dqed_test


dqed_test, a Fortran90 code which calls dqed(), which solves (square) systems of nonlinear equations, or minimizes the residual in a set of nonlinear equations, using least squares, by Richard Hanson and Fred Krogh.

Licensing:

The information on this web page is distributed under the MIT license.

Related Data and Programs:

dqed, a Fortran90 code which solves (square) systems of nonlinear equations, or minimizes the residual in a set of nonlinear equations, using least squares, by Richard Hanson and Fred Krogh.

Source Code:

Problem 1 tries to fit data for a model of the heart. Several datasets are examined, exact and approximate jacobians are compared, and two equations are tried as constraints instead of equations.

Problem 2 tries to fit data.

Problem 3 tries to fit data.

Problem 4 is like problem 3, but is set up to solve a problem involving the absorption of carbon and nitrogen isotopes by an alligator from its prey.

Problem 5 shows how, if the nonlinear constrained system to be solved is actually a LINEAR constrained system, the user may call the DBOLS routine directly.


Last revised on 02 January 2011.