getting x and y values and writing them

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Mohamed Turkmani
Mohamed Turkmani 2022-8-16
评论： Mohamed Turkmani 2022-8-16
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");
end
nCyl = 1;
t=0:(1/sample):(nCyl/freq);
x=sin(2*pi*freq*t);
axes(handles.axes1);
plot(t,x);
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?

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采纳的回答

KSSV
KSSV 2022-8-16
编辑：KSSV 2022-8-16
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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