[pdal] Fixing the topology of the hexagon coverage from density

[Andrew Bell]

You should be able to do this by passing the precision argument to the
hexbin filter.  For example: `--filters.hexbin.density=5`.

If this doesn't work, please let me know.

On Thu, Dec 12, 2019 at 3:26 AM Jukka Rahkonen <jukka.rahkonen at latuviitta.fi>
wrote:

> Hi,
>
> I noticed that the vertices of the hexagon cells that "pdal density"
> writes out do not match exactly. It means that it is not easy to union
> the output into one polygon with GIS tools. The issue can be fixed by
> reducing the precision of coordinates with the PostGIS ST_Snap or
> similar tool. With a projected CRS it was enough to round the
> coordinates into 5 decimal places. It might be good to have a coordinate
> rounding option directly in the density tool.
>
> -Jukka Rahkonen-
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-- 
Andrew Bell
andrew.bell.ia at gmail.com
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