Methods for the class "linfun"
of functions on a linear network.
# S3 method for linfun
print(x, …) # S3 method for linfun
summary(object, …)
# S3 method for linfun
plot(x, …, L=NULL,
eps = NULL, dimyx = NULL, xy = NULL,
main)
# S3 method for linfun
as.linim(X, L, …, eps = NULL, dimyx = NULL, xy = NULL)
# S3 method for linfun
as.data.frame(x, …)
# S3 method for linfun
as.owin(W, …)
# S3 method for linfun
as.function(x, …)
A function on a linear network
(object of class "linfun"
).
A linear network
Arguments passed to as.mask
to control
the pixel resolution.
Extra arguments passed to plot.im
or
print.default
, or passed to the function itself.
Main title for plot.
For print.linfun
and summary.linfun
the result is NULL
.
For plot.linfun
the result is the same as
for plot.im
.
For the conversion methods, the result is an object of the
required type: as.linim.linfun
returns an object of
class "linim"
, and so on.
These are methods for the generic functions
plot
, print
, summary
as.data.frame
and as.function
,
and for the spatstat generic functions
as.owin
and
as.linim
.
An object of class "linfun"
represents a
mathematical function that could be evaluated at any location
on a linear network. It is essentially an R function
with some
extra attributes.
The method as.owin.linfun
extracts the two-dimensional spatial
window containing the linear network.
The method as.linim.linfun
converts the function to a pixel
image on the linear network (an object of class "linim"
).
The method plot.linfun
first converts the function to a
pixel image using as.linim.linfun
, then plots the image using
plot.linim
.
Note that a linfun
function may have additional arguments,
other than those which specify the location on the network
(see linfun
). These additional arguments may be passed
to as.linim
and to plot.linfun
.
# NOT RUN {
X <- runiflpp(3, simplenet)
f <- nnfun(X)
f
plot(f)
as.function(f)
as.owin(f)
as.linim(f)
head(as.data.frame(f))
# }
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