Thank you for your help. But here I just want to combine some vectors by
column based on the numbers determined by other R script.
For example, I have five vectors:
v1 <- c(0, 1, 0)
v2 <- c(1, 1, 0)
v3 <- c(2, 1, 2)
v4 <- c(2, 2, 1)
v5 <- c(0, 1, 1)
If I am going to combine the first two vectors, and one more other vector
determined by my other R script, say, vector 5. Then my R script is
x <- 5
cbind(v1, v2, paste("v", x, sep = ""))
The output is
v1 v2
[1,] "0" "1" "v5"
[2,] "1" "1" "v5"
[3,] "0" "0" "v5"
This is not what I want. I want to get this:
v1 v2 v5
[1,] 0 1 0
[2,] 1 1 1
[3,] 0 0 1
Can you give me further suggestions or comments? Thanks a lot.
Lisa
Barry Rowlingson wrote:
>
> On Tue, Dec 29, 2009 at 6:31 PM, Lisa <lisa...@gmail.com> wrote:
>>
>> Thank you for your reply. But in the following case, “cat()” or “print()”
>> doesn’t work.
>>
>> data.frame(cbind(variable 1, variable 2, cat(paste("variable", x),
>> "\n"))),
>> where x is a random number generated by other R script.
>>
>> Lisa
>
> Yes, because you are Doing It Wrong. If you have data that is indexed
> by an integer, don't store it in variables called variable1, variable2
> etc, because very soon you will be posting a message to R-help that is
> covered in the R FAQ...
>
> Store it in a list:
>
> v = list()
> v[[1]] = c(1,2,3,4,5)
> v[[2]] = c(4,5,6,7,8,9,9,9)
>
> then you can do v[[i]] for integer values of i.
>
> If you really really must get values of variable by name, perhaps
> because someone has given you a data file with variables called
> variable1 to variable99, then use the paste() construction together
> with the 'get' function:
>
> [ not tested, but should work ]
>
> > v1="99"
> > v2="102"
> > i=2
> > get(paste("v",i,sep=""))
> [1] 102
>
> Barry
>
> ______________________________________________
> R-help@r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
> http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>
>
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