[postgis-users] St_LineToCurve error, geometry requires more points

[Mark Cave-Ayland]

Davide Ticozzi wrote:

> Hi everyone,
> 
> I'm encured in a very strange issue.
> 
> 
> This select give me an "geometry requires more points" error for a
> specific geometry:
> select st_linetocurve(the_geom) from covers where id_cover=2787;
> 
> but not this:
> select st_linetocurve(geomfromtext(astext(the_geom))) from covers where
> id_cover=2787;
> 
> Why?

Hi Davide,

Possibly its due to a rounding error introduced from the conversion from 
binary to text and back to binary again? I haven't time to look at this 
at the moment, however you can get some good debug information out of 
PostGIS 1.4 if you wish to trace through it yourself.


HTH,

Mark.

-- 
Mark Cave-Ayland - Senior Technical Architect
PostgreSQL - PostGIS
Sirius Corporation plc - control through freedom
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