funxy
From spatstat v1.29-0
by Adrian Baddeley
Spatial Function Class
A simple class of functions of spatial location
Usage
funxy(f, W)Arguments
- f
- A
functionin the Rlanguage with argumentsx,y(at least) - W
- Window (object of class
"owin") inside which the function is well-defined.
Details
This creates an object of class "funxy".
This is a simple mechanism for handling a function
of spatial location $f(x,y)$ to make it easier to display
and manipulate.
f should be a function in the Rlanguage.
The first two arguments of f must be named x and y
respectively.
W should be a window (object of class "owin") inside which the
function f is well-defined.
The function f should be vectorised: that is,
if x and y are numeric vectors of the same length
n, then v <- f(x,y) should be a vector of length n.
Value
- A
function, in fact a copy off, which also belongs to the class"funxy". This class has methods forprint,plot,contourandpersp.
See Also
Examples
f <- function(x,y) { x^2 + y^2 - 1}
g <- funxy(f, square(2))
g(0.2, 0.3)
gCommunity examples
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