[postgis-devel] EWKB proposal for OGC

[Paul Ramsey]

Martin,
What do you think of the proposal as it stands? If we write and format 
it up do you think we could put it before the April meeting?
Paul

strk at refractions.net wrote:

> On Tue, Dec 28, 2004 at 01:45:09AM +0900, Paul Selormey wrote:
> 
>>Unfortunately, the 99-402r2 is not yet available to some of us
>>the non-OGC members, and therefore commenting on these extensions
>>may not be right.
> 
> 
> Martin Daly sent that document as an attachent on this list:
> http://postgis.refractions.net/pipermail/postgis-devel/2004-December/000695.html
> 
> 
>>I have just these:
>>1. You have used "misure" in the documents, do you mean "measure"?
> 
> 
> Yes, corrected.
> 
> 
>>2. I wish the presence of the SRID in the geometry WKT is a suffix, since
>>   it can be considered optional and should not break existing codes:
>>   "POINT(1 2);SRID=4326"
> 
> 
> It *is* optional (meaning undefined SRID, -1 for postgis).
> Would existing code work with POINTM(1 2 3) or POINT(1 2 3 4) ?
> Also, EWKB will also probably break existing code, any existing
> case of compatibility ?
> 
> 
>>BTW, any plan to define WTK for triangle, rectangle, circle and other
>>geometries defined in GML 3.x?
> 
> 
> Not that I'm aware of.
> --strk;
> 
> 
>>Best regards,
>>Paul.
>>
>>----- Original Message ----- 
>>From: <strk at refractions.net>
>>To: "PostGIS Development Discussion" <postgis-devel at postgis.refractions.net>
>>Cc: "Paul Ramsey" <pramsey at refractions.net>
>>Sent: Monday, December 27, 2004 9:01 PM
>>Subject: [postgis-devel] EWKB proposal for OGC
>>
>>
>>
>>>As suggested by Martin Daly I've made a draft proposal for ZM and
>>>SRID inclusion in WKB and WKT.
>>>
>>>Differently to the Z-Geometry proposal I did not specify semantic
>>>of the M values, as I don't see any "standardizable" behaviour
>>>for them. For example, M(isures) could represent temperature
>>>(linear interpolation meaningful) as well as time (meaningless
>>>linear interpolation).
>>>
>>>Draft attached, comments expected.
>>>
>>>--strk;
>>>
>>
>>
>>--------------------------------------------------------------------------------
>>
>>
>>
>>>_______________________________________________
>>>postgis-devel mailing list
>>>postgis-devel at postgis.refractions.net
>>>http://postgis.refractions.net/mailman/listinfo/postgis-devel
>>>
>>
>>
>>_______________________________________________
>>postgis-devel mailing list
>>postgis-devel at postgis.refractions.net
>>http://postgis.refractions.net/mailman/listinfo/postgis-devel
> 
>