[R] Loading JMP Files

Marc Schwartz marc_schwartz at comcast.net
Wed Aug 15 21:14:10 CEST 2007

You might want to specifically look at R Windows FAQ:


In Windows, you need to use double back-slashes or use Unix-like
forward-slashes. So, for example, use:


Additionally, on data import matters, reading the R Data Import/Export
Manual, available online at:


or from the menus in your R installation, would be helpful.

Lastly, you should not have needed to download the 'foreign' *package*,
as it is part of the default R installation. Using:


should have been sufficient.


Marc Schwartz

On Wed, 2007-08-15 at 11:43 -0700, Diana C. Dolan wrote:
> Hi,
> I know how to use SPSS and JMP, and have quite a few
> JMP files I would like to use in R.  I converted them
> to .xpt files, downloaded the 'foreign' library then
> tried this command:
> >read.xport("D:\\Databases\nameoffile.xpt")
> to which I get:
> >Error in lookup.xport(file) : unable to open file
> I have read FAQ lists and Google searched and cannot
> figure out what I'm doing wrong that my files won't
> open.  I tried saving to the C drive, but no luck
> there.  I also have no luck getting R to read my SPSS
> files with read.spss
> My file names do have spaces and dashes, and I do have
> variables/variable names longer than 8 characters.
> Please help!  I am very new to R and do not understand
> all the package reference manuals...I can not seem to
> find a simple, basic guide to how to command R and use
> basic functions without a bunch of jargon (eg 'usage'
> and 'arguments').  It would help to at least be able
> to load my files to practice on.
> Any help would be appreciated!
> Thanks,
> Diana
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