[GRASS-user] v.lidar.edgedetection very slow

Hamish hamish_b at yahoo.com
Fri Jun 19 22:57:44 EDT 2009

John wrote:
> p252 of 3rd edition '#build topology so that we can use all
> vector tools'.

.... that should probably read "most modules". The vector modules which
deal with huge LIDAR datasets have been specially modified to work with
no topology to avoid the finite per-point memory overheads.

> However, the method on p256-257 does not
> mention db or topology. Also, when I have tried to run
> v.oultier without db/topology it says it cannot as there is
> no database.  I will look at this again later. Maybe I
> am not selecting 3D when I have tried without db etc.



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