[postgis-users] ST_<function> vs <function>

[Stephen Woodbridge]

This is all I could find:

Log:
Added versions of functions with standard ST (Spatial Type) prefixes to 
any functions that were lacking them.  Updated the regression tests to 
include the new functions.


Richard Greenwood wrote:
> I'm embarrassed to ask, but what does "ST" stand for?
> 
> Rich
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> On 9/10/07, Obe, Regina <robe.dnd at cityofboston.gov> wrote:
>>
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>> Steve,
>>
>> Just to add to what Mark said.  There is a little bit more going on than
>> simply a renaming.
>>
>> Most if not all of the ST relation functions have automatic index use
>> enabled in them.
>>
>> For example
>>
>> the old within is really closer to the hidden _ST_Within  and the new
>> ST_Within function is equivalent to writing the old
>>
>> geom1 && geom2 AND Within(geom1, geom2)
>>
>> Same goes for ST_Contains, ST_Overlap etc.
>>
>> Hope that helps,
>> Regina
>>
>>  ________________________________
>>  From: postgis-users-bounces at postgis.refractions.net on
>> behalf of Mark Cave-Ayland
>> Sent: Sun 9/9/2007 4:30 PM
>> To: PostGIS Users Discussion
>> Subject: Re: [postgis-users] ST_<function> vs <function>
>>
>>
>>
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>> On Sun, 2007-09-09 at 16:03 -0400, Stephen Woodbridge wrote:
>>> Hi all,
>>>
>>> I seem to have missed reading some vital post or something.
>>>
>>> What is the difference between ST_<function>() and <function>()?
>>> Is this just a renaming for namespace issues?
>>> Are the <function>() names deprecated?
>>> Are there other benefits to this renaming?
>>>
>>> Please explain or point me to the relevant docs.
>>>
>>> Thanks,
>>>    -Steve
>>
>> Hi Stephen,
>>
>> I don't remember there being much discussion about this, but the
>> relevant commit can be found here:
>> http://postgis.refractions.net/pipermail/postgis-commits/2007-June/000074.html.
>> In short, the old function names are deprecated, and new applications should
>> start to use the ST_ prefix functions instead.
>>
>>
>> ATB,
>>
>> Mark.
>>
>> --
>> ILande - Open Source Consultancy
>> http://www.ilande.co.uk
>>
>>
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