R help - Jul 2009 - dump() an object of type raw ?

Is there a way to do this? I tried

   x <- writeBin(pi, raw())
   dump("x","x.R")
   source("x.R")

but is seems x.R is not source()-able, as it contains an unexpected symbol.

Thanks
Ben

On Jul 21, 2009, at 7:19 PM, Benjamin Tyner wrote:
> Is there a way to do this? I tried
Do what?

 > writeBin(pi, raw())
[1] 18 2d 44 54 fb 21 09 40

Why would you want to "source" _that_?
source() is for parse-able and executable R code.
>
>  x <- writeBin(pi, raw())
>  dump("x","x.R")
>  source("x.R")
>
> but is seems x.R is not source()-able, as it contains an unexpected  
> symbol.
>
> Thanks
> Ben


David Winsemius, MD
Heritage Laboratories
West Hartford, CT

On Jul 21, 2009, at 7:19 PM, Benjamin Tyner wrote:
> Is there a way to do this? I tried
>
>  x <- writeBin(pi, raw())
>  dump("x","x.R")
>  source("x.R")
>
> but is seems x.R is not source()-able, as it contains an unexpected  
> symbol.
>
Yes, "2d".I get:
 > source("/Users/davidwinsemius/x.R")
Error in source("/Users/davidwinsemius/x.R") :
   /Users/davidwinsemius/x.R:2:8: unexpected symbol
1: x <-
2: c(18, 2d
           ^

So there was an good faith effort to source the file but the  
interpreter was not put on notice that it would be getting  
hexadecimal. The file contains:

x <-
c(18, 2d, 44, 54, fb, 21, 09, 40)

and when you try to execute that from the command line you get:

 > x <-
+ c(18, 2d, 44, 54, fb, 21, 09, 40)
Error: syntax error

(R variable names cannot start with 2 and R wouldn't assume these are  
hexadecimal numbers.)


David Winsemius, MD
Heritage Laboratories
West Hartford, CT