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<body>OK
<div align="left"> </div>
<div align="left">But what to send as empty when LWLINE or LWPOINT is wanted, not LWCOLLECTION.</div>
<div align="left">internally I mean. </div>
<div align="left">/Nicklas<br />
<br />
2009-11-22 Paul Ramsey wrote:<br />
<br />
No, bad idea. Empty geometries have a type. There's 'POLYGON EMPTY',<br />
>'LINESTRING EMPTY', etc, etc, etc.<br />
><br />
>P.<br />
><br />
>On Sat, Nov 21, 2009 at 2:04 PM, Nicklas Avén<br />
>
<nicklas.aven@jordogskog.no></nicklas.aven@jordogskog.no> wrote:<br />
>> is type 0 for LWGEOM occupied by anything or could it be an idea to use it<br />
>> for empty geometries.<br />
>> Then it would be easy to create any emtpy geometry. Like a generic empty<br />
>> geometry.<br />
>><br />
>> Or is there another way that I have missed.<br />
>><br />
>> When I have identified the empty geometries, in shortestline and it buddies<br />
>> I need to communicate that an empty geometry should be returned and the<br />
>> datatype is LWLINE and LWPOINT for st_closestpoint. I'm tempted to just make<br />
>> an LWGEOM with type 0. Is it a bad idea.<br />
>><br />
>> #define EMPTY 0<br />
>> #define POINTTYPE 1<br />
>> #define LINETYPE 2<br />
>> #define POLYGONTYPE 3<br />
>> and so on<br />
>><br />
>> /Nicklas<br />
>> _______________________________________________<br />
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>> postgis-devel@postgis.refractions.net<br />
>> http://postgis.refractions.net/mailman/listinfo/postgis-devel<br />
>><br />
>><br />
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