{devoutansi} - ANSI graphics device                                                                                                                 
  ggraph                                                                                                                                              
                                                                                                                                                      
  5                                                                                                                                                   
                                                                                                                                                      
                                                                                                                                                      
                                                                                                                                                      
                                                                                                                                                      
  4                                                                                                                                                   
                                                                                                                                                      
                                                                                                                                                      
                                                                                                                                                      
                                                                                                                                       as.factor(cyl) 
  3                                                                                                                                                   
                                                                                                                                            4         
c                                                                                                                                                     
o                                                                                                                                           6         
u                                                                                                                                                     
n 2                                                                                                                                                   
t                                                                                                                                           8         
                                                                                                                                                      
                                                                                                                                                      
                                                                                                                                                      
  1                                                                                                                                                   
                                                                                                                                                      
                                                                                                                                                      
                                                                                                                                                      
                                                                                                                                                      
  0                                                                                                                                                   
                                                                                                                                                      
           10                       15                      20                      25                       30                      35               
                                                                   mpg