pne_pfcn_pseudo_arc_len

pne_pfcn_pseudo_arc_len(x, xp, step, zp)

pne_pfcn_pseudo_arc_len() - Pseudo arc length parameterization function for PNE.

[P, DP] = PNE_PFCN_PSEUDO_ARC_LEN(X, XP, STEP, ZP)

Inputs:
    X    : solution vector x (last element is parameter lambda)
    XP   : previous solution vector
    STEP : continuation parameter step size
    ZP   : normalized tangent vector at XP

This function defines a pseudo arc length parameterization for a PNE,
where the current point on the solution curve is constrained to lie in
the hyperplane running through the predicted solution orthogonal to the
tangent line from the previous corrected solution.

Outputs:
    P : value of parameterization function
    DP : Jacobian of paramerization function (transpose of gradient)

See also pne_pfcn_natural(), pne_pfcn_arc_len().