[GRASS-dev] d.vect -a shows only some elements

[Moritz Lennert]

Hamish wrote:
> Moritz Lennert wrote:
>> Using d.vect.thematic -u I fill a grassrgb column in the attribute 
>> table. See http://moritz.homelinux.org/grass/d_vect_a1.png.
>>
>> But when I try to reuse these colors with d.vect -a, only a few of the
>>
>> regions get filled (with an additional dissolution of common 
>> boundaries): http://moritz.homelinux.org/grass/d_vect_a2.png
>>
>> All of the objects in the map have a color code in the grassrgb
>> column.
>>
>> I cannot reproduce this problem in spearfish, so I am a bit lost.
>>
>> Any ideas ?
> 
> 
> "with an additional dissolution of common boundaries" is causing the
> problem.
> 
> dissolution is based on common cat, but thematic colors are based on
> "jk" column. areas with a common cat can have different attribute
> values.
> 
> e.g. if cat refers to country number, and attr col refers to province
> area.

This is not it. The dissolution came from the simple fact, that I used 
'd.vect type=area' instead of d.vect type=area,boundary. Sorry, I didn't 
realize this before.

So I still have:

GRASS 6.3.cvs (ESPON):~ > psql -d espon -c "select * from temp where 
grassrgb is NULL"
  cat | nuts2 | jk | dkdldm | ab | lmn | grassrgb
-----+-------+----+--------+----+-----+----------
(0 lignes)

and

GRASS 6.3.cvs (ESPON):~ > psql -d espon -c "select distinct grassrgb 
from temp"
  grassrgb
----------
  0:0:255
  170:0:85
  255:0:0
  85:0:170

So, the grassrgb column is filled as it should. To make sure there is 
not problem with the colours, I do a seperate d.vect for each range. 
This works perfectly: http://moritz.homelinux.org/grass/d_vect_a1.png

But trying to reproduce this with d.vect -a, I get: 
http://moritz.homelinux.org/grass/d_vect_a2.png.

As you can see, those regions that are colored, are colored correctly, 
but not all regions are colored. If I change the color scheme, I get 
exactly the same results: http://moritz.homelinux.org/grass/d_vect_a3.png

It is as if d.vect stopped coloring at one point.
..

If I display the map in four d.vect calls with where='grassrgb=255:0:0', 
etc, it displays fine.

I also get the same problem if I use d.vect.thematic on the cat column...

And I still cannot reproduce this in spearfish. Quite lost...

Moritz