# convert z-values from string to double v.db.addcol map=geodetic_pts columns="Z_VALUE_D double precision" v.db.update map=geodetic_pts column=Z_VALUE_D qcolumn=Z_VALUE v.db.select map=geodetic_pts columns=cat,Z_VALUE,Z_VALUE_ # convert 2D vector point map to 3D based on attribute v.to.3d input=geodetic_pts out=geodetic_pts_3d column=Z_VALUE_D
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