Hello Tobias, The cat colum is the ID that GRASS uses for vectors, hence this is expected and right. The same happens if you import a gpgk or shape or any other vector file into GRASS. See https://grass.osgeo.org/grass78/manuals/vectorintro.html for further info
HTH, Vero El mié, 20 oct 2021 a las 9:34, Tobias Pilz (<top...@pik-potsdam.de>) escribió: > Dear list, > > when I use in R the writeVECT() command the resulting map in GRASS got > the 'cat' column silently added to its attribute table if it didn't exist. > > The vector object in question was previously imported to R via > readVECT() and had a different column defined as key column. > > Is this behaviour of writeVECT() intentional? If yes, why so and > wouldn't it make sense to give a warning? > > Note: I used rgrass7 version 0.2-6 together with GRASS 7.8.5 under Linux > (opensuse). > > Regards, > > Tobias > > > _______________________________________________ > grass-stats mailing list > grass-stats@lists.osgeo.org > https://lists.osgeo.org/mailman/listinfo/grass-stats >
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