Is it possible to call and run a different script for switched cases without changing the called function?

I have two scripts: one preparing/analysing data and the other plotting it. The analysis part filters signals; I would like to run this twice with the use of different filters and settings separately to see the change in the resulting plots. I know I can run the second script twice using a for-loop and inserting an IF/switch statement in the analsying part, but I wondered if something like this can be done from the 'calling' script, so i dont have to temper the other.

This is a snip of the analysis part (1):

 switch runFilt
            case 1
        fcut = 400;      % [Hz] 
        [B,A] = butter(1, fcut / (fsample/2),'low');
 
            case 2
        fcut = 10;      % [Hz] 
        [B, A] = cheby1(5,0.9,fcut/(fsample/2),'low');
            otherwise 
                return
        end
        matrix(5,:) =  filtfilt(B, A, matrix(5,:));
        matrix(6,:) =  filtfilt(B, A, matrix(6,:));
        processing{end+1} = ['Low-pass ', num2str(fcut), ' Hz'];
        

Snip of the calling function part (2):

        for runFilt = 1:2 % number of scenarios
% Calling other scripts
step1_prepdata
step2_analyze_data

line06_m1 = nan(1,4);
line10_m1 = nan(1,4);
line14_m1 = nan(1,4);

line06_m2 = nan(1,4);
line10_m2 = nan(1,4);
line14_m2 = nan(1,4);

for ii = 1:4
    
    switch runFilt
        case 1
    % M1
    line06_m1(1,ii) = mean(m1(1).area(:,ii,2));
    line10_m1(1,ii) = mean(m1(1).area(:,ii,3));
    line14_m1(1,ii) = mean(m1(1).area(:,ii,4));
    
    ButterM1 = [line06_m1; line10_m1; line14_m1];
    
        case 2 
    line06_m1(1,ii) = mean(m1(1).area(:,ii,2));
    line10_m1(1,ii) = mean(m1(1).area(:,ii,3));
    line14_m1(1,ii) = mean(m1(1).area(:,ii,4));
  
    ChebyM1 = [line06_m1; line10_m1; line14_m1]; % store to compare
  
        otherwise 
            return
    end
end

If anyone knows how to process part(1) into part(2) that would be very helpful. The reason is, I need to do several of these scenario-changes and I don't want to change a lot in such a large code. Thanks in advance.

Answer 1

[Shashwat Bajpai]

The customer wants to call another script from the present script without changing the content of the script being called.

Answer:

Hi,

I understand that you are trying to call your analyzing script in the calling script to and plot the results with different filters and values.

I suggest you write the analyzing script as a function and call it with different arguments so that you don’t have to change the contents of the script and it can be called as many times as desired. An example of the function can be as follows:

function [matrix,processing]=Filter(switch_case) 

    %Your code here 

end 

For more help on creating and using functions please refer the following link:

https://www.mathworks.com/help/matlab/ref/function.html