From: francogrex <francogrex_at_mail.com>

Date: Wed, 23 Jul 2008 07:06:37 -0700 (PDT)

PUT "(flet(( mean(zlist)";

**RUN;
**

%xlog(CL);

Date: Wed, 23 Jul 2008 07:06:37 -0700 (PDT)

I have written some programs in Common Lisp and I have been using SAS to pipe
those programs to my lisp compiler in batch mode by using the %xlog and

%xlst SAS commands. I wonder if there is in R a similar way to pipe commands

to LISP so that all my work would be concentrated in R even when I have to
call a LISP program? I have looked at the foreign library but this seems to
adjust data types not for piping commands in batch mode.

Here is a simple program (example) to generate random normal variables from
SAS to LISP; of course it's a toy example because there is no need for a
LISP routine in this particular case. I hope R has a similar feature. Thanks
**DATA _NULL_;
**

FILE 'c:\cl.lisp' LRECL=1024;

PUT "(defun run (num Mn SD)";

PUT "(setq mix (list nil))";

PUT "(dotimes (n num)";

PUT "(setq u (- (* 2 (random 1.0)) 1)"; PUT "v (- (* 2 (random 1.0)) 1)"; PUT "w (+ (expt u 2) (expt v 2)))"; PUT "(when (< w 1)"; PUT "(progn"; PUT "(setq z (sqrt (/ (* -2 (log w)) w))"; PUT "x (* u z)"; PUT "y (* v z)"; PUT "mix (append (list x) mix)"; PUT "mix (append (list y) mix)))))"; PUT "(setq mix (remove nil mix)"; PUT "mixnew (loop for x in mix append (list(+ Mn (* SD x)))))";PUT "(print mixnew)";

PUT "(flet(( mean(zlist)";

PUT "(setq sum (loop for x in zlist sum x))"; PUT "(setq m (/ sum (length zlist)))))";PUT '(pprint (list "The mean is:" (mean mixnew))))'; PUT "(flet((var(zlist)";

PUT "(setq sumsq (loop for x in zlist sum (* (- x m) (- x m)))"; PUT "v (/ sumsq (- (length zlist) 1)))))";PUT "(setq std (sqrt (var mixnew))))"; PUT '(pprint (list "The Standard Deviation is:" std)))'; PUT "(run 500 41 17.5)";

%xlog(CL);

-- View this message in context: http://www.nabble.com/Calling-LISP-programs-in-R-tp18611512p18611512.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ R-help_at_r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.Received on Wed 23 Jul 2008 - 17:11:28 GMT

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