# crossdist

##### Pairwise distances

Computes the distances between pairs of `things' taken from two different datasets.

##### Usage

`crossdist(X, Y, …)`

##### Arguments

- X,Y
Two objects of the same class.

- …
Additional arguments depending on the method.

##### Details

Given two datasets `X`

and `Y`

(representing either two point patterns or
two line segment patterns)
`crossdist`

computes the Euclidean distance from each thing
in the first dataset to each thing in the second dataset,
and returns a matrix containing these distances.

The function `crossdist`

is generic, with
methods for point patterns (objects of class `"ppp"`

),
line segment patterns (objects of class `"psp"`

),
and a default method. See the documentation for
`crossdist.ppp`

,
`crossdist.psp`

or
`crossdist.default`

for further details.

##### Value

A matrix whose `[i,j]`

entry is the distance
from the `i`

-th thing in the first dataset
to the `j`

-th thing in the second dataset.

##### See Also

`crossdist.ppp`

,
`crossdist.psp`

,
`crossdist.default`

,
`pairdist`

,
`nndist`

*Documentation reproduced from package spatstat, version 1.49-0, License: GPL (>= 2)*