[pdal] [pgpointcloud] ply and laz

[Rémi Cura]

Hey,
I also use RPly,
the precision is limited in ascii output,
but nowhere near 3 digits.
It's an easy tweak to the C code to change output precision
Cheers,
Rémi C

2015-09-25 21:29 GMT+02:00 <Dean.Hand.ctr at nga.mil>:

> Classification: UNCLASSIFIED
> ======================================================
>
> We are using PDAL.  There is a writers.ply, but did doesn't say what
> readers it will support.  We are using something similar to this xml:
>
> <?xml version="1.0" encoding="utf-8"?>
> <Pipeline version="1.0"><Pipeline version="1.0">
>   <Writer type="writers.ply">
>     <Option name="filename">outputfile.ply</Option>
>     <Option name="storage_mode">little endian</Option>
>     <Reader type="readers.pgpointcloud">
>       <Option name="connection">dbname='lidar' user='user'</Option>
>       <Option name="table">lidar</Option>
>       <Option name="column">pa</Option>
>       <Option name="spatialreference">EPSG:26910</Option>
>       <Option name="where">
>         PC_Intersects(pa, ST_MakeEnvelope(560037.36, 5114846.45,
> 562667.31, 5118943.24, 26910))
>       </Option>
>     </Reader>
>   </Writer>
> </Pipeline>
>
> -----Original Message-----
> From: Howard Butler [mailto:howard at hobu.co]
> Sent: Friday, September 25, 2015 2:21 PM
> To: Hand Dean NGA-II USA CTR
> Cc: pgpointcloud at lists.osgeo.org; pdal
> Subject: Re: [pgpointcloud] ply and laz
>
>
> > On Sep 25, 2015, at 2:04 PM, Dean.Hand.ctr at nga.mil wrote:
> >
> > Classification: UNCLASSIFIED
> > ======================================================
> >
> > Hi Howard,
> >
> > When trying to pgpointcloud to write as either a ply we're experiencing
> an issue.  For ply files, the x and y coordinates are only 3 digits in
> length. I don't see anything in our docs to explain this...
> >
> > Can you please help?
>
> I don't think pgpointcloud supports writing natively as ply? Are you using
> PDAL?
>
> If so:
>
> * What do you mean by "digits"? Do you mean digits after the decimal point?
> * What was original source data format before it went into pgpointcloud?
> LAS
> * It is possible that the PDAL ply driver could be modified to support
> overriding the output precision, but some investigation would need to be
> done into the rply code that PDAL uses to read/write PLY. Quickly looking
> at the PDAL source. this feature doesn't appear to exist yet.
>
> Howard
>
>
> ======================================================
> Classification: UNCLASSIFIED
>
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