R: [R] retrieve rows from frame assuming criterion [corrected]

Guazzetti Stefano Stefano.Guazzetti at ausl.re.it
Fri Jul 23 16:03:03 CEST 2004


sorry for my previus (WRONG)
answer, as someone already pointed out
a solution could be

subset(data, PUNTAR==c("IX49","IX48"))



> -----Messaggio originale-----
> Da: Guazzetti Stefano 
> Inviato: venerdì 23 luglio 2004 15.55
> A: 'Luis Rideau Cruz'; r-help at stat.math.ethz.ch
> Oggetto: R: [R] retrieve rows from frame assuming criterion
> 
> 
> Assuming your data.frame is called "data"
> 
> data[data$PUNTAR==c("IX49","IX48"),]
> 
> is probably what you want
> 
> Stefano
> 
> 
> 
> > -----Messaggio originale-----
> > Da: Luis Rideau Cruz [mailto:Luisr at frs.fo]
> > Inviato: venerdì 23 luglio 2004 15.37
> > A: r-help at stat.math.ethz.ch
> > Oggetto: [R] retrieve rows from frame assuming criterion
> > 
> > 
> > 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
> > Nóatún 1
> > P.O. Box 3051
> > FR-110 Tórshavn
> > Faroe Islands
> > Phone:             +298 353900
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> > E-mail:              luisr at frs.fo
> > Web:                www.frs.fo
> > 
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