[gdal-dev] The 2.5D geometry proposal

[Oyvind Idland]

On Thu, Sep 16, 2010 at 4:08 PM, Frank Warmerdam <warmerdam at pobox.com> wrote:
> Oyvind Idland wrote:
>>
>> Hi Ralf,
>>
>> full 3D/volumetric objects was not what I was refering to. I mean
>> "2.5D", simple features
>> with Z (and M) ordinates.
>>
>> If I understand correct, this is what Adam is refering to in his proposal.
>>
>> SQL/MM do specify Z and M geometries (plus circular geometries).
>
> ...
>
>>> Am Donnerstag 16 September 2010 14:03:09 schrieb Oyvind Idland:
>>>>
>>>> Hello,
>>>>
>>>> been taking a look at "Adam's 2.5D simple features proposal" at the OGR
>>>>  website.
>
> Oyvind,
>
> I would note that Adam's proposal was from around the year 2000 and was used
> in OGR for many years until OGC/ISO decided to use different codes for 2.5D
> in WKB despite the fact that Adam's proposal had been adopted by OGC.
>
> There has been some effort to support the new numbering scheme but I'm not
> exactly sure what OGR produces by default not.
>
> Best regards,
> --
> ---------------------------------------+--------------------------------------
> I set the clouds in motion - turn up   | Frank Warmerdam,
> warmerdam at pobox.com
> light and sound - activate the windows | http://pobox.com/~warmerdam
> and watch the world go round - Rush    | Geospatial Programmer for Rent
>
>

Ok, thanks, that makes sense.

Seems like OGC/ISO chose a somewhat different encoding though.


-- Oyvind