问对于环境函数附加的语言R，是否有一个作用域环境来使用data.frames？

EN

  ID      LAT      LON ALT.ORTHO TYPE TYPE.ID
1  1 53.75447 12.51539   46.5555 LINE       1
2 10 53.75452 12.51565   46.5445 LINE       1
3 11 53.75452 12.51567   46.5365 LINE       1
4 12 53.75453 12.51570   46.5715 LINE       1
5 13 53.75453 12.51573   46.5785 LINE       1
6 14 53.75454 12.51576   46.6885 LINE       1

base.tab.epos <-
     base.tab[(base.tab$TYPE == 'LINE') |
              (base.tab$TYPE == 'RAND'),  ] 

with(base.tab) do { 
    base.tab.epos <-
         base.tab[(TYPE == 'LINE') |
                  (TYPE == 'RAND'),  ] 
}