Description Usage Arguments Value References
View source: R/willoughby2006eqs.R
Calculates values of both the function and the derivative of the function for which you are trying to solve the root in Eqn. 3 (the version using the dual exponential profile) of Willoughby et al. (2006).
1 | will3_deriv_func(xi, eq3_right)
|
xi |
A numerical value for ξ from Willoughby et al. (2006), Eqn. 2 |
eq3_right |
A numerical value with the right-hand side of Willoughby
et al. (2006), Eqn. 3, the dual-exponential version. This value is
calculated at each storm observation point using the
|
A numeric vector of length two. The first value is the calculated value of f'(x) for x = ξ, while the second value is the calculated value of f(x) for x = ξ. These two values are used in iterating through the Newton-Raphson method to determine ξ.
Willoughby HE, Darling RWR, and Rahn ME. 2006. Parametric representation of the primary hurricane vortex. Part II: A new family of sectionally continuous profiles. Monthly Weather Review 134(4):1102-1120.
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