[R] Exporting Splus Data to R

[ripley@stats.ox.ac.uk]

On Tue, 25 Feb 2003, Paul, David  A wrote:

> Using 
> 
> > data.dump(c("foo.frame.1","foo.frame.2", ...), file="DumpData",
> oldStyle=T)
> 
> in Splus generates the requisite file in my working Splus directory.
> However, when I use
> 
> > library(foreign)
> > data.restore(file = "C:/.../DumpData",verbose = TRUE, env = .GlobalEnv)
> 
> I get the error messages
> 
> Error in as.name(name) : attempt to use zero-length variable name
> In addition: Warning messages: 
> 1: NAs introduced by coercion 
> 2: NAs introduced by coercion 
> 3: NAs introduced by coercion 
> 
> and not all of the Splus dataframes are imported into R (though some of them
> are).
> Any suggestions would be greatly appreciated.  I am using R version 1.6.1 on
> Windows 2000, Splus version 6.1 on Windows 2000.

?data.restore does say

    ... S-PLUS on either Windows (versions 3.x, 4.x, 2000) ...

and we are not sure that data.dump(oldStyle=T) generates the same format: 
it looks from your example that it does not.  If you could make an example 
available we could try to crack the differences.

If you want to transfer data frames, why not use dump and source?  That 
has worked for me.

-- 
Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
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