The reason dataArray only shows the last day of data is because you overwrite its value in each iteration of the loop. In each iteration, you read a new data file and assign its contents to dataArray, effectively discarding the previous data.
To plot the data within the loop without the need for the "Append data" section, you can move the plotting code inside the loop.
% Specify the folder where the files live.
myFolder = 'C:\Users\tbrob\OneDrive\SO298 (2023)\Data\MATLAB\WorkingFiles';
% Check to make sure that folder actually exists. Warn user if it doesn't.
if ~isdir(myFolder)
errorMessage = sprintf('Error: The following folder does not exist:\n%s', myFolder);
uiwait(warndlg(errorMessage));
return;
end
% Get a list of all files in the folder with the desired file name pattern.
filePattern = fullfile(myFolder, '*Es*.dat'); % The folder has 3 different file types; we only want the Es data from each day.
theFiles = dir(filePattern);
% Plotting setup
figure; % Create a new figure
subplot(2,1,1);
hold on; % Enable hold to overlay plots
subplot(2,1,2);
hold on; % Enable hold to overlay plots
% Process each file and plot the data
for k = 1 : length(theFiles)
baseFileName = theFiles(k).name;
fullFileName = fullfile(myFolder, baseFileName);
fprintf(1, 'Now reading %s\n', fullFileName);
% Read the data file
dataArray = readtable(fullFileName);
dataArray = table2array(dataArray);
% Extract relevant data for plotting
x = 320:2:950;
y = dataArray(:, 7:322);
L = y(1:2:end, :);
R = y(2:2:end, :);
% Plot the data
subplot(2, 1, 1);
plot(x, L);
subplot(2, 1, 2);
plot(x, R);
end
% Adjust plot labels, titles, etc. as needed
% The allDataArray has rows with NaN values and then the variable names at
% the beginning of each day, which we don't want, so just getting rid of them via the NaNs
rows = any(isnan(allDataArray), 2);
allDataArray(rows, :) = [];
% Plotting
x = 320:2:950;
y = allDataArray(:, 7:322);
L = y(1:2:end, :);
R = y(2:2:end, :);
subplot(2, 1, 1);
plot(x, L);
subplot(2, 1, 2);
plot(x, R);
With this updated code, each file's data will be plotted within the loop, removing the need for the "Append data" section. Note that I've added the necessary hold on statements to allow overlaying the plots on the same figure. You may need to adjust the plot labels, titles, etc., as per your requirements.
Please give a follow up if this is working, or if you need any more help.
