[R] accessing a table

[Jonathan Baron]

>From trafton at viz.itd.nrl.navy.mil  Tue Jul 10 15:43:07 2001
>>>>>> Jonathan Baron writes:
>
>>> From: Greg Trafton <trafton at itd.nrl.navy.mil> Hi, all.  I'm sure
>>> this is a simple question, but I'm having problems figuring it out
>>> myself...  I have a table:
>>> 
>>> currenttable <- table(junk[-1],junk[-n])
>>> currenttable
>>>      
>>>       bar foo junk
>>>  bar    2   2    0
>>>  foo    1   0    0
>>>  junk   0   0    1
>
>>> and I'd like to know the result of the cell currenttable(bar,foo).
>
>> currenttable[1,2]
>
>> or even
>
>> table(junk[-1],junk[-n])[1,2]
>
>Whoops!  I should have been a bit more specific!  sometimes foo is not
>in the table, so I do not know exactly what row or column it is in; I
>need to access it via the "headings" (rows and column names).  

The following works, although it may not work in every imaginable case:

currenttable["foo","bar"]

Jon
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