Here we go:
> buzz
function(x) {
y <- x + pi
return(y)
}
> q()
Save workspace image? [y/n/c]: python
Save workspace image? [y/n/c]: y
root@erinminfo [/home/erinminf/public_html]# python
Python 2.7.5 (default, Sep 11 2013, 02:14:06)
[GCC 4.1.2 20080704 (Red Hat 4.1.2-54)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import rpy2.robjects as R
>>> R.r.buzz(3)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/usr/local/lib/python2.7/site-packages/rpy2/robjects/__init__.py",
line 213, in __getattribute__
raise orig_ae
AttributeError: 'R' object has no attribute 'buzz'
>>> R.r['buzz'](3)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/usr/local/lib/python2.7/site-packages/rpy2/robjects/__init__.py",
line 216, in __getitem__
res = _globalenv.get(item)
LookupError: 'buzz' not found
>>>
root@erinminfo [/home/erinminf/public_html]#
On Wed, Oct 30, 2013 at 10:16 AM, Collin Lynch <coll...@cs.pitt.edu> wrote:
> Erin, one question, can you access the defined functions by key?
>
> In lieu of:
> > x = R.r.buzz(3)
>
> Can you do:
> x = R.r['buzz'](3)
>
>
> Alternatively if you need only one or two custom functions have you
> considered just defining them via python as in:
>
> PStr = """
> function(LM) {
> S <- summary(LM);
> print(S$fstatistic);
> F <- S$fstatistic;
> P <- pf(F[1], F[2], F[3], lower=FALSE);
> return(P);
> }
> """
> r_LMPValFunc = robjects.r(PStr)
>
> Best,
> Collin.
>
>
> On Tue, 29 Oct 2013, Erin Hodgess wrote:
>
> > Hello again!
> >
> > I'm using python with a module rpy2 to call functions from R.
> >
> > It works fine on built in R functions like rnorm.
> >
> > However, I would like to access user-defined functions as well. For
> those
> > of you who use this, I have:
> >
> > import rpy2.robjects as R
> > R object as no attribute buzz
> >
> > (user defined function of buzz)
> >
> > This is on a Centos 5 machine with R-3.0.2 and python of 2.7.5.
> >
> > Thanks for any help.
> > Sincerely,
> > Erin
> >
> >
> >
> > --
> > Erin Hodgess
> > Associate Professor
> > Department of Computer and Mathematical Sciences
> > University of Houston - Downtown
> > mailto: erinm.hodg...@gmail.com
> >
> > [[alternative HTML version deleted]]
> >
> > ______________________________________________
> > R-help@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.
> >
>
>
--
Erin Hodgess
Associate Professor
Department of Computer and Mathematical Sciences
University of Houston - Downtown
mailto: erinm.hodg...@gmail.com
[[alternative HTML version deleted]]
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and provide commented, minimal, self-contained, reproducible code.
