Report the coordinates of the `patches`

at `(dx, dy)`

distances of the `agents`

.

```
patchAt(world, agents, dx, dy, torus = FALSE)
# S4 method for worldNLR,matrix,numeric,numeric
patchAt(world, agents, dx, dy, torus = FALSE)
```

- world
`WorldMatrix`

or`worldArray`

object.- agents
Matrix (

`ncol`

= 2) with the first column`pxcor`

and the second column`pycor`

representing the`patches`

coordinates, or`AgentMatrix`

object representing the moving`agents`

.- dx
Numeric. Vector of distances to the east (right) from the

`agents`

. If`dx`

is negative, the distance to the west (left) is computed.`dx`

must be of length 1 or of the same length as number of`patches`

or`turtles`

in`agents`

.- dy
Numeric. Vector of distances to the north (up) from the

`agents`

. If`dy`

is negative, the distance to the south is computed (down).`dy`

must be of length 1 or of the same length as number of`patches`

or`turtles`

in`agents`

.- torus
Logical to determine if the

`world`

is wrapped. Default is`torus = FALSE`

.

Matrix (`ncol`

= 2) with the first column `pxcor`

and the second column
`pycor`

representing the coordinates of the `patches`

at `(dx, dy)`

distances of the `agents`

. The order of the `patches`

follows the order
of the `agents`

.

If the `patch`

at distance `(dx, dy)`

of an `agent`

is outside of the `world`

's extent and `torus = FALSE`

,
`NA`

are returned
for the `patch`

coordinates;
if `torus = TRUE`

, the `patch`

coordinates from a wrapped `world`

are
returned.

Wilensky, U. 1999. NetLogo. http://ccl.northwestern.edu/netlogo/. Center for Connected Learning and Computer-Based Modeling, Northwestern University. Evanston, IL.

```
w1 <- createWorld(minPxcor = 0, maxPxcor = 9, minPycor = 0, maxPycor = 9)
patchCorner <- patchAt(world = w1, agents = patch(w1, 0, 0), dx = 1, dy = 1)
t1 <- createTurtles(n = 1, coords = cbind(xcor = 0, ycor = 0))
patchCorner <- patchAt(world = w1, agents = t1, dx = 1, dy = 1)
```