Report n patches or turtles randomly selected among agents.

nOf(agents, n)

# S4 method for matrix,numeric
nOf(agents, n)

## Arguments

agents

Matrix (ncol = 2) with the first column pxcor and the second column pycor representing the patches coordinates, or

          Matrix (ncol = 3) with the first column "pxcor and the second
column pycor representing the patches coordinates and the
third column id, or

AgentMatrix object representing the moving agents, or

Matrix (ncol = 2) with the first column whoTurtles and the
second column id.

n

Integer. Number of patches or turtles to select from agents.

## Value

Matrix (ncol = 2, nrow = n) with the first column pxcor

and the second column pycor representing the coordinates of the selected patches from agents, or

    Matrix (ncol = 2) with the first column pxcor
and the second  column pycor representing the coordinates of the
selected patches from agents, n per individual "id", or

AgentMatrix (nrow = n) representing the turtles
selected from agents,

Integer. Vector of who numbers for the selected turtles from
agents, n per individual "id".

## Details

n must be less or equal the number of patches or turtles in agents.

     If agents is a matrix with ncol = 3, the selection of n
random patches is done per individual "id". The order of the patches
coordinates returned follow the order of "id".
If agents is a matrix (ncol = 2) with columns whoTurtles and
id, the selection of n random turtles (defined by their whoTurtles)
is done per individual "id". The order of the who numbers returned
follow the order of "id".

Sarah Bauduin

## Examples

# Patches
w1 <- createWorld(minPxcor = 0, maxPxcor = 4, minPycor = 0, maxPycor = 4)
pSelect <- nOf(agents = patches(w1), n = 5)

# Turtles
t1 <- createTurtles(n = 10, coords = randomXYcor(w1, n = 10))
tSelect <- nOf(agents = t1, n = 2)