NEW: LAStools Formula Solver
Silke Kämmerer
Hi all,
As of version 260716, formula support has been implemented in LAStools. It is now possible to filter input files using wildcards and formulas, or to filter / transform individual points during processing. Formulas enable significantly more complex operations than were previously possible with standard filter or transformation arguments.
Formulas can be specified directly via the command line for all tools. Formulas for file filtering are defined using the „-fileformula“ argument:
las2las64 -i *.laz -odir out -olaz -fileformula "keep=hdrPcnt>1000000"copies all files containing more than 1 million points to the output directory.
Formulas for point processing can be applied directly via transformation or filter functions:
lasgrid64 -i in.laz -o out.png -formula "keep=z>280.0;i=i*u"creates a raster file for all input pixels with a Z-value greater than 280, multiplying the intensity value by the value from the user byte.
Further information, additional examples, and the formula module reference can be found in the corresponding README file.
Thank you for using LAStools!
Cheers, Silke
_______________________________
Silke
Kämmerer | CEO
rapidlasso
GmbH
Friedrichshafener
Straße 1
82205
Gilching - Germany
www.rapidlasso.de / in...@rapidlasso.de
Shafaat Tahir
Great addition to LAStools! Formula support looks very useful, especially for more flexible point filtering and transformations without having to build separate preprocessing steps. The -fileformula capability for filtering files based on metadata is particularly handy for large LiDAR datasets. Thanks for sharing the examples and documentation!
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