[pgpointcloud] RLE and SIGBITS heuristics

[Sandro Santilli]

On Wed, Apr 15, 2015 at 06:09:52PM +0200, Rémi Cura wrote:
> Here are some facts about pgpointcloud compression
> 
> 5.2 Billion las points (usual suspects):
> ratio 4.36 (compared to .las files)

How do you compute that ratio ? Is that LAS/PG size ?
How do you determine PG size ?

> The system can write from 1 Million to 0.2 Million pts/sec to a client,
> depending on the point type

How do you transfer those points to the client, in which format ?

> I'm in the process to measure compression/decompression time on those data
> I tried to get the best ratio (thanks to recent work of @strk on uint64_t)

Did you try pc_compress to manually tweak per-dimension compression yet ?

--strk;