How to halt matlab plot3 scale

Question

I want to plot pendulum (which changes position) using plot3 function. Unfortunately, when my dot changes position in loop and is being plotted again, the scale of

Answer 1

Here is a short example in 2D, you can easily apply this also to 3D:

N = 50;
x = [1:N;N:-1:1];
x = repmat(x,2,1).';
p = plot(x(1),1,'ob','MarkerFaceColor','b');
xlim([0 51])
for k = 2:numel(x)
    p.XData = x(k);
    drawnow
end

The key here is to set xlim before the loop, and then only update the relevant data in the plot (using XData in this case).