Class JacobianFunction

  • All Implemented Interfaces:
    Function<Vector,​Matrix>, RntoMatrix

    public class JacobianFunction
    extends Object
    implements RntoMatrix
    The Jacobian function, J(x), evaluates the Jacobian of a real vector-valued function f at a point x. J(x) has the same domain as f(x).
    • Constructor Detail

      • JacobianFunction

        public JacobianFunction​(RealVectorFunction f)
        Construct the Jacobian function of a real scalar function f.
        Parameters:
        f - a real scalar function
    • Method Detail

      • evaluate

        public Matrix evaluate​(Vector x)
        Description copied from interface: Function
        Evaluate the function f at x, where x is from the domain.
        Specified by:
        evaluate in interface Function<Vector,​Matrix>
        Parameters:
        x - x
        Returns:
        f(x)
      • dimensionOfDomain

        public int dimensionOfDomain()
        Description copied from interface: Function
        Get the number of variables the function has. For example, for a univariate function, the domain dimension is 1; for a bivariate function, the domain dimension is 2.
        Specified by:
        dimensionOfDomain in interface Function<Vector,​Matrix>
        Returns:
        the number of variables
      • dimensionOfRange

        public int dimensionOfRange()
        Description copied from interface: Function
        Get the dimension of the range space of the function. For example, for a Rn->Rm function, the dimension of the range is m.
        Specified by:
        dimensionOfRange in interface Function<Vector,​Matrix>
        Returns:
        the dimension of the range