pklas2img1

Usage

Overview

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 FC-compF[0]. The default attribute is z (height), but can also be intensity (if available), the scan angle rank (FC-nF[0] angle), the return number (FC-nF[0] return) or the total number of returns in that grid cell (FC-nF[0] nreturn). To select specific returns only, set the option FC-firF[0] (first, last, single, multiple, or all).

Options

FC-iF[0] filename, FC--inputF[0] filename

Input las file

FC-oF[0] filename, FC--outputF[0] filename

Output image file

FC-nF[0] attribute, FC--nameF[0] attribute

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

FC-compF[0] composite, FC--compF[0] 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

FC-firF[0] type, FC--filterF[0] type

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

FC-angle_minF[0] value, FC--angle_minF[0] value

minimum scan angle to read points.

FC-angle_maxF[0] value, FC--angle_maxF[0] value

maximum scan angle to read points.

FC-a_srsF[0] EPSG:number, FC--a_srsF[0] EPSG:number

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

FC-ulxF[0] value, FC--ulxF[0] value

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

FC-ulyF[0] value, FC--ulyF[0] value

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

FC-lrxF[0] value, FC--lrxF[0] value

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

FC-lryF[0] value, FC--lryF[0] value

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

FC-dxF[0] value, FC--dxF[0] value

Output resolution in x (in meter)

FC-dyF[0] value, FC--dyF[0] value

Output resolution in y (in meter)

FC-otF[0] type, FC--otypeF[0] type

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

FC-ofF[0] out_format, FC--oformatF[0] out_format

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

FC-retF[0] value, FC--retF[0] value

number(s) of returns to include

FC-classF[0] number, FC--classF[0] 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)

FC-vF[0] level, FC--verboseF[0] level

verbose mode

Advanced options

FC-nbinF[0] value, FC--nbinF[0] value

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

FC-nodataF[0] value, FC--nodataF[0] value

nodata value to put in image if not valid

FC-coF[0] option, FC--coF[0] option

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

FC-ctF[0] filename, FC--ctF[0] filename

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