Class L8i ... Service routines for regression (e.g., matrix manipulation for variable selection)

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Modules for class L8i

• DRORDM (RORDM) Reorder rows and columns of a symmetric matrix.
• RORDM (DRORDM) Reorder rows and columns of a symmetric matrix.

• G02CEF Takes selected elements from two vectors (typically vectors of means and standar ...
• G02CFF Re-orders the elements in two vectors (typically vectors of means and standard d ...
• G04EAF Computes orthogonal polynomial or dummy variables for a factor or classification ...
• G10ZAF Orders and weights data which is entered unsequentially, weighted or unweighted.

• NAG_ORDER_DATA Orders and weights data which is entered unsequentially, weighted or unweighted.

• CV (DCV) Evaluate the variance function of the curve obtained by the constrained B-spline ...
• DCV (CV) Evaluate the variance function of the curve obtained by the constrained B-spline ...

• DCKLS Check user-supplied analytic derivatives. Features detailed documentation, exten ...
• DCKLSC Check user-supplied analytic derivatives. Features detailed documentation, exten ...
• STPLS Select optimum step size for computing finite difference derivatives. Features d ...
• STPLSC Select optimum step size for computing finite difference derivatives. Features d ...