NAMING THE FILE TO BE SAVED

Hello, I have a ECG feature extraction algorithm. I want to save the extracted feature matrix as a csv file. I have done it but each time I change the input ECG file, I'll have to change the name of the csv file. Is there a way to automatically change the output filename in accordance with the input name? This is what I've done so far

filename = 'features_100.csv';
T=table(RR_values, amp_Rpeak, QRS_dur , ST_seg);
writetable(T,filename)    ;

[Jan]

And what is the input file name? Please explain, how the file names are related, otherwise it is hard to suggest code to implement this relation.

[Jan]

Where does the name come from and how do you want to modify it for the output? The question still does not contain enough information to be answered - except I dare to guess, what you want. I guessed again, see [EDITED] in my answer.

Answer 1

[Jan]

Maybe you want to replace the file extension only:

InFile         = 'C:\Data\features_100.ecg';
[Folder, Name] = fileparts(InFileName);
OutFile        = fullfile(Folder, [Name, '.csv'])

But this is a guess only.

[EDITED] Perhaps your comment mean, that you have the number 100 or string '100' and want to insert it in the file name:

num = 100;
FileName1 = sprintf('features_%d.csv', num)

str = '100';
FileName1 = sprintf('features_%s.csv', str)

But this is still guessing.

[SSG_newbiecoder]

The infile is also a csv file

     X=xlsread('D:\mtech\PROJECT\Database\100\samples_10s.csv');

[Jan]

Okay. Now please clarify your question:

 Is there a way to automatically change the output filename in
 accordance with the input name?

Yes, I'm convinced that there is a method to change it automatically. To post it, you have to explain at first, how these names are related. For your input file name

'D:\mtech\PROJECT\Database\100\samples_10s.csv'

what is the wanted output file name? Don't you see, that you did not explain yet, what you want to get?

[SSG_newbiecoder]

Yeah I see, sorry about that. The record name is actually 100. so the output filename should be something like feature_100 or 100_features etc. So, even when I change the input record to the next one, 101 or 102 or whatever, I'll be able to recognise the output file.

[Jan]

InFile  = 'D:\mtech\PROJECT\Database\100\samples_10s.csv'
Parts   = strsplit(InFile, '\');
OutFile = fullfile(Folder, ['feature_', Parts{end - 1}, '.csv']);

[SSG_newbiecoder]

 Thank you