[postgis-users] Intersection ion 0.7.4 ???

Alexander Pucher pucher at atlas.gis.univie.ac.at
Thu Mar 20 14:19:00 PST 2003


Paul,

can you give me a careful estimation on when these functions will be 
available in the CVS.

alex


Paul Ramsey wrote:

> Right, patience!
> I added the OGC test files in anticipation of having all the 
> functions. We are getting closer to having those functions in GEOS, 
> and having GEOS integrated into PostGIS, but we are not there yet. Soon!
> Paul
>
> On Thursday, March 20, 2003, at 05:00 AM, Alexander Pucher wrote:
>
>> Hi,
>>
>> I just had a look at the OGC example in the 0.7.4 source tree. In 
>> file '2-queries.sql', various tests for new GIS functions are 
>> mentioned, among them INTERSECTION.
>> I set up a new database, filled it with data and tried the following:
>>
>> SELECT Intersection(nuec_l0.the_geom, road.the_geom) FROM nuec_l0,road;
>>
>>
>> but got the following error:
>>
>> Error - /usr/local/httpd/htdocs/php/phpPgAdmin/sql.php -- Line: 112
>> PostgreSQL said: ERROR: Function 'intersection(geometry, geometry)' 
>> does not
>> exist Unable to identify a function that satisfies the given argument 
>> types
>> You may need to add explicit typecasts
>> Your query:
>> SELECT Intersection(nuec_l0.the_geom, road.the_geom)
>> FROM nuec_l0,road
>>
>>
>>
>> So my question is:
>> Is this my fault (i.e. wrong query syntax) or is this function (as 
>> well as the others mentioned in the test file) not yet included in 
>> PostGIS?
>>
>> Best regards,
>> alex
>>
>> -- 
>> ________________________________________________________
>>
>> Institut fuer Geographie und Regionalforschung
>> Universitaet Wien
>> Kartografie und Geoinformation
>>
>> Departement of Geography and Regional Research
>> University of Vienna
>> Cartography and GIS
>>
>> Universitaetstr. 7, A-1010 Wien, AUSTRIA
>>
>> Tel: (+43 1) 4277 48644
>> Fax: (+43 1) 4277 48649
>> E-mail: alexander.pucher at univie.ac.at
>>
>> FTP: ftp://ftp.gis.univie.ac.at
>> WWW: http://www.gis.univie.ac.at/karto
>> --------------------------------------------------------
>> Virtual Map Forum: http://www.gis.univie.ac.at/vmf
>> --------------------------------------------------------
>> It's not that I'm afraid to die, I just don't want to be there when 
>> it happens -- Woody Allen
>>
>>
>>
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>
>
>
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-- 
________________________________________________________

Institut fuer Geographie und Regionalforschung
Universitaet Wien
Kartografie und Geoinformation

Departement of Geography and Regional Research
University of Vienna
Cartography and GIS

Universitaetstr. 7, A-1010 Wien, AUSTRIA

Tel: (+43 1) 4277 48644
Fax: (+43 1) 4277 48649
E-mail: alexander.pucher at univie.ac.at

FTP: ftp://ftp.gis.univie.ac.at
WWW: http://www.gis.univie.ac.at/karto
--------------------------------------------------------
Virtual Map Forum: http://www.gis.univie.ac.at/vmf
--------------------------------------------------------
It's not that I'm afraid to die, 
I just don't want to be there when it happens -- Woody Allen





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