[GRASS-user] Problems with v.dissolve

GRASS GRASS user
1

Hello all

first: thanks Markus for the useful hints with broken topology within shapes....
and now the question/comment

I try to dissolve common boundaries of areas with the same attribute (not cat).
The dissolved vector file does not contain a table. In addition, a vector file (without table) remains with an added 4 digit number at the end (e.g. DRP_Permea_diss_1234).

Is this a bug, or do I have a problem?

I used Grass 6.2.2 and the latest 6.3.cvs. Same problem with both!

Best regards
Manuel

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_______________________________________________________________________
Dr. Manuel Seeger
Wiss. Assistent Scientific Assistant
Physische Geographie Dpt. of Physical Geography
FB VI - Geographie/Geowissenschaften Geography/Geosciences
Universität Trier University of Trier
D - 54286 Trier
Tel.: +49-651-201 4557
Fax: +49-651-201 3976
Web: http://www-neu.uni-trier.de/index.php?id=9607

2

I try to dissolve common boundaries of areas with the same attribute
(not cat).
The dissolved vector file does not contain a table. In addition, a
vector file (without table) remains with an added 4 digit number at the
end (e.g. DRP_Permea_diss_1234).

Is this a bug, or do I have a problem?

It depends on what you expected to obtain.
Clearly v.dissolve can not produce attribute table as it produces vectors with new “cats” and “old” atts in the resultant (dissolved) vector can’t be merged together.

Dissolved vectors need revisited attribute tables (eg. aggregate atts).

I used Grass 6.2.2 and the latest 6.3.cvs. Same problem with both!

Best regards
Manuel

raffaele