This function computes values from a Logistic transition function.
Usage
tr.func(tr.par, tr.var)
Arguments
tr.par
a vector of parameters $(2 \times 1)$
tr.var
a vector of transition variable $(T \times 1)$
Value
a vector of transition function $(T \times 1)$
References
Ter"asvirta, T. (1994):
Specification, Estimation, and Evaluation of Smooth Transition Autoregressive Models,
Journal of the American Statistical Association,
89, 208--218.