[postgis-users] MULTIPOINT

[Martin Davis]

Hmm....  I can see how it would be nice for migration issues to accept both syntaxes, but my gut feeling is that a library should be more righteous than that, and only accept the correct syntax.  Otherwise you risk letting people perpetuate the confusion for the rest of the millenium.  Too bad there's no way to deprecate the syntax a la Java, by giving them nasty messages if they use the wrong one.

I think we'll try and take the high road in JTS, and accept only the correct syntax.  As you say, the fact that nobody's noticed this so far indicates MULTIPOINT is rarely used, so hopefully it won't be a problem.

This isn't the only wart in the SFS, as you will know if you've been following the JTS newsgroup.  Someone there was pointing out the inconsistent use of LinearRing and LineString for polygon rings.  Not an out-an-out error like the WKT syntax, but still somewhat confusing.

Ah well - even spec writers are human.

Martin Davis, Senior Technical Specialist
Vivid Solutions Inc.
Suite #1A-2328 Government Street   Victoria, B.C.   V8T 5G5
Phone: (250) 385 6040    Fax: (250) 385 6046
EMail: mbdavis at vividsolutions.com  Web: www.vividsolutions.com


> -----Original Message-----
> From: Frank Warmerdam [mailto:warmerdam at pobox.com]
> Sent: Friday, October 25, 2002 8:44 AM
> To: postgis-users at postgis.refractions.net
> Subject: Re: [postgis-users] MULTIPOINT
> 
> 
> Martin Davis wrote:
>  > Thanks for the clarification, Frank.  We wondered about 
> this when we implemented JTS.
>  > We ended up basing our decision on what to support on what 
> some other implementations
>  > chose (IBM or Oracle, I think).  Unfortunately, they chose 
> the wrong one too...  So
>  > JTS is incorrect as well, at the moment.  We'll fix it to 
> emit the correct syntax in
>  > the next release.
> 
> Martin,
> 
> Note, I made OGR support both forms on ingest.  It might be 
> nice if others
> can do this too.
> 
> I suppose MULTIPOINT is rarely used, but it still seems 
> shocking to find
> these issues so far along.
> 
> 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
> 
> 
> 
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