Index of the variable you wish to receive information on.
Value
An R list object with components:
ErrorCode
Zero if successful, nonzero otherwise.
pnNnz
Number of nonlinear nonzeros in column j.
panNLProws
An integer array containing the row indices of the nonlinear nonzeros in the jth column of the constraint matrix.
padNLPcoef
A double array containing the current values of the nonzero coefficients in the jth column of the coefficient
(Jacobian) matrix with respect to the last primal solution computed during the iterations.