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

Examples

w1 <- createWorld(minPxcor = 0, maxPxcor = 4, minPycor = 0, maxPycor = 4) t1 <- createTurtles(n = 10, world = w1) of(agents = t1, var = "heading")
#> [1] 169.76217 220.71269 353.50096 127.83442 326.49468 341.31058 318.61398 #> [8] 223.80648 78.17190 21.20544
t1 <- left(turtles = t1, angle = 180) of(agents = t1, var = "heading")
#> [1] 349.76217 40.71269 173.50096 307.83442 146.49468 161.31058 138.61398 #> [8] 43.80648 258.17190 201.20544