From mboxrd@z Thu Jan  1 00:00:00 1970
From: Erik Iverson <eriki@ccbr.umn.edu>
Subject: Re: [babel] multiple result outputs from function
Date: Tue, 16 Mar 2010 13:39:50 -0500
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To: Graham Smith <myotisone@gmail.com>
Cc: emacs-orgmode@gnu.org

Graham -

Graham Smith wrote:
> Below is a function that I am trying to run in orgmode/babel.
> 
> It seems to run OK, but instead of printing out three values, its only
> printing the final result.
> 
> Once again, i would appreciate some help with what I am missing.
> 
> Thanks,
> 
> Graham
> 
> 
> #+srcname: CI_function
> #+begin_src R :session daf
> summary.ci<-function(x){
> xbar<-mean(x)
> sigma<-sd(x)
> n<-length(x)
> sem<-sigma/sqrt(n)
> lower.ci<-xbar+sem*qnorm(0.025)
> upper.ci<-xbar+sem*qnorm(0.975)
> print (xbar)
> print  (lower.ci)
> print  (upper.ci)
> }
> #+end_src
> 
> #+srcname: SumFlowering2005
> #+begin_src R :session daf
> summary.ci(daf$Flower[daf$YEAR=="2005"])
> #+end_src
> 
> #+results: SumFlowering2005
> : 1.97860201016947
> 

 From org-babel docs...

The following options are mutually exclusive, and specify how the 
results should be collected from the source code block.

------------------------------------------------------
value
     This is the default. The result is the value of the last statement 
in the source code block. This header argument places Org-babel in 
functional mode. Note that in some languages, e.g., python, use of this 
result type requires that a return statement be included in the body of 
the source code block. E.g., :results value.

output
     The result is the collection of everything printed to stdout during 
the execution of the source code block. This header argument places 
Org-babel in scripting mode. E.g., :results output.
-------------------------------------------------------

So, add ":results output" to your source header block.

Or, you might want to define your R function to return a list of the 
three components you're after for further processing, and then not have 
to include ":results output"

Instead of the 3 print statements, which don't create objects, you could 
substitute

list(xbar, lower.ci, upper.ci)

--Erik