How to redirect matlab to previous section of coding?

basically i have a piece of coding which displays different tasks. the user gets to select which task they wish to perform. the last option allows them to pick all of them. how do i essentially tell matlab to go back and perform all these task one by one.

so what i have is: TASK 1 TASK 2 TASK 3 TASK 4 TASK 5 and TASK 6 which does all the above

how do i get matlab to run through parts of the previous coding when the user selects TASK 6. also, i don't want any separate m-files. everything must be in one script.

thank you, really appreciate any help

[Andrew Newell]

Why do you want it all in one script?

[Danial Logan]

the condition of this problem is everything must be in one script. if it was up to me I would use several function m-files.

Answer 1

[Guillaume]

The proper way, and the most simple: Have each task as a function in its own file. You may not like this solution but that's what you should do. Write simple self-contained functions that are easy to read, debug and understand

Slightly messier: Convert your script as a function, the tasks as private subfunctions of your main function. They can all be in the same file. Downside: not so easy to find each subfunction in a long file.

The unmaintanable way: Use a while loop in your script, and some switch statement for each task. Result: a big mess of spaghetti code, difficult to read, to debug and more importantly, impossible to reorganise.

Bottom line: use functions, that's what they're for.

[Danial Logan]

thanks for the excellent answer. regarding your last point. could you give me a little more guidance as to how i would go about doing the unmaintainable way

[Guillaume]

Actually, for the unmaintanable way, I would go with a for loop iterating over an ordered list of tasks to run rather than a while loop:

%build list of tasks to be run any way you want:
taskstorun = [1 2 3 4 3 3 1]; %for e.g.
for task = taskstorun
   switch task
      case 1
          %do task 1
      case 2
          %do task 2
      ...
   end
end