[pdal] wrong classflags after crop

[Andrew Bell]

Do you get the same behavior without the crop fitter in the pipeline?

On Tue, Jul 16, 2019, 11:37 AM Csaba Sandor <sandor.csaba at gmail.com> wrote:

> Dear List,
>
> I'm trying to crop a point cloud in laz format with a polygon in pdal
> 1.8.0.
>
> In the result I get some "withheld" and "keypoint" classified points which
> were not classified as such in the original laz.
>
> Any idea on why can this happen?
>
> Tried to search for solution but I'm a very beginner in the pointcloud
> world and maybe I'm missing the proper keywords.
>
> This is my pipeline:
>
> {
>   "pipeline":[
>     {
>       "type":"readers.las",
>       "filename":"43-233_dfm_2018.laz",
>       "spatialreference":"epsg:23700"
>     },
>     {
>       "type":"filters.crop",
>       "polygon":"Polygon ((...))"
>     },
>     {
>       "type":"writers.las",
>       "filename":"cut_43-233_dfm_2018.laz",
>       "forward": "major_version, minor_version, dataformat_id,
> filesource_id, global_encoding, project_id, system_id, software_id,
> creation_doy, creation_year, scale_x, scale_y, scale_z, offset_x, offset_y,
> offset_z"
>
>     }
>   ]
> }
>
> Original and cropped file:
> https://nas.fototerkep.hu:8000/share.cgi?ssid=0YEW1W4
>
> Thank you very much for any hint!
> Csaba
>
>
> Sándor Csaba
> Tel: +3630/9605853
> Fax: +3617002542
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