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question about 3-d plot
4 messages · Deepankar Basu, Andrew, Tony
the following should work library(lattice) x <- seq(1,100) y <- seq(1,100) gr <- expand.grid(x,y) gr$z <- x + y + rnorm(10000,0,100) cloud(z ~ x + y, data = gr) also, look for the package rgl which does similar but with more possiblities.
On Feb 27, 4:28?pm, Dipankar Basu <basu... at gmail.com> wrote:
Hi R Users, I have produced a simulated scatter plot of y versus x tightly clustered around the 45 degree line through the origin with the following code: ?x <- seq(1,100) ?y <- x+rnorm(100,0,10) ?plot(x,y,col="blue") ?abline(0,1) Is there some way to generate a 3-dimensional analogue of this? Can I get a similar simulated scatter plot of points in 3 dimensions where the points are clustered around a plane through the origin where the plane in question is the 3-dimensional analogue of the 45 degree line through the origin? Deepankar ? ? ? ? [[alternative HTML version deleted]]
______________________________________________ R-h... at r-project.org mailing listhttps://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guidehttp://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
actually, I just realised you also want a line in the plot. I am not super-sure how to do this.
On Feb 27, 5:20?pm, andrew <andrewjohnro... at gmail.com> wrote:
the following should work library(lattice) x <- seq(1,100) y <- seq(1,100) gr <- expand.grid(x,y) gr$z <- x + y + rnorm(10000,0,100) cloud(z ~ x + y, data = gr) also, look for the package rgl which does similar but with more possiblities. On Feb 27, 4:28?pm, Dipankar Basu <basu... at gmail.com> wrote:
Hi R Users,
I have produced a simulated scatter plot of y versus x tightly clustered around the 45 degree line through the origin with the following code:
?x <- seq(1,100) ?y <- x+rnorm(100,0,10) ?plot(x,y,col="blue") ?abline(0,1)
Is there some way to generate a 3-dimensional analogue of this? Can I get a similar simulated scatter plot of points in 3 dimensions where the points are clustered around a plane through the origin where the plane in question is the 3-dimensional analogue of the 45 degree line through the origin?
Deepankar
? ? ? ? [[alternative HTML version deleted]]
______________________________________________ R-h... at r-project.org mailing listhttps://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guidehttp://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
______________________________________________ R-h... at r-project.org mailing listhttps://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guidehttp://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
Hi Deepankar The code on the following page looks kind of cool, and also seems to produce something of the type of graph you are after perhaps: https://r-forge.r-project.org/plugins/scmsvn/viewcvs.php/pkg/rgl/demo/regression.r?rev=702&root=rgl&sortby=date&view=auto [below is a copy of the code...] library(rgl) # demo: regression # author: Daniel Adler # $Id$ rgl.demo.regression <- function(n=100,xa=3,za=8,xb=0.02, zb=0.01,xlim=c(0,100),zlim=c(0,100)) { rgl.clear("all") rgl.bg(sphere = TRUE, color = c("black", "green"), lit = FALSE, size=2, alpha=0.2, back = "lines") rgl.light() rgl.bbox() x <- runif(n,min=xlim[1],max=xlim[2]) z <- runif(n,min=zlim[1],max=zlim[2]) ex <- rnorm(n,sd=3) ez <- rnorm(n,sd=2) esty <- (xa+xb*x) * (za+zb*z) + ex + ez rgl.spheres(x,esty,z,color="gray",radius=1,specular="green", texture=system.file("textures/ bump_dust.png",package="rgl"), texmipmap=T, texminfilter="linear.mipmap.linear") regx <- seq(xlim[1],xlim[2],len=100) regz <- seq(zlim[1],zlim[2],len=100) regy <- (xa+regx*xb) %*% t(za+regz*zb) rgl.surface(regx,regz,regy,color="blue",alpha=0.5,shininess=128) lx <- c(xlim[1],xlim[2],xlim[2],xlim[1]) lz <- c(zlim[1],zlim[1],zlim[2],zlim[2]) f <- function(x,z) { return ( (xa+x*xb) * t(za+z*zb) ) } ly <- f(lx,lz) rgl.quads (lx,ly,lz,color="red",size=5,front="lines",back="lines",lit=F) } rgl.open() rgl.demo.regression()
On Feb 27, 5:28?am, Dipankar Basu <basu... at gmail.com> wrote:
Hi R Users, I have produced a simulated scatter plot of y versus x tightly clustered around the 45 degree line through the origin with the following code: ?x <- seq(1,100) ?y <- x+rnorm(100,0,10) ?plot(x,y,col="blue") ?abline(0,1) Is there some way to generate a 3-dimensional analogue of this? Can I get a similar simulated scatter plot of points in 3 dimensions where the points are clustered around a plane through the origin where the plane in question is the 3-dimensional analogue of the 45 degree line through the origin? Deepankar ? ? ? ? [[alternative HTML version deleted]]
______________________________________________ R-h... at r-project.org mailing listhttps://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guidehttp://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.