[postgis-devel] Should EMPTY be spatially equal to self ?

Sandro Santilli strk at keybit.net
Fri Jan 13 08:20:12 PST 2012


On Fri, Jan 13, 2012 at 09:53:31AM +0100, Sandro Santilli wrote:
> On Thu, Jan 12, 2012 at 07:09:22PM -0500, Paragon Corporation wrote:

> > If you started with 1.4 your ~= meant bounding box equality
> > If you started with a version prior to 1.4 and upgraded to 1.4+, your ~=
> > meant geometric equality
> 
> Well, now we are moving to 2.0 so a dump/reload is required and we can feel
> free to assume the operator will be for everyone the way we'll set it to be.
> 
> I think keeping ~= for bounding box equality is fine.
> It's even mnemonically useful: "about equal".

Regina: I've seen your commit removing documentation of ~=.

Why so ? I've unleashed the operator use of GiST index this morning
making the documentation you removed perfectly match the current code...

--strk; 

  ()   Free GIS & Flash consultant/developer
  /\   http://strk.keybit.net/services.html



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