Issue in plotting of output after function
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Unable to plot output after function.
I gave my script below
syms theta
A = cos(theta).*[1 5 6; 2 9 3; 5 1 0];
B = tan(2*theta).*[8 5 1; 0 1 6; 2 4 7];
myfun = @(t,y)scriptname(t,y,A,B);
% dummy values for tspan and y0
tspan = [0 1];
y0 = [0; 0; 0];
% ode solver
sol = ode45(myfun,tspan,y0);
function dydt = scriptname(t,y,A,B)
V = [1; 5; 3];
% evaluation of A and B (numerical) with theta = y(3)
An = double(subs(A,y(3)));
Bn = double(subs(B,y(3)));
dydt = V-((An+Bn)*y);
end
for i=1.:3.
stator=y(:,i);
figure(1.);
subplot(2.,2.,i);
plot(t,stator);
xlabel('time');
ylabel('Current');
title(['stat current # ',int2str(i)]);
end
iam getting error like this
Function definitions in a script must appear at the end of the file.
Move all statements after the "scriptname" function definition to before the first local function definition.
How to resolve this??
Thanks in advance
0 个评论
采纳的回答
KSSV
2021-9-8
编辑:KSSV
2021-9-8
function myfun()
syms theta
A = cos(theta).*[1 5 6; 2 9 3; 5 1 0];
B = tan(2*theta).*[8 5 1; 0 1 6; 2 4 7];
myfun = @(t,y)scriptname(t,y,A,B);
% dummy values for tspan and y0
tspan = [0 1];
y0 = [0; 0; 0];
% ode solver
sol = ode45(myfun,tspan,y0);
%% Plot here
plot(sol.x,sol.y)
function dydt = scriptname(t,y,A,B)
V = [1; 5; 3];
% evaluation of A and B (numerical) with theta = y(3)
An = double(subs(A,y(3)));
Bn = double(subs(B,y(3)));
dydt = V-((An+Bn)*y);
Save the aboove code in myfun.m and run it.
10 个评论
KSSV
2021-9-8
figure
plot(sol.x,sol.y(1,:))
figure
plot(sol.x,sol.y(2,:))
figure
plot(sol.x,sol.y(3,:))
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