[R] how to view only readings of a selected data from a column while the other columns remain

[John Kane]

This looks a lot like homework.  However here is a hint
ABD1990  <- subset(xx, Year == 1990 & Market == "ABC")

John Kane
Kingston ON Canada


> -----Original Message-----
> From: jowe.tjioe.2012 at business.smu.edu.sg
> Sent: Sat, 15 Sep 2012 02:22:42 -0700 (PDT)
> To: r-help at r-project.org
> Subject: [R] how to view only readings of a selected data from a column
> while the other columns remain
> 
> Hi Friends
> 
> I am new here and have a problem
> 
>   Year       Market         Winner          BID
> 1  1990        ABC             Apple          0.1260
> 2  1990        ABC             Apple         0.1395
> 3  1990        EFG             Pear           0.1350
> 4  1991        EFG             Apple         0.1113
> 5  1991        EFG            Orange          0.1094
> 
> 
> For each year and separately for the two markets (i.e.,ABC,EFG), examine
> the
> combined data for Apple and Pear on the bid price variable BID for
> presence
> of potential outliers.5 Identify instances where you observe the presence
> of
> potential outliers.
> 
> I managed to separate the data by year only
> 
> y <- c(1, seq(300))
>> year1991 <- subset(X, y < 39)
>> year1991
> Year1991 <- year1991[, c(1,2,3,5)]
>> Year1991
> 
> now I need help on whats the right R command to key to select(View) only
> ABC
> of the Market COLUMN, which the other column values remains.
> 
> Is it possible to do multiple  separation at one time? or step by step
> 
> Kindly advise :)
> 
> 
> 
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> 
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