partial.deriv.ssm {SSM} | R Documentation |
Compute second partial derivative of a smooth supersaturated model at all design points.
Description
Computes a second partial derivative of a smooth supersaturated model at a design point. Used in the computation of distance measures based on local smoothness.
Usage
partial.deriv.ssm(indices, ssm)
Arguments
indices |
A vector of integers specifying the two variables by which we take the partial derivatives with respect to. |
ssm |
An SSM object. |
Value
A single column vector containing the second partial derivatives with respect to the requested variables, evaluated at all design points.
[Package SSM version 1.0.1 Index]