[GRASS-dev] [GRASS GIS] #1933: v.overlay ends with sigsegv in cut lines by polygon

[GRASS GIS]

#1933: v.overlay ends with sigsegv in cut lines by polygon
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  Reporter:  mapycz   |       Owner:  grass-dev@…              
      Type:  defect   |      Status:  reopened                 
  Priority:  blocker  |   Milestone:  7.0.0                    
 Component:  Vector   |     Version:  svn-trunk                
Resolution:           |    Keywords:  v.overlay                
  Platform:  Linux    |         Cpu:  x86-64                   
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Comment(by mmetz):

 Replying to [comment:12 mapycz]:
 > we discover that problem appear only  if we generate contours from dem ,
 than smooth it and than v.overlay .

 OK. The contours are 3D, the polygon is 2D, that causes problems for the
 clipping.

 > Everything work if smoothed contour was saved to shapefile and then read
 from it and then clipping

 You can also transform contour z values to zero with v.transform zscale=0,
 then v.overlay.

 You could create a new ticket for the 3D lines clipping problem.

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Ticket URL: <http://trac.osgeo.org/grass/ticket/1933#comment:13>
GRASS GIS <http://grass.osgeo.org>