[R] Rcmdr scatter3d

[John Fox]

Dear chip,

When there is groups variable specified, scatter3d() colours the
regression surface, points, and residuals for each group according to
the colours specified in surface.col. (Setting surface=FALSE suppresses
the regression surfaces and residuals.)

You can save the rgl graph that scatter3d() produces as a bitmapped png
graphic [e.g., via Graphs -> 3D graph -> Save graph to file, which uses
rgl.snapshot()]. There is also an rgl.postscript() command, which
supports some vector-graphics formats, but I've been unable to use it
successfully.

I hope this helps,
 John

On Tue, 4 Sep 2007 13:43:44 -0700 (PDT)
 array chip <arrayprofile at yahoo.com> wrote:
> Hi, I am using the scatter3d function in Rcmdr to plot
> the first 3 principal components, I have a grouping
> variable of 2 groups, and tried to plot points with
> different colors, somehow I couldn't change the
> default colors of the 2 groups (blue and green)by
> using option points.col=c('red','blue'), what's the
> problem here?
> 
> scatter3d(all.pca$x[,2],all.pca$x[,3],all.pca$x[,1],
> surface=FALSE, residuals=TRUE, bg="white",
> axis.scales=F, grid=F, ellipsoid=F, xlab='PCA
> 2',ylab='PCA 3', zlab='PCA
> 1',sphere.size=1.5,groups=as.factor(c(rep(1,100),rep(2,50)))
> ,point.col=c('red','blue'))
> 
> I am also wondering if I can have a copy of the image
> in high resolution, just like copying a regular R plot
> in "Metafile"? 
> 
> Thanks
> 
> 
> 
>        
>
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--------------------------------
John Fox, Professor
Department of Sociology
McMaster University
Hamilton, Ontario, Canada
http://socserv.mcmaster.ca/jfox/