Rotate to the left

Rotate the turtles's headings to the left of angle degrees.

left(turtles, angle)

# S4 method for agentMatrix,numeric
left(turtles, angle)

Arguments

turtles

AgentMatrix object representing the moving agents.

angle

Numeric. Vector of angles in degrees by which to rotate the turtles' headings. Must be of length 1 or of length turtles.

Value

AgentMatrix representing the turtles with updated heading values.

Details

If a given angle value is negative, then the turtle rotates to the right.

References

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

See also

https://ccl.northwestern.edu/netlogo/docs/dictionary.html#left

Author

Sarah Bauduin

Examples

w1 <- createWorld(minPxcor = 0, maxPxcor = 4, minPycor = 0, maxPycor = 4)
t1 <- createTurtles(n = 10, world = w1)
of(agents = t1, var = "heading")
#>  [1] 312.240921 242.952158  76.653912 274.975458 322.265120 310.233096
#>  [7] 278.026411 321.396068  48.928347   3.765036
t1 <- left(turtles = t1, angle = 180)
of(agents = t1, var = "heading")
#>  [1] 132.24092  62.95216 256.65391  94.97546 142.26512 130.23310  98.02641
#>  [8] 141.39607 228.92835 183.76504