v.in.pdal - Converts LAS LiDAR point clouds to a
GRASS vector map with PDAL.
v.in.pdal
v.in.pdal --help
v.in.pdal [-wocrjkhm] input=name
output=name [id_layer=string]
[return_layer=string] [class_layer=string]
[rgb_layer=string] [spatial=xmin,ymin,xmax,ymax]
[zrange=min,max] [return_filter=string]
[class_filter=integer[,integer,...]]
[input_srs=string]
[max_ground_window_size=float]
[ground_slope=float] [max_ground_distance=float]
[initial_ground_distance=float]
[ground_cell_size=float] [--overwrite] [--help]
[--verbose] [--quiet] [--ui]
- -w
-
Reproject to location’s coordinate system if needed
Reprojects input dataset to the coordinate system of the GRASS location (by
default only datasets with the matching cordinate system can be
imported
- -o
-
Override projection check (use current location’s projection)
Assume that the dataset has same projection as the current location
- -c
-
Do not automatically add unique ID as category to each point
Create only requested layers and categories
- -r
-
Limit import to the current region
- -j
-
Classify and extract ground points
This assignes class 2 to the groud points
- -k
-
Classify ground points
- -h
-
Compute height for points as a difference from ground
This requires points to have class 2
- -m
-
Use approximate algorithm in ground filter
- --overwrite
-
Allow output files to overwrite existing files
- --help
-
Print usage summary
- --verbose
-
Verbose module output
- --quiet
-
Quiet module output
- --ui
-
Force launching GUI dialog
- input=name
[required]
-
LAS input file
LiDAR input files in LAS format (*.las or *.laz)
- output=name
[required]
-
Name for output vector map
- id_layer=string
-
Layer number to store generated point ID as category
Set to 1 by default, use -c to not store it
- return_layer=string
-
Layer number to store return information as category
Leave empty to not store it
- class_layer=string
-
Layer number to store class number as category
Leave empty to not store it
- rgb_layer=string
-
Layer number where RBG colors are stored as category
Leave empty to not store it
- spatial=xmin,ymin,xmax,ymax
-
Import subregion only
Format: xmin,ymin,xmax,ymax - usually W,S,E,N
- zrange=min,max
-
Filter range for z data (min,max)
- return_filter=string
-
Only import points of selected return type
If not specified, all points are imported
Options: first, last, mid
- class_filter=integer[,integer,...]
-
Only import points of selected class(es)
Input is comma separated integers. If not specified, all points are
imported.
- input_srs=string
-
Input dataset projection (WKT or EPSG, e.g. EPSG:4326)
Override input dataset coordinate system using EPSG code or WKT
definition
- max_ground_window_size=float
-
Maximum window size for ground filter
Default: 33
- ground_slope=float
-
Slope for ground filter
Default: 1.0
- max_ground_distance=float
-
Maximum distance for ground filter
Default: 2.5
- initial_ground_distance=float
-
Initial distance for ground filter
Default: 0.15
- ground_cell_size=float
-
Initial distance for ground filter
Default: 1
v.in.pdal supports the following PDAL filters:
- groud detection with Point Cloud Library (PCL) Progressive Morphological
Filter (Zhang 2003) (filters.ground)
- filters.height (requires PCL)
v.in.pdal supports the following filters natively:
- 2D region filter
- Z coordinates filter
- return filter
- class filter
Import only XYZ coordinates of points, limit the import to the
current computational region and reproject to the Location projection during
the import:
v.in.pdal input=points.las output=points -c -r -w
r.in.lidar, r3.in.lidar, g.region,
v.vect.stats v.in.ogr,
- V. Petras, A. Petrasova, J. Jeziorska, H. Mitasova (2016): Processing
UAV and lidar point clouds in GRASS GIS. XXIII ISPRS Congress 2016
[ISPRS Archives, ResearchGate]
- Zhang, Keqi, et al. A progressive morphological filter for removing
nonground measurements from airborne LIDAR data. Geoscience and
Remote Sensing, IEEE Transactions on 41.4 (2003): 872-882.
Vaclav Petras, NCSU GeoForAll Lab
Last changed: $Date: 2016-08-23 04:00:20 +0200 (Tue, 23 Aug
2016) $
Available at: v.in.pdal source code (history)
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© 2003-2019 GRASS Development Team, GRASS GIS 7.6.0
Reference Manual