[Liblas-devel] las to tin conversion

Mike Grant mggr at pml.ac.uk
Wed May 26 07:26:14 EDT 2010


Hi Beka,

On 05/25/2010 03:58 PM, Bekbolat Zhaidarbayuli wrote:
> Does this mean that some of the points are considered to be both first
> and last?

I imagine where there is only a single return for a pulse, that single
return will be considered as both the first return and the last return.
  You're probably only eliminating points where there is more than one
return for a pulse.

As a rule of thumb, you tend to get something like 90% single returns,
9% 2 returns, 0.9% 3 returns, ...  Obviously this will vary based on the
terrain and the system.

Cheers,

Mike.

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