[GRASS-dev] [GRASS GIS] #2102: Digitize doesn't delete records in the attribute table when merging features.

[GRASS GIS]

#2102: Digitize doesn't delete records in the attribute table when merging
features.
--------------------------+-------------------------
  Reporter:  hcho         |      Owner:  grass-dev@…
      Type:  defect       |     Status:  new
  Priority:  major        |  Milestone:  7.0.0
 Component:  wxGUI        |    Version:  svn-trunk
Resolution:               |   Keywords:  digitizer
       CPU:  Unspecified  |   Platform:  Unspecified
--------------------------+-------------------------

Comment (by mlennert):

 Replying to [ticket:2102 hcho]:
 > I'm not sure if this is an intended behavior of the vector digitizer. I
 had 130 features in a vector map and digitized to delete and merge some
 features into one. After all this, I expected only one record in the
 attribute table, but I still had the 130 (pg driver). Merging multiple
 features didn't ask me which record to assign to the new feature, so it
 kind of makes sense that the digitizer didn't do anything to the attribute
 table because it doesn't know which one to take. Am I supposed to manually
 manipulate the attribute table?
 >

 I'm not sure this really is a bug. How could GRASS know which attributes
 should be kept and which not ? It might be that all attributes are
 actually important, even if in a specific map some cat values are not
 present. This is a legacy of the cat value as the only attribute in the
 old vector formats. I would guess that most people don't use this approach
 much, but some might, so I wouldn't change this.

 I propose to close this bug as invalid.

--
Ticket URL: <https://trac.osgeo.org/grass/ticket/2102#comment:2>
GRASS GIS <https://grass.osgeo.org>