save the output data of GUI

I am testing the number of data file in my GUI, Now I want to store the output data of each file . My question is how can i incrementally save the output on a list.

Kp = getappdata(0,'Kp')

Kr = getappdata(0,'Kr')

if exist('myData.mat','file')

S=load('myData.mat');

gain=S.gain;

else

gain = struct('Kp','Kr');

gain.Kp = Kp;

gain.Kr = Kr;

end

save('myData.mat','gain');

it just stores the first data,,,please help

Answer 1

[Jan]

Kp = getappdata(0, 'Kp');
Kr = getappdata(0, 'Kr');
if isfile('myData.mat')  % older: exist('myData.mat','file') 
    S    = load('myData.mat');
    gain = S.gain;
    gain.Kp(end + 1) = Kp;
    gain.Kr(end + 1) = Kr;    
else
    gain.Kp =  Kp;
    gain.Kr =  Kr;
end
save('myData.mat', 'gain'); 

Hints:

• Store the data inside the GUI instead of the root object, where they are shared with all other applications, which write to the root object. This has the same drawbacks as using global variables.
• Do not rely on the current folder. A user can change the current folder, or a callback of the GUI. So add a specific folder to the file, e.g.

myPath = fileparts(mfilename('fullpath'));
file   = fullfile(myPath, 'myDFata.mat');
if isfile(file)
   S = load(file);
   ... etc.
end

Using absolute path names is safer.

[RJS]

Thank you @Jan, Now I am getting this variable on different sheet I want this two varable on same sheet side by side like in column format

[Jan]

Sheet? The MAT-files are binary files. What do you call "sheet" then?

[RJS]

I mean can I save this variable in excel sheet?

[Jan]

Yes, of course.