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.

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] 135.94254 308.73954 178.15376  23.75399 289.58656 187.31959 217.32478
#>  [8]  86.74777 330.74791  65.77152
t1 <- left(turtles = t1, angle = 180)
of(agents = t1, var = "heading")
#>  [1] 315.942544 128.739538 358.153757 203.753988 109.586558   7.319586
#>  [7]  37.324778 266.747774 150.747910 245.771519