If you have the data in files in such format, with one entry per line, you
can do something like:
dat <- matrix(scan("fileWithData", sep=":"), ncol=2, byrow=TRUE)
Then the first column of dat would be the indices, and the second column
would be the values.
Andy
> From: Luke
>
> Hi Gabor, thank
Hi Gabor, thanks a lot. I understand it now. But Andrew's method is
easier for me to understand. Can I extend my question? I have a data
file, every line has such format:
2:102 5:85 ...
The number before colon is data entry index, the number after colon is
data entry value, and other data entries a
Its the indexing function written in ordinary function form. That is,
foo[1:2] can be written as "["(foo, 1:2)
On 5/16/05, Luke <[EMAIL PROTECTED]> wrote:
> Yes, it works. Althought I can understand the help page of sapply, I
> don't know why it works. What is "["?
>
> -Luke
>
> On 5/16/05,
Yes, it works. Althought I can understand the help page of sapply, I
don't know why it works. What is "["?
-Luke
On 5/16/05, Gabor Grothendieck <[EMAIL PROTECTED]> wrote:
> On 5/16/05, Luke <[EMAIL PROTECTED]> wrote:
> > I have a simple question, but I couldn't find the answer in R manuals.
> >
On 5/16/05, Luke <[EMAIL PROTECTED]> wrote:
> I have a simple question, but I couldn't find the answer in R manuals.
>
> Assume I have a list:
> > foo <- list()
> > foo[[1]] <- c(1, 2, 3)
> > foo[[2]] <- c(11,22,33)
> > foo[[3]] <- c(111,222,333)
> > foo
> [[1]]
> [1] 1 2 3
>
> [[2]]
> [1] 11 22
