On Wed, Aug 01, 2012 at 05:13:01PM -0500, R. Michael Weylandt wrote:
> On Wed, Aug 1, 2012 at 4:19 PM, Ramiro Barrantes
> wrote:
> > Hello,
> >
> > I come from using different programming languages (C++, Mathematica, Perl)
> > but have been using R extensively for several months. I see the data
On Wed, Aug 1, 2012 at 4:19 PM, Ramiro Barrantes
wrote:
> Hello,
>
> I come from using different programming languages (C++, Mathematica, Perl)
> but have been using R extensively for several months. I see the data frame
> as a key piece of the language and wanted to inquire people's experience
I think the vector is far more fundamental than the data frame. Most of the
time I write functions that return vectors, even if my input is a data frame.
If I need a large number of input vectors, I set up the input arguments to
include a data frame and additional named parameters with defaults
I have no answer to your question, but note:
1. You do not need to return a data frame at all, of course. Most
functions do not -- e.g., say, lm() .
2. See ?with and ?within for perhaps relevant functionality.
-- Bert
On Wed, Aug 1, 2012 at 2:19 PM, Ramiro Barrantes
wrote:
> Hello,
>
> I come f
Hello,
I come from using different programming languages (C++, Mathematica, Perl) but
have been using R extensively for several months. I see the data frame as a
key piece of the language and wanted to inquire people's experience regarding
its use.
Say you have a data frame D
D <- data.frame
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