[R] retrieve rows from frame assuming criterion

[Luis Rideau Cruz]

Hi all,

I have a data frame in which one column(PUNTAR) is of character type.
What I want is to retrieve is the frame but only with those rows matching elements of PUNTAR with a list characters (e.g c("IX49","IX48") )

Year    TUR  STODNR   PUNTAR
1994  9412 94020061     IX49
1994  9412 94020062     IX48
1994  9412 94020063      X32
1994  9412 94020065      X23
1994  9412 94020066      X27
1994  9412 94020067     XI19
1994  9412 94020068     XI16
1994  9412 94020069     XI14
1994  9412 94020070      XI8
1994  9412 94020071      X25
1994  9412 94020072      X18
1994  9412 94020073     II23
1994  9412 94020074    XII33
1994  9412 94020075    XII31

"my.function"("frame") should be then equal to 

Year TURNR   STODNR M_PUNTAR
1994  9412 94020061     IX49
1994  9412 94020062     IX48

Thank you in advance


Luis Ridao Cruz
Fiskirannsóknarstovan
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