[pdal] Merging buffered tiles

[Howard Butler]

> On May 3, 2018, at 10:49 AM, Eric Robeck <erobeck at gmail.com> wrote:
> 
> Howard,
> 
> Yes, the parentheses crept in early while I tried to keep track of the various parameter combinations used for my bare earth simulations, but they caused headaches later on...
> 
> As an update, I ran a slightly modified version of the same pipeline (sample tile geometries, different source files) and got no errors. This time the input files were in LAZ format and they were not reprojected. Another factor could be that the first set were generated by the old(ish) MCC-LIDAR application, and the latter by Isenburg's lasground.exe.

That fact pattern would seem to confirm my hunch. This srs stuff is definitely a topic we could improve.

Howard