[GRASS-user] creating new attributes

[Daniel Victoria]

Ricardo,

This is not an answer to your question but rather a question to the
list. Can v.db.update take as values a formula using data from other
collumns? Or would I need to use db.execute to do something like
new_column = col_A + col_B

Daniel

On Thu, Jul 29, 2010 at 4:57 PM, Ricardo Rodríguez
<ricardorodot02 at gmail.com> wrote:
> hello all, I tried to make calculations between attributes and insert the
> results in new columns, in vector files, but can not find an easy way to do
> also is very difficult to edit or delete an attribute not know if I'm doing
> something wrong or is it something program, which surprises me the level of
> complication that occurs to be a chore, been reviewing the documentation,
> but can not find anything about it, but routine suggested for this sql based
> standard of Grass gis.
>
>   thanks for your answers
>
> PS: I use the svn version 6.5
>
> Ricardo Rodríguez
>
> Univalle
>
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