v.in.pdal.1grass - Man Page
Converts LAS LiDAR point clouds to a GRASS vector map with PDAL.
Keywords
vector, import, LIDAR
Synopsis
v.in.pdal
v.in.pdal --help
v.in.pdal [-wocr] 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] [--overwrite] [--help] [--verbose] [--quiet] [--ui]
Flags
- -w
Reproject to projects’s coordinate system if needed
Reprojects input dataset to the coordinate system of the GRASS project (by default only datasets with the matching coordinate system can be imported- -o
Override projection check (use current project’s CRS)
Assume that the dataset has the same coordinate reference system as the current project- -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
- --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
Parameters
- 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
Description
Imports a point cloud (e.g. from a LAS file) as vector points with the PDAL library. v.in.pdal supports the following filters:
- 2D region filter
- Z coordinates filter
- return filter
- class filter
Examples
Import only XYZ coordinates of points, limit the import to the current computational region and reproject to the current project’s coordinate reference system during the import:
v.in.pdal input=points.las output=points -c -r -w
References
- 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]
See Also
r.in.pdal, g.region, v.vect.stats v.in.ogr,
Author
Vaclav Petras, NCSU GeoForAll Lab
Source Code
Available at: v.in.pdal source code (history)
Accessed: Monday Sep 09 08:49:01 2024
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