How can I run a matlab program N times using a different value of one of my variables

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Imagine a scenerio where I have a matlab program with N variables. I then want to make one of the variables a vector so I can run the program many times (length of the vector). I just intend to do this by calling the program in a loop. But each time I do that it's indicating that the variable be defined in the original program.
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Kareemmasud
Kareemmasud 2019년 6월 14일
Thanks Gonzalo and Adam. As I mentioned earlier, the code contains 100s of loops already and I would prefer to run the script in a loop. What I pasted above is just an example of the scenario and is not in anyway simple as the real program.
gonzalo Mier
gonzalo Mier 2019년 6월 14일
Thank you Adam, but I had the feeling it was not over.
mmmmm... ok, can you please add the code of the real problem or a closer example of your real problem so we have some idea about how to solve your question?
Help us to help you :)

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per isakson
per isakson 2019년 6월 15일
편집: per isakson 2019년 6월 15일
Assumptions:
  • You have a script. Lets call it myScript.
  • The first line of myScript is clear all
  • Near the top of myScript there is an assignment, e.g input = 17;.
  • In myScript a result is assigned to a variable, e.g. output = expression;
  • Now you want to run myScript with different values, e.g. [2,3,5,7,11,13,17], of the variable, input
Procedure
  • In myScript comment out the lines clear all and input = 17; Result: % clear all and % input = 17;
  • Create a script in a new file, e.g. loop_over_myScript
%% loop_over_myScript
vector = [2,3,5,7,11,13,17];
out_vector = [];
for vec = vector
input = vec;
myScript
% ignore the warning about growing in the loop
out_vector = [ out_vector, output ];
end
  • Beg that no variables named, vector, vec or out_vector, exist in myScript. (Renaming them vector__, vec__ and out_vector__ might decrease the risk of name collision.)
  • Run loop_over_myScript
  • Inspect out_vector, e.g with the Variables Editor
  • Run whos and be horrified by all the variables that litters the base workspace.

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