Ode

The bulirsch-Stoer single-step ODE propagator has come to MATLAB in form of a MEX adaptation of Juergen Dietel's Numerical ODE solver. This may very well be the fastest single-step numerical propagator released on the Mathworks FileExchange.All functions are written in c++ and must be compiled to... Platforms: Matlab

The script shows two plots; the time response and the phase plane for different initial conditions depending on the coordinates of the mouse pointer. Platforms: Matlab

The equation PDE (PDE) partial differential heat is infrequent Apers develloppement I associate a dynamical system (ODE) after discreisation space for an associated dipole matrix (A, B) according to the theory of kernel JCWillems in control Automatic heat equation. Platforms: Matlab

The modele pacemaker VI1 is an non linear ODE of 2 variables,V the potential of membrane cell and I1 a current variable of excitation.dV/dt=P(V,I1,K) dI1/dt=Q(V,I1,K) where K is the cardiac vector parameters of dim 8.All the polynomials P and Q are rational coefficients with commun divisor C and... Platforms: Matlab

This program presents the solution to an ode model of the circadian clock, published by Locke et al (2005) 'http://www.nature.com/msb/journal/v1/n1/full/msb4100018.html', in two different ways.A moving plot can show either time series or a limit cycle in 2D or 3D mode, with the user able to... Platforms: Matlab

Numerical solutions for the conversion of an isothermal axially dispersed plug flow reactor accomplishing first and second order reactions are obtained. The Danckwerts boundary conditions for the so-called "closed" configuration are used. We use the shooting method since it is a... Platforms: Matlab

Single tank system nonlinear model was develop & finding the operating point of it using script file of the matlab with solving of ode for it and ploting the response Platforms: Matlab

This toolbox contains a collection of m-files which may be used to numerically solve discretized ODE/PDEs on a Chebyshev grid. Included are scripts for building differentiation matrices, enforcing boundary conditions using either the Laczos Tau method or Galerkin basis functions, spectral... Platforms: Matlab

Features:1. the program calculates the matter power spectrum, temperature spectrum, polarisation- and cross-correlation spectrum of a curved or flat Friedman-Robertson-Walker universe.2. it calculates the age of the universe, sigma8 and the age of the first start formation.3. massless neutrino's,... Platforms: Matlab

This is an example from new book "MATLAB i Simulink, poradnik uzytkownika" by Bogumila and Zbigniew Mrozek,to be published by Wydawnictwo Helion, Poland.A problem was how to provide additional parameter beta to ODE solver ode23. This was solved without using global variables.In "oscillator.m"... Platforms: Matlab

The m-file imsl2c.m (IMSL to 'C') automates the process of writing the source code for C MEX files which, in turn, call routines in the IMSL numeric libraries. These libraries are included in the professional version of DEC's Digital Visual Fortran. The mat-file imsl.mat contains structures that... Platforms: Matlab

%%%%%%%%%%%%%%%%%% EULER_modified_ODE.m %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% Euler modified approximation method to solve IVP ODEs% f defines the function f(t,y)% t0 defines initial value of t% y0 defines initial value of y Platforms: Matlab

%%%%%%%%%%%%%%%%% EULER_backward_ODE.m %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% Euler modified approximation method to solve IVP ODEs% f defines the function f(t,y)% t0 defines initial value of t% y0 defines initial value of y Platforms: Matlab

% [t, y]=EULER_forward_ODE(f, t0, y0, tend, Niter)% Euler forward approximation method to solve IVP ODEs% f defines the function f(t,y)% t0 defines initial value of t% y0 defines initial value of y Platforms: Matlab

RODASP is a fourth order ROW-method for solving ODEs y'=f(t,y) and Index-1 DAE problems M y' = f(t,y).Usage is the same as ode23s or other MATLAB ode-solver. Platforms: Matlab

If you're like me and have to run some ODE solvers in remote computers via telnet/ssh, you will find this simple output function very handy.It just prints a progress bar in the console according to the status of the ODE. At the end of the computation prints the time between the initialization of... Platforms: Matlab

This model works, but only when the solver ode14x is used. Solver ode 23t generates many warnings. Platforms: Matlab

Visual Calculus is an easy-to-use calculus grapher for Graphing limit, derivative function, integral, 3D vector, double integral, triple integral, series, ode etc. Which can create 2D, 2.5D and 3D function graphs, animations and table graphs. 2D Features: explicit, implicit, parametric, and in... Platforms: Windows, Windows 7, Windows Server

Fortran Calculus Compiler: Calculus level computer languages are Fortran Calculus and PROSE. Both languages are based on what is called "Automatic Differentiation" (AD). Calculus languages simplify computer coding to an absolute minimum; i.e., a mathematical model, constraints, and the objective... Platforms: *nix

Scorched 3D project is a game based loosely (or actually quite heavily now) on the classic DOS game Scorched Earth "The Mother Of All Games". Scorched 3D adds amongst other new features a 3D island environment and LAN and internet play. Scorched 3D is totally free and is available for both... Platforms: *nix