[pdal] filter.range and dimensions with numerics in their name

[Bradley Chambers]

This appears to be a legitimate issue with the way we are parsing the
limits. I've filed a ticket at https://github.com/PDAL/PDAL/issues/1659.

On Wed, Aug 30, 2017 at 10:35 PM Carl Anderson <carl.anderson at vadose.org>
wrote:

> Hello list,
>
> I am having issues building a pipeline with
>
>     {
>       "type":"filters.normal",
>       "tag":"curvature_32",
>       "knn":"7"
>     },
>     {
>       "type":"filters.eigenvalues",
>       "tag":"eigen",
>       "knn":"6"
>     },
>     {
>       "type":"filters.range",
>       "tag":"postfilter",
>       "limits":"Eigenvalue0[0.0:6.5]",
>       "limits":"Curvature[0.0:0.04]"
>     },
>
> The pipeline fails with
> PDAL: filters.range: Invalid 'limits' option: 'Eigenvalue0[:6.5]': Missing
> '(' or '['.
>
> When I remove the dimension Eigenvalue0, the pipeline executes.
>
> Before digging into the source, is this likely to be a dimension name
> issue?
>
> TIA
>
> C.
>
> Carl Anderson
>
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