myobj structure 4 .Data list 4 factor structure 3 .Data integer 3 1 2 3 .Label character 3 a bc def class character 1 factor ints integer 3 N 2 3 floats numeric 3 1.1 1.2 1.3 logs logical 3 1 N 0 .Names character 4 factor ints floats logs row.names character 3 1 2 3 class character 1 data.frame