variogramSurface: Semivariance values for a given spatio-temporal variogram...

In gstat: Spatial and Spatio-Temporal Geostatistical Modelling, Prediction and Simulation

Semivariance values for a given spatio-temporal variogram model

Description

Generates a surface of semivariance values given a spatio-temporal variogram model (one of separable, productSum, sumMetric, simpleSumMetric or metric)

Usage

variogramSurface(model, dist_grid, covariance = FALSE)

Arguments

model	A spatio-temporal variogram model generated through vgmST or fit.StVariogram.
dist_grid	A data.frame with two columns: spacelag and timelag.
covariance	Whether the covariance should be computed instead of the variogram (default: FALSE).

Value

A data.frame with columns spacelag, timelag and gamma.

Author(s)

Benedikt Graeler

See Also

See variogramLine for the spatial version and fit.StVariogram for the estimation of spatio-temporal variograms.

Examples

separableModel <- vgmST("separable", 
                        space=vgm(0.86, "Exp", 476, 0.14),
                        time =vgm(   1, "Exp",   3, 0),
                        sill=113)

data(vv)

if(require(lattice)) {
plot(vv, separableModel, wireframe=TRUE, all=TRUE)
}

# plotting of sample and model variogram
plot(vv, separableModel)

gstat documentation built on Sept. 11, 2024, 7:46 p.m.