spatstat.geom (version 3.3-6)

methods.funxy: Methods for Spatial Functions

Description

Methods for objects of the class "funxy".

Usage

# S3 method for funxy
contour(x, ...)
# S3 method for funxy
persp(x, ...)
# S3 method for funxy
plot(x, ...)

Value

NULL.

Arguments

x

Object of class "funxy" representing a function of $x,y$ coordinates.

...

Named arguments controlling the plot. See Details.

Author

Adrian Baddeley , Rolf Turner and Ege Rubak .

Details

These are methods for the generic functions plot, contour and persp for the class "funxy" of spatial functions.

Objects of class "funxy" are created, for example, by the commands distfun and funxy.

The plot, contour and persp methods first convert x to a pixel image object using as.im, then display it using plot.im, contour.im or persp.im.

Additional arguments ... are either passed to as.im.function to control the spatial resolution of the pixel image, or passed to contour.im, persp.im or plot.im to control the appearance of the plot.

In particular the argument W specifies the spatial domain over which the function will be plotted. See the Examples.

See Also

funxy, distfun, as.im, plot.im, persp.im, contour.im, spatstat.options

Examples

   f <- distfun(letterR)
   contour(f)
   ## plot it on a larger region
   B <- owin(c(1,5), c(-1, 4))
   contour(f, W=B)
   persp(f, W=B, theta=40, phi=40, border=NA, shade=0.7)