Does -kill Use 3D or 2D Distances?

[Spencer Floyd]

Hi,

I think I know the answer after some testing, but I'd like to know if the -kill parameter (specifically in blast2dem), uses 2D distances or 3D distances.

With geometric ground classification sometimes struggling with steep areas (often getting missed) I was hoping to use a small -kill value to identify these kind of areas that would show as voids in the resulting DEM. Paired with a slope raster and a certain slope threshold, hopefully these areas can be easily found.

Here is an example of the difference between 2D and 3D distances: 

If the -kill parameter isn't currently using 3D distances, is that something that could be added? 

Thanks in advance.

Spencer

[Jochen Rapidlasso]

Hi Spencer,

thank you very much for your suggestion. We have reviewed this situation. Yes, it is a 2D measurement. In las2dem_new, a new development, this can be implemented quite easily. In blast2dem, it is more complicated. Would it be helpful if we implemented this in las2dem_new?

Cheers,

Jochen @rapidlasso

[Spencer Floyd]

Hi Jochen,

Appreciate the reply.

Adding to las2dem_new would be helpful if it's not too much trouble.

Thanks,

Spencer

--
Download LAStools at
https://rapidlasso.de
Manage your settings at
https://groups.google.com/g/lastools/membership
---
You received this message because you are subscribed to the Google Groups "LAStools - efficient tools for LiDAR processing" group.
To unsubscribe from this group and stop receiving emails from it, send an email to lastools+u...@googlegroups.com.
To view this discussion visit https://groups.google.com/d/msgid/lastools/bce0c33a-17b7-4883-8e04-f5d0e03dac35n%40googlegroups.com.