Report the coordinates of the patches
at the given
distances of the turtles
in the direction of their headings
.
patchAhead(world, turtles, dist, torus = FALSE) # S4 method for worldNLR,agentMatrix,numeric patchAhead(world, turtles, dist, torus = FALSE)
world 


turtles 

dist  Numeric. Vector of distances from the 
torus  Logical to determine if the 
Matrix (ncol
= 2) with the first column pxcor
and the second column
pycor
representing the coordinates of the patches
at the distances dist
and turtles
's headings
directions
of turtles
. The order of the patches
follows the order of the turtles
.
If torus = FALSE
and the patch
at distance dist
of a turtle
is outside the world
's extent, 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 ComputerBased Modeling, Northwestern University. Evanston, IL.
w1 < createWorld(minPxcor = 0, maxPxcor = 9, minPycor = 0, maxPycor = 9) t1 < createTurtles(n = 10, coords = randomXYcor(w1, n = 10)) patchAhead(world = w1, turtles = t1, dist = 1)#> pxcor pycor #> [1,] 8 6 #> [2,] 3 0 #> [3,] NA NA #> [4,] 2 8 #> [5,] 6 2 #> [6,] 2 7 #> [7,] NA NA #> [8,] 4 2 #> [9,] 1 9 #> [10,] NA NA