[R] Extracting values in table

[Bert Gunter]

Ramnath:

With my apologies if I'm wrong, it does not look like you have made
much of an effort to learn R's basics, e.g. by working thru the
"Introduction to R" tutorial distributed with R. If that is the case,
why do you expect us to help?

-- Bert

On Fri, Aug 26, 2011 at 8:52 AM, Ramnath <sairam.bt at gmail.com> wrote:
> Hi All,
>
> I am a beginner in programming in r and please do forgive me if my question
> seems to be silly and sometimes not understandable.
>
> 1. we have a list of elements in a list say:
>
> ls<-list("N","E","E","N","P","E","M","Q","E","M")
>
> 2. We have an another list of tables in a list say:
>
> n <- list("M", "N","E","P","Q","M","N","E","Q","N")
>
> tb <- lapply(1:10, function(i)matrix(sample(4), 2, 2,
> dimnames=list(n[sample(10,2)], n[sample(2,2)])))
>
> 3. we need to extract values from the table in the list where colname is
> always "M" , wherein the rowname should be the 1st element in the list ls
> for table 1 in the list tb and 2nd element in table 2 and so on...
>
> for ex:
>   M N
> N 4 1
> P 3 2
>
> In table 1 , we need to extract value 4.
>
>
> Thanks to all in advance.
>
>
>
>
> --
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>
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>



-- 
"Men by nature long to get on to the ultimate truths, and will often
be impatient with elementary studies or fight shy of them. If it were
possible to reach the ultimate truths without the elementary studies
usually prefixed to them, these would not be preparatory studies but
superfluous diversions."

-- Maimonides (1135-1204)

Bert Gunter
Genentech Nonclinical Biostatistics