[GRASS-user] boundary vs area in wx0

[Helmut Kudrnovsky]

Dave Roberts wrote
> I'm having difficulty getting the wx devices to show vector features.
> For example, I have a map called newveg.  v.info clearly shows that 
> newveg has areas, e.g.
> 
> Number of points:  0         Number of centroids:  38183
> Number of lines:   0         Number of boundaries: 97451
> Number of areas:   38183     Number of islands:    7112
> 
> If I enter
> 
> d.vect newveg
> 
> it doesn't render anything.  If I enter
> 
> d.vect newveg type=area
> 
> it doesn't render anything, but if I enter
> 
> d.vect newveg type=boundary
> 
> I get the boundaries.  Furthermore, even when it doesn't draw anything, 
> the query tool returns information on polygons I can't see. 
> Unfortunately, even though
> 
> v.db.connect -p newveg
> 
> says
> 
> Vector map 
> <newveg>
>  is connected by:
> layer <1/newveg> table 
> <newveg>
>  in database 
> </home/dvrbts/grass/romo_gdb/PERMANENT/sqlite/sqlite.db> through
> driver 
> <sqlite>
>  with key 
> <cat>
> The query tool is returning information on layer 20 that is no longer 
> connected to newveg (it was once upon a time).
> 
> I'm confused
> 
> Dave
> 
> GRASS 7.3.svn, Linux magicsam 4.6.2-1-ARCH #1 SMP PREEMPT Wed Jun 8 
> 08:40:59 CEST 2016 x86_64 GNU/Linux

tested here with

Number of areas:     989768 

rendering takes some time, after finished rendering areas are displayed
without any problem.

try to rebuild topology by eg. v.build map=yourvector



-----
best regards
Helmut
--
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