[pgpointcloud] RLE and SIGBITS heuristics

[Howard Butler]

We just haven’t tried, because we tried to be very simple at first. I suspect there is good gain to get, especially if you’re spatially sorting the data before/as you compress it. 

> On Apr 15, 2015, at 10:20 AM, Paul Ramsey <pramsey at cleverelephant.ca> wrote:
> 
> Is there not enough gain in doing XYZ together to bother w/?
> 
> 
> -- 
> Paul Ramsey
> http://cleverelephant.ca
> http://postgis.net
> 
> On April 15, 2015 at 5:20:12 PM, Howard Butler (howard at hobu.co) wrote:
> 
>> 
>> > On Apr 15, 2015, at 10:08 AM, Paul Ramsey <pramsey at cleverelephant.ca> wrote: 
>> >  
>> > Does LazPerf have configurability to tell it to bind dimensions together or is it strictly by dimension ATM? 
>> 
>> It has the ability to bind dimensions together (this is an xyz unit, this is a las::point0, etc), but we don’t do that for the database compression stuff we’re doing in PDAL because it would mean assuming things about the data. We could probably get away with that for xyz, but not so much after that. 
>> 
>> Howard