getting x and y values and writing them

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hi, i have created a user interface that gets sampling frequency and frequency from the user and plots it by the following code:
function pushbutton1_Callback(hObject, eventdata, handles)
sample = str2double(get(handles.edit1,'string'));
freq = str2double(get(handles.edit3,'string'));
if freq ~= 1000 && freq ~= 2000 && freq ~= 1600 && freq ~= 4000
f = msgbox("Enter values within the frequency rules");
nCyl = 1;
my next step is to get the x and t values from the graph and write them all in a text file or a message text, how can i get the values of x and y that are plotted in the graph?

Accepted Answer

KSSV on 16 Aug 2022
Edited: KSSV on 16 Aug 2022
Already you have data in hand. If you want to write that into a file use:
data = [t(:) x(:)] ;
writematrix(data,'data.txt') ;
If you want to extract data from figure and write:
a = get(gca,'Children');
xdata = get(a, 'XData');
ydata = get(a, 'YData');
data = [xdata(:) ydata(:)] ;
writematrix(data,'data.txt') ;

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