[R] How to get a list work in RData file

[Sean O'Riordain]

you know about
?history

Sean

On 16/08/05, Liaw, Andy <andy_liaw at merck.com> wrote:
> If you want to keep track of the function call that produced an object,
> usually you need to do that inside the function that's being called, e.g.,
> 
> > test.xy <- function(x,y) {
> +     xy <- x+y
> +     attr(xy, "Call") <- match.call()
> +     xy
> + }
> > xyadd <- test.xy(x=2, y=3)
> > xyadd
> [1] 5
> attr(,"Call")
> test.xy(x = 2, y = 3)
> > str(xyadd)
>  atomic [1:1] 5
>  - attr(*, "Call")= language test.xy(x = 2, y = 3)
> 
> 
> Andy
> 
> > From: Xiyan Lon
> >
> > Dear R-Helper,
> > I want to know how I get a list  work which I saved in RData
> > file. For
> > example,
> >
> >  > test.xy <- function(x,y) {
> > +    xy <- x+y
> > +    xy
> > + }
> >  >
> >  > xyadd <- test.xy(x=2, y=3)
> >  > xyadd
> > [1] 5
> >  > x1 <- c(2,43,60,8)
> >  > y1 <- c(91,7,5,30)
> >  >
> >  > xyadd1 <- test.xy(x=x1, y=y1)
> >  > xyadd1
> > [1] 93 50 65 38
> >  > save(list = ls(all=TRUE), file = "testxy.RData")
> >  > rm(list=ls(all=TRUE))
> >  > load("C:/R/useR/testxy.RData")
> >  > ls()
> > [1] "test.xy" "x1"      "xyadd"   "xyadd1"  "y1"
> >  >
> >  > ls.str(pat="xyadd")
> > xyadd :  num 5
> > xyadd1 :  num [1:4] 93 50 65 38
> >  >
> >
> > When I run, I know the result like above
> >  > xyadd
> > [1] 5
> >  > xyadd1
> > [1] 93 50 65 38
> >  >
> > what I want to know, is there any function to make the result like:
> >
> >  > xyadd
> >
> >          test.xy(x=2, y=3)
> >
> > and
> >
> >  > xyadd1
> >
> >         test.xy(x=x1, y=y1)
> >
> > Best,
> > Xiyan Lon
> >
> > ______________________________________________
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> >
> >
> >
> 
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