Execution of script ode45 as a function is not supported ... Error in pop (line 12) [a,b] = ode45(@ypr​ime,[0,tfi​n],pinit);

Hi how do I fix this error message? Here is the code below.Im trying to plot logistic population growth.

global a

a = 2;

global b

b = 1;

tfin = 100; %tfin is the the length of time with you are solving for (time final)

pinit = 2.4; %establishes the initial p value, p(0)

[a,b] = ode45(@yprime,[0,tfin],pinit);

figure(1);

plot(a,b);

xlabel('Time')

ylabel('Population')

title('Logistic Population Growth')

[Alan Stevens]

You haven't shown what your yprime function looks like.

Answer 1

[Steven Lord]

You've written a script file ode45.m that's taking precedence over the ode45 function included in MATLAB. Check where that script file is located and rename or remove it.

which -all ode45

/MATLAB/toolbox/matlab/funfun/ode45.m
/MATLAB/toolbox/nnet/deep/@dlarray/ode45.m  % Shadowed dlarray method

If you see an ode45.m that's not in the toolbox/ directory that's likely the culprit. Leave the files in either of those two locations (you may or may not have the one in toolbox/nnet) alone.

If you don't have another ode45.m then it's possible the file has been corrupted.