Hi, Which database back-end are you using? I seem to recall that the DBF back-end only supports a very limited subset of update operations.
cheers, Dylan On Tue, Jun 9, 2009 at 8:56 AM, A. Marcia BARBOSA<[email protected]> wrote: > Hi, > I'm trying to populate a column with 10 raised to the power of the > values in another column: > > v.db.update map=ItaReg column=x qcolumn=10^logx > > but I get a dbmi protocol error. I've tried using either single or > double quotes with no success. If I use a combination of both, i.e. > "qcolumn= ' 10^logx ' " it doesn't report any error, but doesn't do > the operation either (the column remains unchanged). > > It works fine for other operations (e.g. 10*logx), though. Is there > another way in which I should specify the exponentiation? > > Thanks, > Marcia > _______________________________________________ > grass-user mailing list > [email protected] > http://lists.osgeo.org/mailman/listinfo/grass-user > _______________________________________________ grass-user mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/grass-user
