omega_root: This is the target function whose zero is searched to crete...

In ecor/RGENERATEPREC: Tools to Generate Daily-Precipitation Time Series

This is the target function whose zero is searched to crete the inverse function of omega.

Description

This is the target function whose zero is searched to crete the inverse function of omega.

Usage

omega_root(
  x = 0.5,
  p0_v1 = 0.5,
  p0_v2 = 0.5,
  p00 = p0_v1 * p0_v2,
  correlation = NA
)

Arguments

x	value of expected correlation between the corresponding Gaussian-distributed variables
p0_v1, p0_v2	probablity of no precipitatin occurrences for the v1 and v2 time series respectively.
p00	probability of no precipitation occurrence in both v1 and v2 simultanously returned by omega
correlation	numerical value. DEfault is NA. Binary correlation retured by omega when the argumet correlation=TRUE

Value

the value p00-omega(x=x,p0_v1=p0_v1,p0_v2=p0_v2) or correlation-omega(x=x,p0_v1=p0_v1,p0_v2=p0_v2) (if correlation is not NA)

Note

This function makes use of normal copula

Author(s)

Emanuele Cordano

See Also

normalCopula,pcopula,omega,omega_inv

Examples

rho <- 0.4
p00 <- omega(x=rho,p0_v1=0.5,p0_v2=0.5)
omega_root(x=rho,p0_v1=0.5,p0_v2=0.5,p00=p00)

ecor/RGENERATEPREC documentation built on Feb. 3, 2023, 10:38 a.m.