How can I combine data from multiple files and save as one file

I have short script that allows me to automatically plot but I can't combine them and save them as one x,y coloumn file. Can somebody help me?

myDir = uigetdir;                                                        
myFiles = dir(fullfile(myDir,'*.txt'));                             
Fig = figure('visible', 'off');

for i = 1:length(myFiles)    
    fileName = myFiles(i).name;                                         
    data = dlmread(fullfile(myDir,fileName),'\t',1,0);                 
    PV=data(:,1);                                         
    WA=data(:,3);                                          
    plot(PV, WA, 'Color', [0 0.4470 0.7410]);
    hold on    
    clearvars data PV WA                          
end

print(Fig,fullfile(myDir,strcat('Fig_',fileName(1:end-9),'.fig')),...      
    '-djpeg','-r300');  
fprintf('\n- Number of .txt files: %s.\n',num2str(i))

Above works.. but then I can't combine these data and plot as one file with 2 coloumb data (so I can edit them in another software such as origin)

I tried below but does not work..

open filename.fig

a = get(gca,'Children');

xdata = get(a, 'XData');

ydata = get(a, 'YData');

Also if I try to open save fig files manually from command savefig, it is simply all broken letters OR get error message 'Not a binary MAT-file. Try load -ASCII to read as text.'

Is there any simple command that allows me to combine and have one clean text file? Can somebody help me?

[Santosh Gnanasekaran]

There is an option of combining mutiple pdf using the below command

append_pdfs('Test_Plot.pdf', pdfFile.name);

You could also try "append" option in MATLAB

[Jan]

@Santosh Gnanasekaran: append_pdfs is not a function of Matlab's toolboxes. Maybe you mean https://www.mathworks.com/matlabcentral/fileexchange/31215-append_pdfs

@sherbet ice: You confuse data, graphics, fig-files and data files massively. Please explain clearly, what yopu want to achieve. FIG files are binary MAT files, so they do not contain "broken letters", but compressed data.

Answer 1

[Jan]

If you want to join the contents of files, creating a figure is a useless indirection. Better join the files instead.

Do the files contain headers?

outFID = fopen(fullfile(myDir, 'Output.txt'), 'w');
for i = 1:length(myFiles)    
    fileName = myFiles(i).name;
    data     = fileread(fullfile(myDir,fileName));
    if i == 1
        fwrite(outFID, data, 'char');
    else  % Skip first line:
        dataC = strsplit(data, char(10));
        fprintf(outFID, '%s\n', dataC{2:end});
    end
end
fclose(outFID);