[postgis-devel] assumptions of &&& operator for missing dimensions

[Sandro Santilli]

On Tue, Feb 24, 2015 at 05:06:34PM +0100, Rémi Cura wrote:
> 2015-02-24 17:05 GMT+01:00 Sandro Santilli <strk at keybit.net>:

> > How about overlap then ? Should they overlap or not ?
> >
> >  'POINT Z (0 0 10)' &&& 'POINT (0 0)'
> >
> > That's were we started, original question was,
> > which one do you prefer:
> >
> >     1. Missing dimension is unknown, return NULL
> >     2. Missing dimension is infinite, overlaps everything
> >     3. Missing dimension is empty, overlaps nothing
> >     4. An impossible comparison was requested, raise exception
>
>
> Clearly 2 for me !

So do you also agree with ST_3DDistance('POINT Z (0 0 10)', 'POINT (0 0)')
returning 0 instead of 10 as done now ?

--strk;

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