#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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According to v.category documentation, option=del should result in
deleting all categories, still it does nothing - all categories are
present after module run.
{{{
v.category input=augstumi_merged option=print layer=1 | head
62
63
v.category input=augstumi_merged output=augstumi_merged2 option=del
layer=1
Processing features...
Copying attribute table(s)...
Building topology for vector map <augstumi_merged2>...
Registering primitives...
11942 primitives registered
11942 vertices registered
Building areas...
100%
0 areas built
0 isles built
Attaching islands...
Attaching centroids...
100%
Number of nodes: 0
Number of primitives: 11942
Number of points: 11942
Number of lines: 0
Number of boundaries: 0
Number of centroids: 0
Number of areas: 0
Number of isles: 0
v.category izpildīts. 1 features modified.
GRASS 7.0.svn (Latvija_LKS):~/soft/grass_trunk > v.category
input=augstumi_merged2 option=print layer=1 | head
62
63
}}}
#2092: v.category option=del doesn't delete any categories
-------------------------+--------------------------------------------------
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 |
-------------------------+--------------------------------------------------
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.
Replying to [comment:1 mmetz]:
> 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:
Ahhh. This slipped my mind as cat option only accepts single integer and
no ranges or lists of categories. Opened a new bug for it: #2094
Closing as issue is fixed, still I would vote for not having cat=1 as
default for "delete" action as it endangers 1st cat to accidental
deletion. (Read - why 1st is more special than others? If user forgot to
specify cat, let's punish him by nuking 1st cat )
)