Filter an extra byte with las2las

Dave Munge

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Nov 15, 2022, 2:04:27 AM11/15/22

to LAStools - efficient tools for LiDAR processing

Hello,

I have laz tiles that contain the height information from ground level in an Extra byte. You can see it like this in lasInfo:

" Extra Byte Descriptions
data type: 4 (short), name "height above ground", description: "vertical point to TIN distance", scale: 0.01, offset: 250
LASzip compression (version 3.4r3 c2 50000): POINT10 2 GPSTIME11 2 BYTE 2"

I would like to make a filter according to the height contained in this extabyte with las2las. Is it possible ?

Thanks !

Jochen Rapidlasso

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Nov 15, 2022, 2:11:38 AM11/15/22

to LAStools - efficient tools for LiDAR processing

Hi Dave,

did you have a look at las2las_README.md?

There is a whole chapter

### Extra byte

There are nice parameters like "drop_attribute_between" and much more.

Best regards,

Jochen @rapidlasso

Dave Munge

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Nov 15, 2022, 9:01:52 AM11/15/22

to LAStools - efficient tools for LiDAR processing

Oh, thank you!

Sorry I hadn't looked at the readme lately and it has been improved since.

Thanks again

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