Continuous plot in MATLAB

Question

I have a loop in my code and I want to plot some variables,

In each iteration I plot a new point and I want it to be connected to the previous point.

Here is

Answer 1

You can use the plot handle and then update the properties 'XData' and 'YData' accordingly. Therefore you can plot the first point before the loop and generate the plot handle. After that, the plot handle is available and the plot can be adjusted within the loop.

n  = 500;
Fs = 1000;
f1 = 10;
t  = (0 : n - 1) / Fs;
s = zeros(size(t));
s(1) = sin(2 * pi * f1 * t(1));
figure
handle = plot(s(1), t(1), 'bo-'); %// the plot handle
for i = 2 : n
    s(i) = sin(2 * pi * f1 * t(i));
    set(handle, 'XData', t(1:i), 'YData', s(1:i)) %// update the plot data
    axis([0 t(end) -1 1]);
    pause(0.1) %// small pause to see animation
end