[R] Is there a regression surface demo?

[Ista Zahn]

There is also wireframe() in lattice and bplot in rms.

-Ista

On Mon, Oct 11, 2010 at 3:49 PM, G. Jay Kerns <gkerns at ysu.edu> wrote:
> Dear Josh,
>
> On Mon, Oct 11, 2010 at 3:15 PM, Joshua Wiley <jwiley.psych at gmail.com> wrote:
>> Hi All,
>>
>> Does anyone know of a function to plot a regression surface for two
>> predictors?  RSiteSearch()s and findFn()s have not turned up what I
>> was looking for.  I was thinking something along the lines of:
>> http://mallit.fr.umn.edu/fr5218/reg_refresh/images/fig9.gif
>>
>> I like the rgl package because showing it from different angles is
>> nice for demonstrations.  I started to write my own, but it has some
>> issues (non functioning code start below), and I figured before I
>> tried to work out the kinks, I would ask for the list's feedback.
>>
>> Any comments or suggestions (about functions or preferred idioms for
>> what I tried below, or...) are greatly appreciated.
>>
>> Josh
>>
>
> [snip]
>
> I haven't tried to debug your code, but wanted to mention that the
> Rcmdr:::scatter3d function does 3-d scatterplots (with the rgl
> package) and adds a regression surface, one of 4 or 5 different types.
>  If nothing else, it might be a good place to start for making your
> own.
>
> A person can play around with the different types in the Rcmdr under
> the Graphs menu.  Or, from the command line:
>
> library(Rcmdr)
> with(rock, scatter3d(area, peri, shape))
>
> I hope that this helps,
> Jay
>
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>



-- 
Ista Zahn
Graduate student
University of Rochester
Department of Clinical and Social Psychology
http://yourpsyche.org