[R] scatter3d

[Fox, John]

Dear Uwe,

> -----Original Message-----
> From: Uwe Ligges [mailto:ligges at statistik.tu-dortmund.de]
> Sent: October 3, 2015 3:24 PM
> To: Jeff Tostenrude <climberjeff at gmail.com>; Fox, John <jfox at mcmaster.ca>
> Cc: r-help at r-project.org; Duncan Murdoch <murdoch.duncan at gmail.com>
> Subject: Re: [R] scatter3d
> 
> 
> 
> On 03.10.2015 17:53, Jeff Tostenrude wrote:
> > Thank you for the advice, I will try you suggestions on Monday.
> >
> > Uwe, by interactive I just mean the ability to spin the plot.
> 
> If you can calculate the planes by some functions, I reall suggest to use
> functions from rgl that are able to plot planes (rather than points).

Indeed, this is what scatter3d() does -- plots regression surfaces, including planes, along with points. One approach, as I suggested, is simply to get rid of the points, and plot just the regression surfaces.

Best,
 John

> 
> Best,
> Uwe Ligges
> 
> >
> > On Sat, Oct 3, 2015 at 7:07 AM, Fox, John <jfox at mcmaster.ca
> > <mailto:jfox at mcmaster.ca>> wrote:
> >
> >     Dear Jeff,
> >
> >     > -----Original Message-----
> >     > From: Jeff Tostenrude [mailto:climberjeff at gmail.com
> <mailto:climberjeff at gmail.com>]
> >     > Sent: October 2, 2015 11:46 PM
> >     > To: Fox, John <jfox at mcmaster.ca <mailto:jfox at mcmaster.ca>>
> >     > Cc:r-help at r-project.org <mailto: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>
> >     > <mailto: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> <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>
> >     <mailto:r-help- <mailto:r-help->
> >     >bounces at r-project.org <mailto: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>
> >     <mailto: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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