2017_LiDAR
USGS_NYC2014_LIDAR
Point Data Abstraction Library
Install Anaconda
Install PDAL
On Windows right click on the Anaconda3
prompt
and run as Administrator
conda update conda
conda install -c conda-forge pdal
conda install -c conda-forge pdal python-pdal gdal
g.extension extension=r.in.pdal
Start GRASS GIS
in the nyspf_govenors_island
location
in a new mapset called lidar
.
r.in.pdal input=D:\nyc\lidar_2017\975187.las output=binned_2017
g.region n=189850 s=189100 e=978550 w=976850 save=landforms
r.mask vector=shoreline
Import all 2017 tiles
Then set region to landforms and reimport
Binned Lidar |
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Later in digital fabrication chapter 3D print difference in 2014 and 2017?