[R] scatter3d

[Jeff Tostenrude]

Thank you for the advice, I will try you suggestions on Monday.

Uwe, by interactive I just mean the ability to spin the plot.

On Sat, Oct 3, 2015 at 7:07 AM, Fox, John <jfox at mcmaster.ca> wrote:

> Dear Jeff,
>
> > -----Original Message-----
> > From: Jeff Tostenrude [mailto:climberjeff at gmail.com]
> > Sent: October 2, 2015 11:46 PM
> > To: Fox, John <jfox at mcmaster.ca>
> > Cc: r-help at r-project.org
> > Subject: Re: [R] scatter3d
> >
> > Thank you for the suggestion. Yes, it does seem to be a bit
> counter-intuitive, but
> > that is the output I am being asked to produce. I have only been using R
> for a
> > few weeks, so there is probably a better way to do it.
> >
> > Anyway, your suggestion did work, but only up to 337 data points. I am
> dealing
> > with ~100,000 data points so this doesn't really work for me. Is there
> another
> > method you would suggest? My goal is to plot multiple regression planes
> > (without points) in an interactive 3d plot.
>
> I don't think that you said in your initial posting that you have so many
> points.
>
> The scatter3d() function in the car package uses functions in the rgl
> package to draw 3D scatterplots. As Uwe Ligges and Duncan Murdoch have
> pointed out, you can use the rgl package directly to make your graph. One
> approach would be to adapt the scatter3d() code, removing the part of the
> code that plots the points.
>
> As Duncan points out, scatter3d(), which was initially written a long time
> ago, uses both older rgl.*() functions and newer, and in a sense
> better-behaved, *3d() functions in the rgl package, which isn't
> recommended. Because scatter3d() works properly, I haven't changed that
> (maybe I should). If you write your own function or script, you can take
> Duncan's advice and use only the *3d() functions.
>
> Best,
>  John
>
> >
> > Thank you,
> > Jeff
> >
> > On Fri, Oct 2, 2015 at 5:22 PM, Fox, John <jfox at mcmaster.ca
> > <mailto:jfox at mcmaster.ca> > wrote:
> >
> >
> >       Dear Jeff,
> >
> >       I'm tempted to say that a scatterplot without points is an
> oxymoron, but
> > that wouldn't be very helpful.
> >
> >       Actually, the scatter3d() function used by the Rcmdr is in the car
> > package. The Rcmdr 3D scatterplot dialog doesn't provide for suppressing
> the
> > points, but if you add radius=rep(0, n) to the command that's generated,
> where
> > you'd replace n with the number of cases in the dataset, that would do
> the trick
> > by plotting spheres of 0 radius. For example, try
> >
> >               scatter3d(prestige ~ income + education, data=Duncan,
> > radius=rep(0, 45), residuals=FALSE)
> >
> >       either in the Rcmdr or at the R command prompt.
> >
> >       For more information see ?scatter3d or press the Help button in the
> > Rcmdr 3D scatterplot dialog and follow the link to scatter3d.
> >
> >       I hope this helps,
> >        John
> >
> >       -----------------------------
> >       John Fox, Professor
> >       McMaster University
> >       Hamilton, Ontario
> >       Canada L8S 4M4
> >       Web: socserv.mcmaster.ca/jfox <http://socserv.mcmaster.ca/jfox>
> >
> >
> >
> >
> >       > -----Original Message-----
> >       > From: R-help [mailto:r-help-bounces at r-project.org <mailto:
> r-help-
> > bounces at r-project.org> ] On Behalf Of Jeff
> >       > Tostenrude
> >       > Sent: October 2, 2015 7:34 PM
> >       > To: r-help at r-project.org <mailto:r-help at r-project.org>
> >       > Subject: [R] scatter3d
> >       >
> >       > I am using scatter3d in R Commander to plot a group of regression
> > surfaces.
> >       > However, I only want to display the surfaces. How do I remove the
> > points?
> >       >
> >
> >       >       [[alternative HTML version deleted]]
> >       >
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> >
> >
>
>

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