Report the individuals among `turtles`

that are located on the `patches`

at
`(dx, dy)`

distances of the `agents`

.

```
turtlesAt(world, turtles, agents, dx, dy, breed, torus = FALSE)
# S4 method for worldNLR,agentMatrix,matrix,numeric,numeric,missing
turtlesAt(world, turtles, agents, dx, dy, torus)
# S4 method for worldNLR,agentMatrix,matrix,numeric,numeric,character
turtlesAt(world, turtles, agents, dx, dy, breed, torus = FALSE)
```

- world
`WorldMatrix`

or`worldArray`

object.- turtles
`AgentMatrix`

object representing the moving`agents`

.- 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`

.- breed
Characters. Vector of

`breed`

names for the selected`turtles`

. If missing, there is no distinction based upon`breed`

.- torus
Logical to determine if the

`world`

is wrapped. Default is`torus = FALSE`

.

`AgentMatrix`

representing the individuals among `turtles`

of any of the given `breed`

, if specified,
which are located on the `patches`

at `(dx, dy)`

distances of the
`agents`

.

If the `patch`

at distance `(dx, dy)`

of an `agent`

is outside of the `world`

's extent and `torus = FALSE`

,
no `turtle`

is returned;
if `torus = TRUE`

, the `turtle`

located on the `patch`

whose coordinates
are defined from the wrapped `world`

is 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)
t1 <- createTurtles(n = 10, coords = cbind(xcor = 0:9, ycor = 0:9),
breed = c(rep("sheep", 5), rep("wolf", 5)))
t2 <- turtlesAt(world = w1, turtles = t1, agents = turtle(t1, who = 0),
dx = 1, dy = 1)
t3 <- turtlesAt(world = w1, turtles = t1,
agents = patch(w1, c(3,4,5), c(3,4,5)), dx = 1, dy = 1,
breed = "sheep")
```