How do you integrate a set of matrix equations?

I have a set of 4 matrix equations (corresponding to a set of 12 equations) that I would like to integrate with some matrix initial conditions [3 x 3]. I don't think something like ode45 could accomplish this, as the initial conditions must be an array.

Answer 1

[James Tursa]

Reshape them as vectors to pass into ode45. Then in your derivative routine, reshape back to matrix form to do your matrix calculations. Then reshape the matrix result back to a vector to pass out as an output.