Creating phase plot from initial data

33 views (last 30 days)
I have a data table with no associated function, is it possible to generate the vector field and phase diagram from this? GS.
Gavin Seddon
Gavin Seddon on 15 Nov 2017
You are welcome, I have tried the arc tangent with my table and it appears I should define two points and calculate the angle. Also I cannot calculate the gradient since it complains that my matrix is not equal, Possibly because I am using fxy (multivariate). Nevertheless I have been of data now to complete the job. GS.

Sign in to comment.

Accepted Answer

Star Strider
Star Strider on 30 Mar 2017
Use the gradient function to create the derivatives.
See if this works with your data:
x = sin(0:0.5:2*pi*2); % Create Data
y = cos(0:0.5:2*pi*2); % Create Data
u = gradient(x); % Calculate ‘x’ Derivative
v = gradient(y); % Calculate ‘y’ Derivative
quiver(x, y, u, v)
axis equal

Sign in to comment.

More Answers (0)

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by