Hi All,
I have multiple text files from signal processing analysis. There are 3 columns of data: Time, Voltage A (transmitter), Voltage B (receiver). The text files are created during tests with repeated signals; that being said the time column and Voltage A (transmitter) column are identical.
I would like to open these N text files and read the 3rd column of data; populate a matrix with the data; and then average the data to remove background noise. I believe I have correctly implemented the opening and reading of the text files, I am unsure on how to populate a matrix for averaging the signals outside the loop. The trial code I have been working on calls on 20 separate text files. So far I have:
path='C:\data\';textFiles=dir([path '*.txt']);for k = 1:length(textFiles) textFilename = ['20110526-0001_' num2str(k) '.txt']; %Open text file, 'rt' is for reading a text file only
fopen(textFilename, 'rt'); %Read file into 3 seperate variables
[Time, Transmitter, Receiver] = textscan(fid,'%d%d%d','Headerlines',3); %Populate a cell array with data
data1=Time{i}; data2=Transmitter{i}; data3=Receiver{i}; %Close the text file
fclose(fid);end
I prefer to have one output matrix of 22 columns: Time, Receiver A, Receiver B(1:20) after which I would take an average of Receiver B data at each timestep. As you can see above, I am getting somewhat lost trying to populate a matrix inside the loop.
Any help is appreciated. Nick
Best Answer