Extract.linim
From spatstat v1.480
by Adrian Baddeley
Extract Subset of Pixel Image on Linear Network
Extract a subset of a pixel image on a linear network.
Usage
"["(x, i, ...)
Arguments
 x

A pixel image on a linear network (object of class
"linim"
).  i

Spatial window defining the subregion.
Either a spatial window (an object of class
"owin"
), or a logicalvalued pixel image, or a point pattern (an object of class"ppp"
), or any type of index that applies to a matrix, or something that can be converted to a point pattern byas.ppp
(using the window ofx
).  ...
 Ignored.
Details
This function is a method for the subset operator "["
for
pixel images on linear networks (objects of class "linim"
).
The pixel image x
will be restricted to the
domain specified by i
.
If i
is a window (or a logicalvalued pixel image)
then x[i]
is another pixel image of class "linim"
,
representing the restriction of x
to the spatial domain
specified by i
.
If i
is a point pattern, then x[i]
is the vector of
pixel values of x
at the locations specified by i
.
Pixels outside the domain of x
have value NA
.
Value

Another pixel image on a linear network (object of class
"linim"
)
or a vector of pixel values.
Examples
M < as.mask.psp(as.psp(simplenet))
Z < as.im(function(x,y){x}, W=M)
Y < linim(simplenet, Z)
X < runiflpp(4, simplenet)
Y[X]
Y[square(c(0.3, 0.6))]
Community examples
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