We can achieve the concatenation of data from multiple ".txt" files into a single structure in MATLAB by first listing all files using the "dir" function and initializing empty arrays for each data column. We then loop through each file, import the data using "importdata", and append the data to the respective arrays. After processing all files, we create a structure with these concatenated arrays and save it as a ".mat" file for further analysis.
Below is the sample MATLAB code to achieve the same:
% Directory containing the .txt files
folderPath = 'your/folder/path'; % Change this to your folder path
filePattern = fullfile(folderPath, '*.txt');
txtFiles = dir(filePattern);
% Initialize empty arrays for concatenation
GPSTOW = [];
PRN = [];
EL = [];
AZ = [];
IPPMLat = [];
IPPGeoLong = [];
IPPGeoLat = [];
SlantCodeTEC = [];
SlantSmoothTEC = [];
VTEC = [];
% Loop through each file
for k = 1:length(txtFiles)
baseFileName = txtFiles(k).name;
fullFileName = fullfile(folderPath, baseFileName);
% Import data
data = importdata(fullFileName);
% Append data to arrays
GPSTOW = [GPSTOW; data(:,1)];
PRN = [PRN; data(:,2)];
EL = [EL; data(:,3)];
AZ = [AZ; data(:,4)];
IPPMLat = [IPPMLat; data(:,5)];
IPPGeoLong = [IPPGeoLong; data(:,6)];
IPPGeoLat = [IPPGeoLat; data(:,7)];
SlantCodeTEC = [SlantCodeTEC; data(:,8)];
SlantSmoothTEC = [SlantSmoothTEC; data(:,9)];
VTEC = [VTEC; data(:,10)];
end
% Create a single structure with all data
combinedData = struct('GPSTOW', GPSTOW, 'PRN', PRN, 'EL', EL, 'AZ', AZ, ...
'IPPMLat', IPPMLat, 'IPPGeoLong', IPPGeoLong, 'IPPGeoLat', IPPGeoLat, ...
'SlantCodeTEC', SlantCodeTEC, 'SlantSmoothTEC', SlantSmoothTEC, 'VTEC', VTEC);
% Save the combined structure to a .mat file
save('combinedData.mat', 'combinedData');
Please find attached the documentation of functions used for reference:
I hope this assists in resolving the issue.
