[pdal] Reprojection help

[Howard Butler]

I suspect you also need to install the proj-datumgrid package for conda

> conda install -c conda-forge proj-datumgrid-oceania proj-datumgrid-world

This should get you the grid shift files that OSGeo4W packages for you.
Please file a ticket in the PDAL repository on this topic. We need to
update our documentation to note this item if users expect to do any
geodetic shift operations.

Howard
<https://github.com/OSGeo/proj-datumgrid>

On Tue, Oct 8, 2019 at 9:17 PM Rebecca Clarke <rebecca at clarke.net.nz> wrote:

> Hi fellow PDAL'ers
>
> So after my post last week about OSGeo4W I reverted to Conda and I'm no
> longer getting the results I was getting in OSGeo4W. I would love some help
> troubleshooting as I feel like I'm overlooking something but not sure what.
>
> I am doing a reprojection on a las file. When I run this command in the
> pdal version i have in OSGeo4W a file is created and the Z values have been
> correctly reprojected. When I run the exact same command in the conda
> environment, I get a file with data in it, but there has been no
> change/shift to the Z value.
>
> OSGeo4W pdal version is 1.8.0
> Conda pdal version is 2.0.1
>
> This is the command:
>
> pdal pipeline "C:/Rebecca/las/pipeline.json"
> --readers.las.filename="C:/Rebecca/las/BD38_5k_0201.las"
> --writers.las.filename="C:/Rebecca/las/BD38_5k_0201_NZVD2016.las"
> --filters.reprojection.out_srs="+init=EPSG:2193
> +geoidgrids=C:/Rebecca/las/moturiki-1953-to-nzvd2016-conversion.gtx"
>
> This is the contents of pipeline.json:
>
> {
>     "pipeline" :
>     [
>         {
>             "type":"readers.las",
>             "filename":"#"
>         },
>         {
>             "type":"filters.reprojection",
>             "in_srs":"EPSG:2193",
>             "out_srs":"EPSG:2193"
>         },
>         {
>             "type":"writers.las",
>             "filename":"#",
>             "a_srs":"EPSG:2193",
>             "forward":"all"
>         }
>     ]
> }
>
>
> These are the packages which I installed in the conda environment after
> creation: pdal, python-pdal, gdal
>
> Would love any help.
>
> Thanks in advance.
>
> Rebecca
>
>
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