[gdal-dev] OGR support for POINT ZM

[Even Rouault]

Selon Gottfried Mandlburger <gottfried.mandlburger at geo.tuwien.ac.at>:

> Dear GDAL/OGR team,
>
> I just realized that there is no support for the OGC "POINT ZM" geometry
> in GDAL/OGR. It is well possible to read in a 3D point with an
> additional attribute from the following OGC compliant WKT string...
>
> POINT ZM(1. 2. 3. 4.)
>
> ... but the attribute value (i.e. 4.) is silently ignored and not
> reflected in the OGRPoint data structure. Especially exporting the above
> contents back to WKT, results in...
>
> POINT(1. 2. 3.)
>
> Any plans to add POINT ZM support in GDAL in the near future?

Gottfried,

indeed a long standing wish that is listed in the nice-to-have features for GDAL
2.0 : http://trac.osgeo.org/gdal/wiki/GDAL20Changes. Something looking for
contributors or funding.

Best regards,

Even

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