Plotting the element of a 3D array

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Yokuna
Yokuna el 11 de Nov. de 2022
Respondida: Walter Roberson el 11 de Nov. de 2022
The dimension of F is 2x2x145 (3D array), i.e. we have 145 number of 2x2 matrices. Now I want to find a vector having the (1,1)th element of all the matrices. How to obtain such vector having the (1,1)th element of all the matrices and then plot it with respect to time (T)?
M1 = [2 0;0 2];
odefun = @(t,y) part_a(t,y,M1);
[T,F] = ode45(odefun,[10 0],[2 0;0 2]);
F = reshape(F.',2,2,[]);
plot(T,F(1,1,:))
Error using plot
Data cannot have more than 2 dimensions.
function dy = part_a(t,y,M1)
F = reshape(y,size(M1));
FA = -M1*F;
dy = FA(:);
end

Respuesta aceptada

Walter Roberson
Walter Roberson el 11 de Nov. de 2022
plot(T, squeeze(F(1,1,:)))

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