Hi Micha and Stefan, Thank you for you suggestions! I was able to extract the attributes into a list, and use the r.water.outlet to create the watersheds.
I now have a number of different maps in grass, each with one record representing a different watershed. I was wondering if there was a grass module that would compile each record/watershed from each map into a singular map with each watershed having one record? I’ve tried v.patch but it seems to merge all of the watersheds into one record in the final output map. Thanks, Kelsey > On May 19, 2021, at 12:24 PM, Stefan Blumentrath <[email protected]> > wrote: > > Hi Kelesy, > > In addition to Michas very good suggestions you can try the table module in > pygrass: > https://grass.osgeo.org/grass78/manuals/libpython/pygrass.vector.html?highlight=table#module-pygrass.vector.table > Or the db_select module from the scripting library: > https://grass.osgeo.org/grass78/manuals/libpython/script.html?highlight=select#script.db.db_select > for all kind of tables > Or the vector_db_select module: > https://grass.osgeo.org/grass78/manuals/libpython/script.html?highlight=select#script.vector.vector_db_select > for tables connected to vector maps > To get the coordinates in Python... > > Cheers > Stefan > > -----Original Message----- > From: grass-user <[email protected]> On Behalf Of Kelsey Wong > Sent: onsdag 19. mai 2021 20:52 > To: [email protected] > Subject: [GRASS-user] GRASS GIS 7.8.5 r.water.outlet > > Hi, > > I am trying to use the r.water.outlet function in a python script in GRASS. > For the 'coordinates' parameter my x,y coordinate values are stored in two > columns in the attribute table of another layer. Is there a way to access > these values from the attribute table directly? > > Thanks, > > Kelsey > _______________________________________________ > grass-user mailing list > [email protected] > https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Flists.osgeo.org%2Fmailman%2Flistinfo%2Fgrass-user&data=04%7C01%7C%7Cd2729cbc538a4733864908d91af73bb6%7C6cef373021314901831055b3abf02c73%7C0%7C0%7C637570471438665050%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=OrVazRa4Mkas0DxUkYtb8i0lfHwFul06zoYFzxO0Dhs%3D&reserved=0 _______________________________________________ grass-user mailing list [email protected] https://lists.osgeo.org/mailman/listinfo/grass-user
