# chop.tess

##### Subdivide a Window or Tessellation using a Set of Lines

Divide a given window into tiles delineated by a set of infinite straight lines, obtaining a tessellation of the window. Alternatively, given a tessellation, divide each tile of the tessellation into sub-tiles delineated by the lines.

##### Usage

`chop.tess(X, L)`

##### Arguments

- X
- A window (object of class
`"owin"`

) or tessellation (object of class`"tess"`

) to be subdivided by lines. - L
- A set of infinite straight lines (object of class
`"infline"`

)

##### Details

The argument `L`

should be a set of infinite straight lines in the plane
(stored in an object `L`

of class `"infline"`

created by the
function `infline`

).
If `X`

is a window, then it is divided into tiles
delineated by the lines in `L`

.

If `X`

is a tessellation, then each tile of `X`

is
subdivided into sub-tiles delineated by the lines in `L`

.

The result is a tessellation.

##### Value

- A tessellation (object of class
`"tess"`

).

##### Warning

If `X`

is a non-convex window, or a tessellation containing
non-convex tiles, then `chop.tess(X,L)`

may contain a tile
which consists of several unconnected pieces.

##### See Also

##### Examples

```
L <- infline(p=1:3, theta=pi/4)
W <- square(4)
chop.tess(W, L)
```

*Documentation reproduced from package spatstat, version 1.28-1, License: GPL (>= 2)*