[GRASS-dev] [GRASS GIS] #1845: v.buffer: strange result for lines

[GRASS GIS]

#1845: v.buffer: strange result for lines
-----------------------------+----------------------------------------------
 Reporter:  martinl          |       Owner:  grass-dev@…              
     Type:  defect           |      Status:  new                      
 Priority:  critical         |   Milestone:  7.0.0                    
Component:  Vector           |     Version:  svn-trunk                
 Keywords:  v.buffer, lines  |    Platform:  Linux                    
      Cpu:  x86-64           |  
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Changes (by martinl):

  * priority:  normal => critical


Old description:

> Sample data attached: attachment:silnice.txt
>
> Buffer 1000m - OK (attachment:vector_1000.png)
>
> {{{
> v.buffer input=silnice output=silnice1000 distance=1000
> }}}
>
> Buffer 100m (using GEOS) - surprisingly wrong
> (attachment:vector_100_geos.png)
>
> {{{
> v.buffer input=silnice output=silnice100 distance=100
> }}}
>
> Buffer 100m (using GRASS) - wrong - not surprisingly
> (attachment:vector_100_grass.png)
>
> {{{
> export GRASS_VECTOR_BUFFER=1
> v.buffer input=silnice output=silnice100 distance=100
> }}}

New description:

 Sample data attached: attachment:silnice.txt

 Buffer 1000m - OK (attachment:v_buffer_1000.png)

 {{{
 v.buffer input=silnice output=silnice1000 distance=1000
 }}}

 Buffer 100m (using GEOS) - surprisingly wrong
 (attachment:v_buffer_100_geos.png)

 {{{
 v.buffer input=silnice output=silnice100 distance=100
 }}}

 Buffer 100m (using GRASS) - wrong - not surprisingly
 (attachment:v_buffer_100_grass.png)

 {{{
 export GRASS_VECTOR_BUFFER=1
 v.buffer input=silnice output=silnice100 distance=100
 }}}

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Ticket URL: <http://trac.osgeo.org/grass/ticket/1845#comment:1>
GRASS GIS <http://grass.osgeo.org>