[GRASS-user] Seeking vector layer tutorial

Hello, I'm trying to gain proficiency w/ GRASS vectors & layers. I've read https://grass.osgeo.org/grass76/manuals/vectorintro.html and https://grasswiki.osgeo.org/wiki/Vector_Database_Management a few times, but am still not clear on how to create layers. I have three vector layers: BASINS,

Re: [GRASS-user] Error while executing: 'CREATE TEMPORARY TABLE...

On Thu, Mar 7, 2019 at 6:35 PM Markus Neteler wrote: > > Hi, > > On Sat, Feb 16, 2019 at 12:28 AM Jamille Haarloo wrote: > > > > Dear Grass community, > > > > I don't have any success with removal of columns from a vector file I am working with, while adding columns has not been a problem. > > >

Re: [GRASS-user] sqrt sql

Thank you very much Vero ! Frank Le 08/03/2019 à 11:10, Veronica Andreo a écrit : Hi functionalities like sqrt() or log() are not available in base SQLite, then you have to install an extension See v.db.update manual page and this wiki:

Re: [GRASS-user] sqrt sql

Hi functionalities like sqrt() or log() are not available in base SQLite, then you have to install an extension See v.db.update manual page and this wiki: https://grasswiki.osgeo.org/wiki/Build_SQLite_extension_on_Linux HTH, Vero El vie., 8 mar. 2019 05:22, Frank David escribió: > Hello, >

[GRASS-user] sqrt sql

Hello, How Is it possible to calculate a sqrt from attribut fields to fill another field, like : v.db.update map=myvector column=field2 query_column=sqrt(field1) Or is there any trick ? Thank you Frank ___ grass-user mailing list