NAME¶

pklas2img - Rasterize LAS/LAZ point clouds with filtering/compositing options

SYNOPSIS¶

pklas2img
-i lasfile -o output [options] [advanced options]

DESCRIPTION¶

pklas2img converts a las/laz point cloud into a gridded raster dataset. The implementation is based on liblas ⟨http://www.liblas.org/⟩ API. You can define the bounding box, grid cell size and spatial reference set. The composite rule for multiple returns within a single grid cell can be set with the option -comp. The default attribute is z (height), but can also be intensity (if available), the scan angle rank (-n angle), the return number (-n return) or the total number of returns in that grid cell (-n nreturn). To select specific returns only, set the option -fir (first, last, single, multiple, or all).

OPTIONS¶

-i filename, --input filename

Input las file

-o filename, --output filename

Output image file

-n attribute, --name attribute

names of the attribute to select: intensity, angle, return, nreturn, spacing, z

-comp composite, --comp composite

composite for multiple points in cell (min, max, absmin, absmax, median, mean, sum, first, last, profile (percentile height values), number (point density)). Last: overwrite cells with latest point

-fir type, --filter type

filter las points (first,last,single,multiple,all).

-angle_min value, --angle_min value

minimum scan angle to read points.

-angle_max value, --angle_max value

maximum scan angle to read points.

-a_srs EPSG:number, --a_srs EPSG:number

assign the projection for the output file in epsg code, e.g., epsg:3035 for European LAEA projection

-ulx value, --ulx value

Upper left x value bounding box (in geocoordinates if georef is true). 0 is read from input file

-uly value, --uly value

Upper left y value bounding box (in geocoordinates if georef is true). 0 is read from input file

-lrx value, --lrx value

Lower right x value bounding box (in geocoordinates if georef is true). 0 is read from input file

-lry value, --lry value

Lower right y value bounding box (in geocoordinates if georef is true). 0 is read from input file

-dx value, --dx value

Output resolution in x (in meter)

-dy value, --dy value

Output resolution in y (in meter)

-ot type, --otype type

Data type for output image ({Byte / Int16 / UInt16 / UInt32 / Int32 / Float32 / Float64 / CInt16 / CInt32 / CFloat32 / CFloat64}). Empty string: inherit type from input image

-of out_format, --oformat out_format

Output image format (see also gdal_translate(1)).

-ret value, --ret value

number(s) of returns to include

-class number, --class number

classes to keep: 0 (created, never classified), 1 (unclassified), 2 (ground), 3 (low vegetation), 4 (medium vegetation), 5 (high vegetation), 6 (building), 7 (low point, noise), 8 (model key-point), 9 (water), 10 (reserved), 11 (reserved), 12 (overlap)

-v level, --verbose level

verbose mode

Advanced options

-nbin value, --nbin value

Number of percentile bins for calculating percentile height value profile (=number of output bands)

-nodata value, --nodata value

nodata value to put in image if not valid

-co option, --co option

Creation option for output file. Multiple options can be specified.

-ct filename, --ct filename

colour table in ASCII format having 5 columns: id R G B ALFA (0: transparent, 255: solid)