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ScriptExecutionBaseAtan2(Double, Double) Method

Returns the angle whose tangent is the quotient of two specified numbers.

Namespace: Altaxo.Calc
Assembly: AltaxoBase (in AltaxoBase.dll) Version: 4.8.3572.0 (4.8.3572.0)
Syntax
C#
Copy
public static double Atan2(
	double y,
	double x
)

Parameters

y  Double
The y coordinate of a point.
x  Double
The x coordinate of a point.

Return Value

Double
An angle, θ, measured in radians, such that tan(θ) = y / x, where (x, y) is a point in the Cartesian plane. Observe the following: - For (x, y) in quadrant 1, 0 < θ < π/2. - For (x, y) in quadrant 2, π/2 < θ ≤ π. - For (x, y) in quadrant 3, -π ≤ θ < -π/2. - For (x, y) in quadrant 4, -π/2 < θ < 0. For points on the boundaries of the quadrants, the return value is the following: - If y is 0 and x is not negative, θ = 0. - If y is 0 and x is negative, θ = π. - If y is positive and x is 0, θ = π/2. - If y is negative and x is 0, θ = -π/2. - If y is 0 and x is 0, θ = 0. If x or y is NaN, or if x and y are either PositiveInfinity or NegativeInfinity, the method returns NaN.
See Also