Opened 9 years ago

Closed 9 years ago

#546 closed defect (wontfix)

Error doing a Buffer

Reported by: aperi2007 Owned by: pramsey
Priority: medium Milestone: PostGIS 1.5.3
Component: postgis Version: 1.5.X
Keywords: Cc:

Description

With this query

select

1 as id,

ST_Buffer(ST_GeomFromText('MULTILINESTRING( (1676339.95971128 4847443.67952346, 1676340.19 4847443.54, 1676338.44 4847440.65, 1676335.37 4847442.52, 1676337.12 4847445.4, 1676339.95971128 4847443.67952346)

)'),1) as geom;

The buffer polygon create is wrong. It create a little secondary portion of polygon around a vertex.

I use the Postgis 1.5.1 under windows . The Geos version is 3.2.0-CAPI-1.6.0

Attachments (1)

screenshot_01.png (28.2 KB) - added by pramsey 9 years ago.
good and bad

Download all attachments as: .zip

Change History (4)

comment:1 Changed 9 years ago by aperi2007

I tested with Geos 3.2.2 the bug is still here.

I report this to Geos ML.

Changed 9 years ago by pramsey

Attachment: screenshot_01.png added

good and bad

comment:2 Changed 9 years ago by pramsey

Attachment shows good buffer from JTS (blue) and bad one from GEOS (red).

comment:3 Changed 9 years ago by pramsey

Resolution: wontfix
Status: newclosed

Properly reported to GEOS, closing this one out.

http://trac.osgeo.org/geos/ticket/356

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