StCokriging: ordinary space-time cokriging of variable 0 under a
separable intrinsic coregionalisation with exponential space and time
correlations. DiffusionStCovariance: covariance of a Gaussian field
propagated by the diffusion equation. Identical to the Python arm
morie.fn.stcokrig.
Usage
StCokriging(
coords,
times,
variable,
values,
targets,
target_times,
coreg,
range_s,
range_t,
nugget = c(0, 0)
)
DiffusionStCovariance(h, u, sigma2 = 1, xi = 1, diffusivity = 1, dim = 2)Arguments
- coords
Observation coordinates (two-column).
- times
Observation times.
- variable
Variable index (0 or 1) of each observation.
- values
Observed values.
- targets
Prediction coordinates.
- target_times
Prediction times.
- coreg
2 by 2 coregionalisation matrix.
- range_s, range_t
Exponential ranges.
- nugget
Nuggets of the two variables.
- h, u
Spatial and temporal lags.
- sigma2, xi
Initial variance and correlation length.
- diffusivity
Diffusion coefficient.
- dim
Spatial dimension.