Sorry for typo's! On Thu, 17 Jan 2008 13:02:54 +0100 [EMAIL PROTECTED] wrote:
I just wonder how was the tile-patching and dissolving (of CORINE shapefile(s)) done, as described in v.dissolve's help text? Were the file's "CODE_00" column different than "TEXT" ? > But anyway is good to make things as much as possible > more > transparent. I learned a lot from this small story. > > Thanks! > > On Wed, 16 Jan 2008 22:26:45 -0500 > "Patton, Eric" <[EMAIL PROTECTED]> wrote: > > Eric Patton wrote: > > > > Just a clarification...so it's the case that the > > column parameter > > > > in v.dissolve must always be of type integer, and > > *only* integer? > > > > Hamish: > > >The v.dissolve script with dissolve based on a column > > currently > > >requires that column to be of type integer. We should > > probably add a > > >check in the script for that (v.info -c). > > > > Ok, that's what I thought; thanks. I wanted to make > sure > > before I added a hint in the docs. > > Actually, I think Nikos mentioned something about > writing > > up a hint about it, so I'll hold off. > > > > >It would be possible to add any type of column to > > v.dissolve with unix > > >tools 'db.select | sort | uniq | nl' then create a new > > table with the > > >unique attributes + sequential integer column, then > > v.reclass as > > >before. > > > > >or add a new column to (a copy of) the existing table > > (v.db.addcol) and > > >populate it with a 'db.select | sort | uniq' loop and > > v.db.update, or > > >SQL + db.execute << "set DISOLVEKEY = $i where > ATTRIBUTE > > = '$VAL'" > > >(sorry my SQL is not good but you may be the idea of > > what I mean) > > > > Cool. It's always amazing how powerful these little > > command line tools can be. > > > > ~ Eric. > > > > > . > Nikos Alexandris - Ph.D. Candidate > . > Department of Remote Sensing > and > Landscape Information Systems > (FeLIS) > . > Faculty of Forestry and Natural Environment > Albert-Ludwigs-University Freiburg > . > Tel. +49 (0) 761 203 3697 > Fax. +49 (0) 761 203 3701 > Skype: Nikos.Alexandris > . > Address: Tennenbacher str. 4 > D-79106 Freiburg i. Br. > Germany > . > _______________________________________________ > grass-user mailing list > [email protected] > http://lists.osgeo.org/mailman/listinfo/grass-user . Nikos Alexandris - Ph.D. Candidate . Department of Remote Sensing and Landscape Information Systems (FeLIS) . Faculty of Forestry and Natural Environment Albert-Ludwigs-University Freiburg . Tel. +49 (0) 761 203 3697 Fax. +49 (0) 761 203 3701 Skype: Nikos.Alexandris . Address: Tennenbacher str. 4 D-79106 Freiburg i. Br. Germany . _______________________________________________ grass-user mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/grass-user
