# covMatrixDerivative

From DiceKriging v1.5.6
by Olivier Roustant

##### Covariance matrix derivatives

Computes a partial derivative of the covariance matrix `C`

in function `covMatrix`

.

##### Usage

`covMatrixDerivative(object, X, C0, k, ...)`

##### Arguments

- object
an object specifying the covariance structure.

- X
a matrix whose columns represent locations.

- C0
a matrix corresponding to the covariance matrix for the locations specified in the X argument, when there is no nugget effet nor observation noise.

- k
an integer representing the partial derivative index.

- …
additional parameters, typically an environment used for storage

##### Value

A matrix representing the partial derivative of `C`

##### See Also

*Documentation reproduced from package DiceKriging, version 1.5.6, License: GPL-2 | GPL-3*

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