[R] Interaction with R

[Thomas Lumley]

On Sun, 8 Jul 2001 brunels at free.fr wrote:

> Hello eve-R-ybody,
>
> i'd like to know where i can find some documentation about how calling
> foreign programs from a R function and use the results obtained.
> I mean, make an other program compute the value of a complex formula and use
> the result as an object in the R function.

It depends on what the other program is and exactly what you want to do.

* Under Windows it may be possible to use the DCOM server (on CRAN in the
Software|"Other" section)

* If the program can read from standard input and write to standard output
you can probably use connections (help(Connections), or see the "Data
Import/Export Manual"

* You can dynamically load compiled C, C++ or Fortran code into R and call
these routines directly.

* If you can get the program to write output to a file you can then read
the file.


	-thomas

Thomas Lumley			Asst. Professor, Biostatistics
tlumley at u.washington.edu	University of Washington, Seattle

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