patchAhead: 'Patches' ahead

In NetLogoR: Build and Run Spatially Explicit Agent-Based Models

Patches ahead

Description

Report the coordinates of the patches at the given distances of the turtles in the direction of their headings.

Usage

patchAhead(world, turtles, dist, torus = FALSE)

## S4 method for signature 'worldNLR,agentMatrix,numeric'
patchAhead(world, turtles, dist, torus = FALSE)

Arguments

world	WorldMatrix or worldArray object.
turtles	AgentMatrix object representing the moving agents.
dist	Numeric. Vector of distances from the turtles. dist must be of length 1 or of length turtles.
torus	Logical to determine if the world is wrapped. Default is torus = FALSE.

Details

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.

Value

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.

Author(s)

Sarah Bauduin

References

Wilensky, U. 1999. NetLogo. https://www.netlogo.org. Center for Connected Learning and Computer-Based Modeling, Northwestern University. Evanston, IL.

See Also

https://docs.netlogo.org/dictionary.html#patch-ahead

Examples

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)

NetLogoR documentation built on Sept. 9, 2025, 5:27 p.m.