Extract Subset of Linear Network
Extract a subset of a linear network.
## S3 method for class 'linnet' x[i, ..., snip=TRUE]
x |
A linear network (object of class |
i |
Spatial window defining the subregion.
An object of class |
snip |
Logical. If |
... |
Ignored. |
This function computes the intersection
between the linear network x and the domain specified by i.
This function is a method for the subset operator "[" for
linear networks (objects of class "linnet"). It is provided
mainly for completeness.
The index i should be a window.
The argument snip specifies what to do with segments of x
which cross the boundary of i.
If snip=FALSE, such segments are simply deleted.
If snip=TRUE (the default), such segments are cut into pieces by the
boundary of i, and those pieces which lie inside the window
i are included in the resulting network.
Another linear network (object of class "linnet").
Adrian Baddeley Adrian.Baddeley@curtin.edu.au, Rolf Turner r.turner@auckland.ac.nz, Ege Rubak rubak@math.aau.dk and Suman Rakshit.
p <- par(mfrow=c(1,2), mar=0.2+c(0,0,1,0)) B <- owin(c(0.1,0.7),c(0.19,0.6)) plot(simplenet, main="x[w, snip=TRUE]") plot(simplenet[B], add=TRUE, col="green", lwd=3) plot(B, add=TRUE, border="red", lty=3) plot(simplenet, main="x[w, snip=FALSE]") plot(simplenet[B, snip=FALSE], add=TRUE, col="green", lwd=3) plot(B, add=TRUE, border="red", lty=3) par(p)
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