R: Plot/estimate surface

ksmooth2 {lava} | R Documentation

## Plot/estimate surface

### Description

Plot/estimate surface

### Usage

    ksmooth2(x, data, h = NULL, xlab = NULL, ylab = NULL, zlab = "",
      gridsize = rep(51L, 2), ...)

### Arguments

`x` | formula or data
`data` | data.frame
`h` | bandwidth
`xlab` | X label
`ylab` | Y label
`zlab` | Z label
`gridsize` | grid size of kernel smoother
`...` | Additional arguments to graphics routine (persp3d or persp)

### Examples

    ksmooth2(rmvn(1e4,sigma=diag(2)*.5+.5),c(-3.5,3.5),h=1,
            rgl=FALSE,theta=30)

    if (interactive()) {
        ksmooth2(rmvn(1e4,sigma=diag(2)*.5+.5),c(-3.5,3.5),h=1)
        ksmooth2(function(x,y) x^2+y^2, c(-20,20))
        ksmooth2(function(x,y) x^2+y^2, xlim=c(-5,5), ylim=c(0,10))

        f <- function(x,y) 1-sqrt(x^2+y^2)
        surface(f,xlim=c(-1,1),alpha=0.9,aspect=c(1,1,0.75))
        surface(f,xlim=c(-1,1),clut=heat.colors(128))
        ##play3d(spin3d(axis=c(0,0,1), rpm=8), duration=5)
    }

    if (interactive()) {
        surface(function(x) dmvn(x,sigma=diag(2)),c(-3,3),lit=FALSE,smooth=FALSE,box=FALSE,alpha=0.8)
        surface(function(x) dmvn(x,sigma=diag(2)),c(-3,3),box=FALSE,specular="black")##'
    }

    if (!inherits(try(find.package("fields"),silent=TRUE),"try-error")) {
        f <- function(x,y) 1-sqrt(x^2+y^2)
        ksmooth2(f,c(-1,1),rgl=FALSE,image=fields::image.plot)
    }

[Package lava version 1.6.1 Index]