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] 2.796158 202.471384 219.078588 137.410553 149.028916 28.610072 #> [7] 238.699147 102.805717 250.756620 342.884828
t1 <- left(turtles = t1, angle = 180) of(agents = t1, var = "heading")
#> [1] 182.79616 22.47138 39.07859 317.41055 329.02892 208.61007 58.69915 #> [8] 282.80572 70.75662 162.88483