# lixellate

##### Subdivide Segments of a Network

Each line segment of a linear network will be divided into several shorter segments (line elements or lixels).

##### Usage

`lixellate(X, …, nsplit, eps, sparse = TRUE)`

##### Arguments

- X
A linear network (object of class

`"linnet"`

) or a point pattern on a linear network (object of class`"lpp"`

).- …
Ignored.

- nsplit
Number of pieces into which

*each*line segment of`X`

should be divided. Either a single integer, or an integer vector with one entry for each line segment in`X`

. Incompatible with`eps`

.- eps
Maximum length of the resulting pieces of line segment. A single numeric value. Incompatible with

`nsplit`

.- sparse
Optional. Logical value specifying whether the resulting linear network should be represented using a sparse matrix. If

`sparse=NULL`

, then the representation will be the same as in`X`

.

##### Details

Each line segment in `X`

will be subdivided into equal pieces.
The result is an object of the same kind as `X`

, representing the
same data as `X`

except that the segments have been subdivided.

Splitting is controlled by the arguments `nsplit`

and `eps`

,
exactly one of which should be given.

If `nsplit`

is given, it specifies the
number of pieces into which *each* line segment of `X`

should be divided. It should be either a single integer, or an integer vector
of length equal to the number of line segments in `X`

.

If `eps`

is given, it specifies the maximum length of
any resulting piece of line segment.

It is strongly advisable to use `sparse=TRUE`

(the default)
to limit the computation time.

If `X`

is a point pattern (class `"lpp"`

) then the
spatial coordinates and marks of each data point are unchanged, but the
local coordinates will change, because they are
adjusted to map them to the new subdivided network.

##### Value

Object of the same kind as `X`

.

##### See Also

##### Examples

```
# NOT RUN {
A <- lixellate(simplenet, nsplit=4)
plot(A, main="lixellate(simplenet, nsplit=4)")
points(vertices(A), pch=16)
spiders
lixellate(spiders, nsplit=3)
# }
```

*Documentation reproduced from package spatstat, version 1.57-1, License: GPL (>= 2)*