[GRASS-dev] [GRASS GIS] #2092: v.category option=del doesn't delete any categories

[GRASS GIS]

#2092: v.category option=del doesn't delete any categories
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 Reporter:  marisn       |       Owner:  grass-dev@…              
     Type:  defect       |      Status:  new                      
 Priority:  normal       |   Milestone:  7.0.0                    
Component:  Vector       |     Version:  svn-trunk                
 Keywords:  v.category   |    Platform:  Linux                    
      Cpu:  Unspecified  |  
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Comment(by mmetz):

 Replying to [ticket:2092 marisn]:
 > According to v.category documentation, option=del should result in
 deleting all categories, still it does nothing - all categories are
 present after module run.

 option=del deletes all categories with the value set with the cat option.
 The cat option is by default set to 1, thus only categories with value 1
 will be deleted, as happened in the example:
 >
 {{{
 v.category input=augstumi_merged output=augstumi_merged2 option=del
 layer=1
 v.category izpildīts. 1 features modified.
 }}}
 >

 In order to delete all categories of the given layer, cat must be set to
 -1. This was nmot clear in the documentation, fixed in r57940.

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Ticket URL: <http://trac.osgeo.org/grass/ticket/2092#comment:1>
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