Rotate to the left

Source: R/turtle-functions.R

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

Examples

w1 <- createWorld(minPxcor = 0, maxPxcor = 4, minPycor = 0, maxPycor = 4)
t1 <- createTurtles(n = 10, world = w1)
of(agents = t1, var = "heading")
#>  [1] 349.19542 224.14516 162.05979 103.94759  80.60326  47.86232 109.89710
#>  [8] 269.87545 157.68032 179.85000
t1 <- left(turtles = t1, angle = 180)
of(agents = t1, var = "heading")
#>  [1] 169.19542  44.14516 342.05979 283.94759 260.60326 227.86232 289.89710
#>  [8]  89.87545 337.68032 359.85000