Damian Maddalena wrote > I am trying to convert vector SSURGO soils data to a raster using > v.to.rast. The attribute I want to use for the conversion is a > categorical string describing soil type, so I need to generate int > categories before converting. I explored v.category for doing this, but > I'm not sure it's what I'm looking for. I want to assign all polygons > with the same soil description the same number. For example, output from > `v.db.select map=soils | head` is below. I want to create a new > attribute based on "sm_soil_se" called "sm_soil_se_int" that is a > categorical int value for each string category. I don't care what the > numbers are, so long as each of the polygons with the same string value > have the same categorical int value. (I will assign the string values to > each int category using the "label_column" parameter.) > > Is there an existing GRASS command that will do this? If not, should I > be using Python? > > Thank you!! > > -Damian > > cat|sm_mapunit|sm_mapun_1|sm_soil_se|sm_csr|rating > 1|160|456713|"Xerorthents-Millsholm complex, 50 to 75 percent slopes"||10 > 2|TaE|455865|"Tierra loam, 15 to 30 percent slopes, MLRA 14"||40 > 3|CoF|455785|"Cut and fill land-Millsholm complex, 30 to 50 percent > slopes"||20 > 4|MeG|455829|"Millsholm loam, 20 to 60 percent slopes, moist, MLRA 15"||10 > 5|LeF|455816|"Los Gatos loam, 30 to 50 percent slopes"||20 > 6|GcF|455802|"Los Gatos loam, 30 to 50 percent slopes"||20 > > -- > “Science knows it doesn't know everything; otherwise, it'd stop." ~Dara > O'Briain > > _______________________________________________ > grass-user mailing list
> [email protected] > https://lists.osgeo.org/mailman/listinfo/grass-user See https://grass.osgeo.org/grass76/manuals/v.db.update.html ----- best regards Helmut -- Sent from: http://osgeo-org.1560.x6.nabble.com/Grass-Users-f3884509.html _______________________________________________ grass-user mailing list [email protected] https://lists.osgeo.org/mailman/listinfo/grass-user
