[postgis-devel] short question

[Nicklas Avén]

OK But what to send as empty when LWLINE or LWPOINT is wanted, not LWCOLLECTION.internally I mean. /Nicklas

2009-11-22 Paul Ramsey wrote:

No, bad idea. Empty geometries have a type. There's 'POLYGON EMPTY',
>'LINESTRING EMPTY', etc, etc, etc.
>
>P.
>
>On Sat, Nov 21, 2009 at 2:04 PM, Nicklas Avén
> wrote:
>> is type 0 for LWGEOM occupied by anything or could it be an idea to use it
>> for empty geometries.
>> Then it would be easy to create any emtpy geometry. Like a generic empty
>> geometry.
>>
>> Or is there another way that I have missed.
>>
>> When I have identified the empty geometries, in shortestline and it buddies
>> I need to communicate that an empty geometry should be returned and the
>> datatype is LWLINE and LWPOINT for st_closestpoint. I'm tempted to just make
>> an LWGEOM with type 0. Is it a bad idea.
>>
>> #define EMPTY 0
>> #define POINTTYPE 1
>> #define LINETYPE 2
>> #define POLYGONTYPE 3
>> and so on
>>
>> /Nicklas
>> _______________________________________________
>> 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
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.osgeo.org/pipermail/postgis-devel/attachments/20091122/cf4228c1/attachment.html>