[pdal] Simple ply / decimate pipeline not streaming

[Tom Jakubowski]

Hi,

I am new to pdal (using Docker's pdal/pdal:1.8, specifically
pdal/pdal at sha256:12d0b90af6d2056467cff77509ba44878661a12217819c8af1eb91b3fda490e2).
I've tried a very simple pipeline (attached) which, from my reading of the
documentation, should support streaming: it reads from a .PLY file, uses
the decimation filter with a "step" of 8, and writes to another .PLY file.

https://pdal.io/stages/readers.ply.html
https://pdal.io/stages/writers.ply.html
https://pdal.io/stages/filters.decimation.html

All three stages say they support streaming operations.

However, when I run the pipeline, the process runs out of memory, and
validating the pipeline shows it is not streaming:

{
   "error_detail" : "",
   "streamable" : false,
   "valid" : true
}

What am I missing? Is there a way to further debug this (e.g. identify
which part of the pipeline inhibits streaming)? Would anyone care to
enlighten me?

Thank you,

Tom
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.osgeo.org/pipermail/pdal/attachments/20190116/be37131a/attachment.html>