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
function
in 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
,contour
andpersp
.
See Also
Examples
f <- function(x,y) { x^2 + y^2 - 1}
g <- funxy(f, square(2))
g(0.2, 0.3)
g
Community examples
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