phase()

ODE Solvers

phase() is a MATLAB®-compatible ode solvers function for generate a phase portrait for a 2d ode system. shows vector field (quiver arrows), sample trajectories, and equilibrium points with stability classification (stable node/spiral, unstable, saddle, center). one-liner visualization of dynamical systems. Run it online in your browser with SimLab — free, no install, no license required.

▶ Try phase() in SimLab — Free

Syntax

phase(f, [-4 4], [-3 3])

phase(f, xrange, yrange, struct('trajectories', 12))

Examples — run phase() in your browser

% Pendulum
phase(@(t,y) [y(2); -sin(y(1))], [-4 4], [-3 3])

▶ Run

% Damped oscillator
phase(@(t,y) [y(2); -0.5*y(2) - 2*y(1)], [-3 3], [-3 3])

▶ Run

More ODE Solvers Functions

Browse other free, MATLAB®-compatible ode solvers functions in SimLab:

ode45()ode23()ode15s()ode23s()

Browse all 510+ SimLab functions →

Frequently Asked Questions about phase()

Is the phase() function free to use in SimLab?

The browser workspace requires no MATLAB® license or installation. Connected features require network access and may have account, tier, availability, or usage limits. You can open phase() and 510+ other MATLAB®-compatible function references at simulations4all.com/simlab.

Do I need to install MATLAB to use phase()?

No. SimLab’s core parser, workspace state, and most functions run locally in your browser. The phase() function requires no MATLAB® license or desktop software download.

What does phase() do?

Generate a phase portrait for a 2D ODE system. Shows vector field (quiver arrows), sample trajectories, and equilibrium points with stability classification (stable node/spiral, unstable, saddle, center). One-liner visualization of dynamical systems. It is a MATLAB®-compatible ode solvers function available in SimLab with the same calling syntax as MATLAB® — typically: phase(f, [-4 4], [-3 3]).

Can I run phase() in my browser?

Yes. Open SimLab at simulations4all.com/simlab, write or paste code that calls phase(), and run it. This function’s calculation runs locally in the browser. SimLab session analytics, sharing, feedback, and eligible acceleration have separate network boundaries.

Try SimLab — MATLAB®-compatible, free, in your browser

510+ functions. Runs in your browser. No install. No license.

Open SimLab

MATLAB® is a registered trademark of The MathWorks, Inc. SimLab is an independent project by Simulations4All and is not affiliated with, endorsed by, or sponsored by The MathWorks, Inc.