Converting matrix multiplication into element-wise multiplication

Hi,

I'm using symbolic toolbox to solve non-linear differential equations.

It return an approximate solution with this formalism :

((Theta*w^2 - Theta*w0^2)^2 + (Theta^2*w^2*w0^2)/Q^2)^(1/2)

(Theta and w are two variables, and w0 and Q are two constants)

The aim is to replace Theta and w by grids :

Theta = linspace(0, 10, 1000);
w = linspace(0.1, 10, 501);
[w_grid, Theta_grid] = meshgrid(w, Theta);

((Theta_grid.*w_grid.^2 - Theta_grid.*w0.^2).^2 + (Theta_grid.^2.*w_grid.^2*w0^2)./Q^2).^(1/2)

It work perfectly, but i have to replace all the operators " * ", " / " and " ^ " by the operators " .* ", " ./ " and " .^ ", and then to change all the variables by the grids.

Is there a way to make this change automatically? For the moment, I have to do it manually.

Answer 1

[Star Strider]

I am not certain what you are doing, however it appears that using matlabFunction to convert the symbolic code to a form that can be used in numeric computations could do what you want.

[adrien ameye]

Thank, it works perfecly :)

[Star Strider]

As always, my pleasure!