Dear Jason,

If I understood, you are looking for a way of represent a response surface.
I know that there are other very interesting (and most indicated)
solutions,  but give a look at the akima package

Best wishes,


miltinho astronauta
brazil
===

x<-runif(100)
y<-rnorm(100)
binvar<-c(rep(1,70),rep(0,30))
df<-data.frame(cbind(x,y,binvar))
x11(800,600)
par(mfrow=c(1,2))
plot(y~x, data=df, col=(df$binvar+1), pch=(df$binvar+1))
require(akima)
df.interp<-interp(df$x, df$y, df$binvar)
plot(y~x, type="n")
image(df.interp, add=T, col=gray((0:32)/32))
points(y~x, data=df, col=(df$binvar+1), pch=(df$binvar+1))


On Mon, Sep 8, 2008 at 12:39 PM, Jason Thibodeau <jbloudg20@gmail.com>wrote:

> Hello all,
>
> I have a very large file (280k lines) containing three comma separated
> variables. The first variable is a 0 or 1 depicting a pass or fail. The
> other two are X and Y coordinates. Is there a good way I can represent this
> data in a chart/plot form other than using a 3d histogram? If I need to use
> the histogram, should I base my chart off the example contained in the RGL
> package?
>
> Thanks a lot.
>
> --
> Jason Thibodeau
> ECE Dept., University of Connecticut
> 371 Fairfield Way, Storrs, CT 06269
> Phone: 860-486-5274 , Fax: 860-486-2447
> Email: jpt03002@engr.uconn.edu
> URL: www.engr.uconn.edu/~jpt03002
>
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>
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