[GRASS-dev] Re: [GRASS GIS] #542: grass7 vector libraries modifications

GRASS GIS trac at osgeo.org
Tue Sep 15 04:15:29 EDT 2009

#542: grass7 vector libraries modifications
  Reporter:  mmetz        |       Owner:  grass-dev at lists.osgeo.org
      Type:  enhancement  |      Status:  new                      
  Priority:  major        |   Milestone:  7.0.0                    
 Component:  Vector       |     Version:  svn-trunk                
Resolution:               |    Keywords:                           
  Platform:  All          |         Cpu:  All                      
Comment (by mmetz):

 Replying to [comment:3 martinl]:
 > Replying to [ticket:542 mmetz]:
 > > face (3D boundary, not yet implemented)[[BR]]
 > > edges (3D areas, not yet implemented)[[BR]]
 > Just very little note: shouldn't be
 >  * face 3D area
 > and
 >  * edge 3D boundary
 > ?
 You're right, yes. The documentation is a bit contradicting, e.g. in
 GRASS7 programmer's manual it says "Face and kernel are 3D equivalents of
 boundary and centroid...", but edge is commonly used as 2D/3D boundary
 (Vector network analysis, general graph theory). Thus for 3D we would have
 edges in the coor file, faces (3D areas) are going to be constructed from
 edges and volumes are going to be constructed from faces and kernels. Is
 this nomenclature ok?

 Markus M

Ticket URL: <https://trac.osgeo.org/grass/ticket/542#comment:4>
GRASS GIS <http://grass.osgeo.org>

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