Spatial covariance - Derivatives
Computes the gradient of the covariance vector c(x) computed by covMat1Mat2 with respect to x, for a given covariance structure.
covVector.dx(object, x, X, c)
object |
an object specifying the covariance structure. |
x |
a vector representing the specific location. |
X |
a matrix whose columns represent locations. |
c |
a vector containing the covariances between the location |
A vector of real numbers equal to the gradient of c as a function of x.
Olivier Roustant, David Ginsbourger, Ecole des Mines de St-Etienne.
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