Error: Function definitions are not permitted in this context

function s =  myode_detuning(t, G, omega_e,omega_c, Omega, gamma, topt, tau_opt, tspan, gammafunc)
gammafunc = interp1(tspan,gammafunc,t); % Interpolate the data set (ts,gammafunc) at time t

s =  [G(2) ; -omega_e^2 * G(1) + Omega^2 * G(3) - gammafunc * G(2) + sin(omega_c*t)*exp(-4*log(2)*(t-topt)^2/tau_opt^2); G(4) ; -omega_c^2 * G(3) + Omega^2 * G(1) - gamma * G(4)] ;

I run the code above on MATLAB R2016b to define function that's used in another MATLAB script (separate file).

tspan is defined in that another file.

However, I get errors below.

{Error: Function definitions are not permitted in this context.
} 
{Undefined function or variable 'tspan'.
} 
{Undefined function or variable 'G'.
} 

When I run this code using MATLAB R2019a it works fine.

What do I need to fix in order to run this in R2016b?

The code above is saved in a (.m) file.

[Adam Danz]

Please remember to provide the entire error message when reporting errors.

[Mai Sakuragi]

this is the entire error message I got.

[Adam Danz]

It doesn't look like a standard error message. I haven't seen an error message that appears in brackets. If the solution in my answer doesn't fix the problem, please attach the m-file.

[Mai Sakuragi]

I am runnnig the script using HPC, so it is a little different.

This is the screenshot. I get another error after adding "end".

Answer 1

[Adam Danz]

Starting in r2016b, functions can be defined within scripts but they must end with the end keyword.

For more information:

https://www.mathworks.com/help/matlab/matlab_prog/local-functions-in-scripts.html

[Mai Sakuragi]

This is what my script looks like.

I also attached the m-file.

[Adam Danz]

Hmmm... I'm not familiar with the Microsoft HPC Pack. Nevertheless, I notice two things.

1) The attached file is a function, not a script, so my answer doesn't address the problem if that's the complete file. Adding the 'end' keyword shouldn't cause an error wither the file is a function or a script.

2) The 1st screenshot under your question differs from the 2nd screenshot above. In the 1st screenshot I see the function definition line and the 'end' keyword but nothing between. I don't see anything in the 2nd screenshot (or the attached file) that would cause the errors you shared but it wouldn't surprise me if the function in the 1st screenshot threw errors.

Again, I'm unfamiliar with the HPC pack so there might be something I'm missing.

[Mai Sakuragi]

So I'm using Unix HPC Cluster. I am not sure if it's Microsoft HPC.

Anyway, whenever I run the code it creates an error file and an output file, and if there is any error, error message appears in the error file. The first screenshot is the message that appears in the error file. The original script is in the m-file.

[Mai Sakuragi]

I really don't know what is causing the error but I need to get the result using HPC because the memory on my PC is too small and just can't handle the large size computation that I am doing. Does anyone have any idea why??