[R] duplicate 'row.names' are not allowed

[Gabor Grothendieck]

You are trying to create an illegal object, i.e. a
data.frame with duplicate row names so its
correctly signally the error.

Read the definition of data.frame in ?data.frame


On Tue, Apr 28, 2009 at 8:04 AM, amor Gandhi <amorigandhi at yahoo.de> wrote:
> Hi everyone,
>
> I have got the following problem:
>
> x1 <- rnorm(10,5,1)
> x2 <- runif(10,0,1)
> nam1 <- paste("A",1:4,sep=".")
> nam2 <- paste("A",6:9,sep=".")
> nam <- c(nam1,"A.4",nam2,"A.9")
> mydata <- data.frame(x1,x2)
> rownames(mydata) <- nam
> Error in `row.names<-.data.frame`(`*tmp*`, value = c("A.1", "A.2", "A.3", :
> duplicate 'row.names' are not allowed
> In addition: Warning message:
> non-unique values when setting 'row.names': ‘A.4’, ‘A.9’
>
> I am very thankful for your help!
>
> Amor
>
>
>
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