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 [-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]

Flags

-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

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

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

Description

v.in.pdal supports the following PDAL filters:

v.in.pdal supports the following filters natively:

Examples

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

See Also

r.in.lidar, r3.in.lidar, g.region, v.vect.stats v.in.ogr,

References

Author

Vaclav Petras, NCSU GeoForAll Lab

Source Code

Available at: v.in.pdal source code (history)

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© 2003-2020 GRASS Development Team, GRASS GIS 7.8.5 Reference Manual

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GRASS 7.8.5 GRASS GIS User's Manual