Compute the difference between `headings`

.

```
subHeadings(angle1, angle2, range360 = FALSE)
# S4 method for numeric,numeric
subHeadings(angle1, angle2, range360 = FALSE)
# S4 method for agentMatrix,numeric
subHeadings(angle1, angle2, range360 = FALSE)
# S4 method for numeric,agentMatrix
subHeadings(angle1, angle2, range360 = FALSE)
# S4 method for agentMatrix,agentMatrix
subHeadings(angle1, angle2, range360 = FALSE)
```

## Arguments

- angle1
`AgentMatrix`

object representing the moving `agents`

, or

` Numeric. Vector of angles.`

- angle2
`AgentMatrix`

object representing the moving `agents`

, or

` Numeric. Vector of angles.`

- range360
Logical. If `range360 = TRUE`

, returned values are
between 0 and 360 degrees;
if `range360 = FALSE`

, returned values are between
-180 and 180 degrees.
Default is `range360 = FALSE`

.

## Value

Numeric. Vector of the smallest angles in degrees
by which `angle1`

could be rotated to produce `angle2`

(i.e., the target heading).

## Details

This function does the opposite as the one in NetLogo where
`angle1`

is the target heading.

```
`angle1` and `angle2` must be of the same length or if different,
one of them must be of length 1.
Positive values mean clockwise rotations, negative value mean
counterclockwise rotations.
```

## References

Wilensky, U. 1999. NetLogo. http://ccl.northwestern.edu/netlogo/.
Center for Connected Learning and Computer-Based Modeling,
Northwestern University. Evanston, IL.

## Examples

```
w1 <- createWorld(minPxcor = 0, maxPxcor = 9, minPycor = 0, maxPycor = 9)
t1 <- createOTurtles(n = 10, world = w1)
subHeadings(angle1 = t1, angle2 = 0)
#> [1] 0 -36 -72 -108 -144 -180 144 108 72 36
```