[R] writing several command line in R console

[Spencer Graves]

You can start the first line with "(".  Then everything you write will 
NOT be syntactically complelte until you issue the closing ")".  I 
learned this from Venables and Ripley, Modern Applied Statistics with S.

The "+" sign in front of each line is NOT something you should enter:  R 
changes its prompt to tell you that the previous line was not 
syntactically complete.

I prefer to keep my code someplace else and then transfer a complete 
function into R at one time.  See 
"http://socserv.socsci.mcmaster.ca/jfox/Books/Companion/ESS/index.html"

Does this answer your questions?
Best Wishes,
Spencer Graves

Vincent Stoliaroff wrote:
> 
> Hi R lovers
> 
> I would like to know how to step to the next line in the R console 
> editor without breaking the continuity of my code
> more clearly : if for example I write a function, so far i have to write 
> the all code inside on the same line wich may become obscure as the 
> function is more and more complex.
> I would like to do like in the example of the manuels:
> 
>> twosam <- function(y1, y2) {
> 
>    n1  <- length(y1); n2  <- length(y2)
>    yb1 <- mean(y1);   yb2 <- mean(y2)    s1  <- var(y1);    s2  <- var(y2)
>    s <- ((n1-1)*s1 + (n2-1)*s2)/(n1+n2-2)
>    tst <- (yb1 - yb2)/sqrt(s2*(1/n1 + 1/n2))    tst  }
> 
> 
> all I can do is something like that:
> 
>> twosam <- function(y1, y2) {    n1  <- length(y1); n2  <- length(y2)
> 
> 
> +    yb1 <- mean(y1);   yb2 <- mean(y2)    s1  <- var(y1);    s2  <- 
> var(y2)
> +    s <- ((n1-1)*s1 + (n2-1)*s2)/(n1+n2-2)
> +   tst <- (yb1 - yb2)/sqrt(s2*(1/n1 + 1/n2))    tst  }
> 
> with the sign "+" in front of each line
> What does this sign mean? and how could I solve my problems
> Thanks
> 
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