Sender: r-help-boun...@r-project.org
On-Behalf-Of: j...@bitwrit.com.au
Subject: Re: [R] table() reading problem
Message-Id: <4d81c14a.2000...@bitwrit.com.au>
Recipient: killian.door...@barclayscapital.com
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On 03/16/2011 08:20 PM, fre wrote:
I have the following problem:
I have some string with numbers like k. I want to have a table like the
function table() gives. However I am not able to call the first row, the 1,
2, 3, 5, 6 or 9. I tried to do that by a data.frame, but that doesn't seem
to work either. The levels keep bothering me.
This is an example of the code:
k<-c(1,1,1,1,1,3,5,6,2,1,3,9,2,3,1,1,1)
table(k)
k
1 2 3 5 6 9
9 2 3 1 1 1
x<-table(k)
dim(x)
[1] 6
x[1] #But i only want the one
1
9
x<-data.frame(x)
x[1,1] #You are not allowed to use this one for example 3*x[1,1] is
impossible
[1] 1
Levels: 1 2 3 5 6 9
I hope anyone has an idea of using the table function without this
inconvenience. I thought about writing a counter myself, but that seems
complicated.
Because I have to examine very large examples later on, I don't want to slow
the calculations down if possible.
Thanks for your help in advance.
Hi Frederique,
It seems to me that you want the names of the table rather than the
counts, as Sarah has already suggested. So:
as.numeric(names(x))
should give you what you want. However, if all you want to do is
determine the unique elements of k, then:
unique(k)
might be what you are seeking.
Jim
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