[GRASS-dev] [GRASS GIS] #1498: patch proposal: new option for v.category to copy category values from one layer to another

[GRASS GIS]

#1498: patch proposal: new option for v.category to copy category values from one
layer to another
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 Reporter:  mlennert     |       Owner:  grass-dev@…              
     Type:  enhancement  |      Status:  new                      
 Priority:  normal       |   Milestone:  7.0.0                    
Component:  Vector       |     Version:  unspecified              
 Keywords:  v.category   |    Platform:  Unspecified              
      Cpu:  Unspecified  |  
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 In the attached patch againts trunk I propose an implementation of a
 feature in v.category requested regularly in the mailing lists: copying
 category values from one layer to another.

 I don't think that it is a very invasive addition, but someone should
 probably check before we apply this to trunk. It could possibly also go
 into 6.5 as it doesn't break backwards compatibility.

 I used the word 'transfer' for this option as the way the parser works I
 needed a word with a different first letter than the others, and 'c'(opy)
 was already taken by 'c'(hlayer).

 On thing I did not put in is a way how to work with type=area. I just exit
 with a message proposing to use type=centroid to copy category values for
 areas. If someone wants to implement the same with type=area working,
 please do so.

 Moritz

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Ticket URL: <http://trac.osgeo.org/grass/ticket/1498>
GRASS GIS <http://grass.osgeo.org>