Why is the run option greyed out here? What am I doing wrong with this function?

[Bruno Luong]

Your live-script + function body are empty

[Kevin Burke]

How can i fix this? I am doing an assignment that asked for a nested function with two outputs and three inputs inside of a parent function with just three inputs. Maybe I interpreted this incorrectly.

[Bruno Luong]

You need somehow to call the main function, and the main function needs somehow calling the nested function. Otherwise they just sitting there doing nothing.

Answer 1

[Cris LaPierre]

It is grayed out because you must call a function with inputs in a live script. See the note at the bottom of this page:

"Running live functions in the Live Editor using the Run button is only supported in MATLAB Online™. When you run a live function using the Run button, the output displays in the Command Window. To run a live function in an installed version of MATLAB, call the function from the Command Window or from a script or live script."

To test your functions in the live editor using the run button, add the following line before your functions. You will then be able to use the Run button.

physics(10,0,52)

Your nested function is never called by the parent function, so will never run.

Also, the point of a function is to call it with various inputs. Therefore, it should be unnecessary to define velocity, height, and angle inside your function when those are your input variables. Your code is replacing the input values with the hard coded values.

[Kevin Burke]

I added that line "physics(10,0,52)" to my code and tried several different lcations but the run button is still greyed out.

[Cris LaPierre]

[Kevin Burke]

Is it possble that my matlab is bugged?

[Cris LaPierre]

Try restarting MATLAB

[Les Beckham]

You are still never actually calling the dist_vel function.

Try adding this line of code immediately after the function physics(v,h,a) line

[velocity, time] = dist_vel(v,h,a)