covVector.dx {DiceKriging}R Documentation

Spatial covariance - Derivatives

Description

Computes the gradient of the covariance vector c(x) computed by covMat1Mat2 with respect to x, for a given covariance structure.

Usage

covVector.dx(x, X, covStruct, c)

Arguments

x a vector representing the specific location.
X a matrix whose columns represent locations.
covStruct an object of class covTensorProduct-class, specifying the covariance structure.
c a vector containing the covariances between the location x and the set of locations specified in X (see covMat1Mat2).

Value

A vector of real numbers equal to the gradient of c as a function of x.

Author(s)

Olivier Roustant, David Ginsbourger, Ecole des Mines de St-Etienne.

See Also

covMat1Mat2


[Package DiceKriging version 1.0 Index]