Extended Classification Using lasoverlap

[Lukas Fraser]

Hi All,

I am trying to run lasoverlap on some LAS 1.4 files using only classes 40 and 64, but lastools does not seem to recognize classes that high.

lasoverlap -i *.las -files_are_flightlines -keep_class 40 -step 2 -max_diff 0.1 -no_over -last_only -otif

ERROR: cannot keep classification 40 because it is larger than 31

Do any of the extended classification commands work in lasoverlap?

Thanks, Lukas

[Martin Isenburg]

Hello Lukas,

until LAStools makes the new LAS 1.4 point types 6 to 10 it's new "base" point type we use the 'extended_' key word to access the wider attributes of the newer point types in LAStools. Hence simply use '-keep_extended_class 40' instead.

lasoverlap -i *.las ^
                -last_only ^

                -files_are_flightlines ^

                -keep_extended_class 40 64 ^

                -step 2 -max_diff 0.1 ^

                -no_over ^

                -o difference.tif

http://rapidlasso.com/lasoverlap

http://lastools.org/download/lasoverlap_README.txt

Regards,

Martin @rapidlasso

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