Transform Spacetime SPDE Model Parameters to Original Scale
Source:R/util.R
transform_parameters_spacetime.RdThis function takes a vector of transformed parameters and applies the appropriate transformations to return them in the original scale for use in spacetime SPDE models.
Arguments
- theta
A numeric vector containing the transformed parameters in this order:
- lkappa
The logarithmic representation of kappa.
- lsigma
The logarithmic representation of sigma.
- lgamma
The logarithmic representation of gamma.
- logit_rho (optional)
The logit-transformed representation of rho, if drift = 1.
- logit_rho2 (optional)
The logit-transformed representation of rho2, if drift = 1 and d = 2.
- st_model
A list containing the spacetime model parameters:
- d
The dimension (e.g., 1 or 2).
- bound
The bound for rho and rho2.
- is_bounded
A logical value indicating if rho and rho2 are bounded.
- drift
A logical value indicating if drift is included in the model.
Value
A named list with the parameters in the original scale:
- kappa
The original scale for kappa (exponential of lkappa).
- sigma
The original scale for sigma (exponential of lsigma).
- gamma
The original scale for gamma (exponential of lgamma).
- rho (optional)
The original scale for rho.
- rho2 (optional)
The original scale for rho2, if d = 2.