[GRASS-user] v.dissolve renames the attribute column

[Markus Metz]

On Sun, May 27, 2012 at 2:38 PM, spiderplant0 <spiderplant0 at gmail.com> wrote:
> When I run v.dissolve on my vector...
>
> *v.dissolve --o input=pass2 at mapset1 layer=1 column=fttcp output=pass3*
>
> The dissolving appears to work but the column name in the attribute table
> has changed from 'fttcp' to 'cat'. (I can tell by loading the GRASS vector
> into QGIS and viewing the attribute table).

Do you mean the column name of the input vector changed?

>
> Also, although the input has a dbf file, the output does not.

If the column is integer or not specified, there is no need for a new
attribute table because the new categories are either the same like
the old categories or identical to the values in <column>. You could
dun v.db.addtable in order to get an attribute table, but that does
not add any new information.

Markus M

>
> Is there a way to tell v.dissolve to retain the original column name or is
> there a way to rename it?
>
> Also, is there a reason v.dissolve doesnt write a dbf. Is there a way to get
> it to write the attribute table to a dbf or is there a way to convert the
> vector so it uses a dbf?
>
> I am using GRASS 6.4.2 on windows 7
>
>
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