[postgis-users] Intersection doesn't work on some data

Paul Ramsey pramsey at refractions.net
Wed Mar 24 12:10:32 PST 2004


And what platform are you running on?

strk wrote:
> This is what I get with postgis-CVS:
> 
> SRID=-1;MULTILINESTRING((-121.33193 41.18388,-121.34693 41.18388),
> (-121.34693 41.18388,-121.36293 41.18388),(-121.36293 41.18388,
> -121.36545 41.18388),(-121.36545 41.18388,-121.37179 41.18388),
> (-121.37179 41.18388,-121.37608 41.18402),(-121.37608
> 41.18402,-121.44594 41.18385))
> 
> This is what you reported as the correct answer:
> 
> MULTILINESTRING ((-121.331929 41.18388, -121.34693 41.18388),
> (-121.34693 41.18388, -121.36293 41.18388), (-121.36293 41.18388,
> -121.36544 41.18388), (-121.36544 41.18388, -121.37179 41.18388),
> (-121.37179 41.18388, -121.37608 41.18401), (-121.37608
> 41.184019, -121.44593 41.18384))
> 
> There is a 0.00001 displacement, but I think the bug you reported 
> has already been fixed. What version of postgis are you running ?
> 
> --strk;
> 
> On Wed, Mar 24, 2004 at 07:02:20PM +0100, strk wrote:
> 
>>On Wed, Mar 24, 2004 at 09:40:28AM -0800, David Blasby wrote:
>>
>>>David,
>>>
>>>Thanks for your excellent bug report - it should be "easy" to track down 
>>>whats causing this problem given all your information.
>>>
>>>Its almost certainly involving the conversion between postgis and GEOS - 
>>>this usually occurs if there's a missed byte somewhere.
>>>
>>>Unfortunately, I dont have time to look at this until the beginning of 
>>>April - perhaps strk could?
>>>
>>>dave
>>
>>Yes. I'll take this.
>>
>>--strk;
>>_______________________________________________
>>postgis-users mailing list
>>postgis-users at postgis.refractions.net
>>http://postgis.refractions.net/mailman/listinfo/postgis-users
> 
> _______________________________________________
> postgis-users mailing list
> postgis-users at postgis.refractions.net
> http://postgis.refractions.net/mailman/listinfo/postgis-users


-- 
       __
      /
      | Paul Ramsey
      | Refractions Research
      | Email: pramsey at refractions.net
      | Phone: (250) 885-0632
      \_




More information about the postgis-users mailing list