Description Usage Arguments Details Value Examples
View source: R/TrawlCorrelationFunctions.R
This function computes the autocorrelation function associated with the supIG trawl function.
1 |
x |
The argument (lag) at which the autocorrelation function associated with the supIG trawl function will be evaluated |
delta |
parameter in the supIG trawl |
gamma |
parameter in the supIG trawl |
The trawl function is parametrised by the two parameters δ ≥q 0 and γ ≥q 0 as follows:
g(x) = (1-2xγ^{-2})^{-1/2}\exp(δ γ(1-(1-2xγ^{-2})^{1/2})), \mbox{ for } x ≤ 0.
It is assumed that δ and γ are not simultaneously equal to zero. Its autocorrelation function is given by:
r(x) = \exp(δγ (1-√{1+2 x/γ^2})), \mbox{ for } x ≥ 0.
The autocorrelation function of the supIG trawl function evaluated at x
1 | acf_supIG(1,0.3,0.1)
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