[geos-devel] M-coordinate support

[Sean Gillies]

Hi Mike,

Would GEOS need to implement M coordinate basis algorithms to fully
profit from this? Do those exist? (I have no idea)

On Tue, Jul 10, 2012 at 5:41 AM, Mike Toews <mwtoews at gmail.com> wrote:
> Hi devs,
>
> I'd like to know if "measure" or M-coordinate support is somewhere on
> the development horizon for GEOS. I could see the benefit of opening
> client software to support ISO 19125 compliant geometries, such as in
> OGR or Shapely.
>
> Possibly the first widespread use of M-coordinates started in the
> 1990s with the Shapefile file format, as detailed in the 1998 ESRI
> technical specs. With open source software, Shapelib and PostGIS has
> supported M-coordinates for quite some time (possibly close to a
> decade?). More recently, Simple Features Access Standards published by
> OGC and later ISO 19125, detail the use and storage of of
> M-coordinates in various geometry types.
>
> Are there any limitations to adopting M-coordinate support for GEOS?
> Potential performance loss? Other limitations or incompatibilities?
> I'm curious, as I often run into instances where this dimension is
> useful, but am a bit stumped at it's lack of support in some software.
> Thanks.
>
> -Mike
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-- 
Sean Gillies