# intersect.tess

From spatstat v1.17-0
by Adrian Baddeley

##### Intersection of Two Tessellations

Yields the intersection of two tessellations, or the intersection of a tessellation with a window.

##### Usage

`intersect.tess(X, Y, ...)`

##### Arguments

##### Details

A tessellation is a collection of disjoint spatial regions
(called *tiles*) that fit together to form a larger spatial
region. See `tess`

.

If `X`

and `Y`

are not tessellations, they are first
converted into tessellations by `as.tess`

.

The function `intersect.tess`

then computes the intersection between
the two tessellations. This is another tessellation, each of whose
tiles is the intersection of a tile from `X`

and a tile from `Y`

.

One possible use of this function is to slice a window `W`

into
subwindows determined by a tessellation. See the Examples.

##### Value

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

).

##### See Also

##### Examples

```
opa <- par(mfrow=c(1,3))
# polygon
data(letterR)
plot(letterR)
# tessellation of rectangles
X <- tess(xgrid=seq(2, 4, length=10), ygrid=seq(0, 3.5, length=8))
plot(X)
plot(intersect.tess(X, letterR))
A <- runifpoint(10)
B <- runifpoint(10)
plot(DA <- dirichlet(A))
plot(DB <- dirichlet(B))
plot(intersect.tess(DA, DB))
par(opa)
```

*Documentation reproduced from package spatstat, version 1.17-0, License: GPL (>= 2)*

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