[R] index range

[Gabor Grothendieck]

You can define origin 0 objects yourself if you like.
Here is a partial implementation:

"[.orig0" <- function(x, i)
    if (is.numeric(i)) .subset(x, i+0) else .subset(x, i)
orig0 <- function(x)
    structure(x, class = c("orig0", setdiff(class(x), "orig0")))
x <- orig0(1:5)
x[0:3] # 1:4

Note that usually 0 means leave out that element in R and
in this implementation -1 means leave it out.  Also normally
-3 mean leave out 3rd element but in the implementation
above -0 would be 0 so it would give the first element.

Probably best to just get used to the R way.

On Feb 18, 2008 6:31 PM, hill0093 <hill0093 at umn.edu> wrote:
>
> It looks to me like the index range starts at 1 in R.
> Is this true?
> If so, is there a way to change it to start at 0?
> That way, I wouldn't have to make so many
> changes when I translate a function from
> another language.
> --
> View this message in context: http://www.nabble.com/index-range-tp15550797p15550797.html
> Sent from the R help mailing list archive at Nabble.com.
>
> ______________________________________________
> R-help at 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.
>