[R] R or Splus?
José Ernesto Jardim
ernesto at ipimar.pt
Tue Dec 5 17:50:48 CET 2000
J.Brainard at uea.ac.uk wrote:
> It's been suggested I use R, I suppose because my employer is too skint to pay
> for a copy of Splus.
> But.... it doesn't seem to be stable. I was trying to do some ordinary regression
> and stepping through a model. I was trying to set up a model ('kitchen_sink') in
> which to put all my model parameters. Then I wanted to use step() to see what it
> would reduce the model to. I couldn't even get started though. I would specify
> the same model again and again, with just a few of the possible variables, and
> sometimes lm() would fall over and return an error message, sometimes the regression
> ran fine. I got fed up and ftp'd the original tables up to a machine running
> Splus, where the models ran fine, every time, with all kinds of specifications.
> Is this a normal experience? Is R buggy or what? I note the other email that
> R can't handle files named x. If I can use Splus, should I just do that?
> (Alternative is graphics-interface-only SPSS, and given that I've never used it,
> I'm working on remote machines, from home, with no manuals handy, that is something I
> should really wish to avoid :-).
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I've been working with R since version 0.49 and I'm very happy with it ! I started
using R before using S+ in my Linux box.
I had a S+ license during 1998 and I'm now looking again at S+ because I want to use the
S+SpatialStats. I think there's some differences but most of what I do I do it in R (I'm
a Marine Biologist) and for "commom" statistic analysis you have everything you need in
R. If you want to do something more specific you can allways write your own functions
and make them available to the R community :-)
The main differences for me are the manuals, but you can allways use the S+ manuals with
some changes, the trellis graphics and some modules (SpatialStats for example).
Anyway as someone stated you allways get a money back guarantee and the differences are
3000 EUR for a Linux License ...
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