Apply script to multiple data files and save specific workspace outputs

Hi!

I have a script to analyse ECG that I run and gives me multiple outputs, from which I want to save a specific one with a specific name.

So, I run the script, that starts loading the data file like this, for example:

%:::::::::::::::::::::::::::::::::::::::::::::::::::::  Path Initialization
rootCV=[char(pwd) '\'];
ecgPathConfig(rootCV);
display  =0;
% maximise =OPTION.M;
% default=0;
%   datPath  = [rootCV 'ECG_DAT\MIT\' ];     % path
%   datFile  = 'cu01.dat';                   % file name

%==========================================================================
%::::::::::::::::::::::::::::::::::::::::::::::::::: Load and PreProcessing
%
%¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨ Data File
signal = load('EKG_AB16_D1.txt'); %Example of the name of a file 

DAT.Path = 'C:\Users\myPath';
DAT.File = 'EKG_AB16_D1.txt';
DAT.Format = 0; DAT.Samp = 500; DAT.Ini = 1; DAT.ECG = signal;
%From here there is the code itself 

It will gives me multiple outputs and I want to save a struct named WAVES with the name WAVES_AB16_D1.

The thing is that I have a lot of participants I want to analyse. The .txt files have always the following name format:

EKG_AB16_D1.txt , EKG_AB16_D2.txt, EKG_AB16_G1.txt, EKG_AB16_G2.txt, EKG_AB17_D1.txt, EKG_AB17_D2.txt, EKG_AB17_G1.txt, EKG_AB17_G2.txt , etc

So I want to save the correspondent data file WAVES with the name of the partipant in the front. Is it possible to do this all at once or I have to do it manually?

Answer 1

[Hrishikesh Borate]

Hi,

Assuming that the EKG_AB16_D1.txt, EKG_AB16_D2.txt, etc. files are stored in a directory called inputData, following code demonstrates loading these files and saving the output in the desired format.

inputDataPath = fullfile(pwd,'inputData');
inputDataFiles = dir(fullfile(inputDataPath, '*.txt'));
for i=1:length(inputDataFiles)
    signal = load(fullfile(inputDataFiles(i).folder, inputDataFiles(i).name));
    
    % Perform processing on the signal
    
    old = {'EKG','txt'};
    new = {'WAVES','mat'};
    outputFileName = replace(inputDataFiles(i).name,old,new);
    save(outputFileName, 'WAVES');
end

For more information, refer replace.

[Ana Gabriela Guedes]

Thank you!!

Just 2 more questions:if I can save an image gaven by the script to each file how can I do it?

And if I want to save more than 1 output I just have to add it to new = {'WAVES','mat'} ?