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] 214.36738 21.11466 27.17594 73.92248 135.55823 93.46426 113.55146 #> [8] 137.74776 287.45786 53.92181
t1 <- left(turtles = t1, angle = 180) of(agents = t1, var = "heading")
#> [1] 34.36738 201.11466 207.17594 253.92248 315.55823 273.46426 293.55146 #> [8] 317.74776 107.45786 233.92181