How to include text in a running figure

Hi,

I'm very new to Matlab.

I'm running a 3D simulation that shows erosion on a landscape over time and I'd like it to record on the screen the timestep it's running for each frame so I can reference progress to a specific time.

What is the code I need that allows me to get the figure to display the timestep as it runs?

Any guidance would be much appreciated!

Answer 1

[KSSV]

You can use text/ title with sprintf.

for t = 1:100
  plot(rand(1,10)) ;
  title(sprintf("time step = %s",num2str(t))) ; 
  drawnow
end

[Alison Spera]

Thank you!

It still doesn't portray the passing timesteps but at least I know the code to bring up the title!

Answer 2

[Ameer Hamza]

Something like this

t = linspace(0, 2*pi);
y = sin(t);

ax = axes();
ax.XLim = [0 2*pi];
ax.YLim = [-1.5 1.5];
hold(ax);

h = animatedline(ax);
txt = text(pi/6, 1.3, 't=0', ...
    'HorizontalAlignment', 'left', ...
    'FontSize', 16);

for i = 1:numel(t)
    addpoints(h, t(i), y(i));
    txt.String = sprintf('t=%.2f', t(i));
    drawnow;
end

[Alison Spera]

That's what I'm after but when I try to add it to the code it sends the video into a fit haha

But thank you!

[Ameer Hamza]

How are you trying to make the video? What type of issue occurs?