arctan2: Arc-tangent
In FuzzyNumbers: Tools to Deal with Fuzzy Numbers

Description Usage Arguments Details Value See Also Examples

The arc-tangent of two arguments arctan2(y, x) returns the angle between the x-axis and the vector from the origin to (x, y) for PiecewiseLinearFuzzyNumbers.

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## S4 method for signature 
## 'PiecewiseLinearFuzzyNumber,PiecewiseLinearFuzzyNumber'
arctan2(y, x)

`y`	a PiecewiseLinearFuzzyNumber
`x`	a PiecewiseLinearFuzzyNumber

Note that resulting values are no longer from interval [-pi,pi] but [-1.5pi,pi], in order to provide valid fuzzy numbers as result.

Returns a fuzzy number of the class PiecewiseLinearFuzzyNumber indicating the angle specified by the input fuzzy numbers. The range of results is [-1.5pi,pi].

Other PiecewiseLinearFuzzyNumber-method: Arithmetic, Extract, PiecewiseLinearFuzzyNumber-class, PiecewiseLinearFuzzyNumber, ^,PiecewiseLinearFuzzyNumber,numeric-method, alphaInterval(), as.PiecewiseLinearFuzzyNumber(), as.PowerFuzzyNumber(), as.TrapezoidalFuzzyNumber(), as.character(), expectedInterval(), fapply(), maximum(), minimum(), necessityExceedance(), necessityStrictExceedance(), necessityStrictUndervaluation(), necessityUndervaluation(), plot(), possibilityExceedance(), possibilityStrictExceedance(), possibilityStrictUndervaluation(), possibilityUndervaluation()

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y = as.PiecewiseLinearFuzzyNumber(TriangularFuzzyNumber(-2, 3, 5), knot.n = 9)
x = as.PiecewiseLinearFuzzyNumber(TriangularFuzzyNumber(-4.8, -4, 1.5), knot.n = 9)
arctan2(y,x)