A moving line plot in MATLAB figure with animation between 3 points

Hi everyone, I need help to do an animated line for known coordinates

for example :(x1,y1)=(2,1)

(x2,y2)=(3,2)

(x3,y3)=(4,2)

simply i can plot these lines , but don't know how to animate from one point to another point. How can i do this??

[Johannes Hougaard]

I'm not sure what you mean by 'animated line' - is it that the point should be moving slowly from x1,y1 to x3,y3 via x2,y2?

[Rajawarman Thiruselvam]

yes!!

[Rajawarman Thiruselvam]

exactly!

Answer 1

[Johannes Hougaard]

Could be something like this then...

It's super inefficient code and can definitely be improved in speed as well as complexity.

x = [2 3 4];
y = [1 2 2];
totaltime = seconds(10);
steptime = totaltime/length(x);
figure;
for ii = 1:length(x)-1
    npoints = 999;
    pointsx = linspace(x(ii),x(ii+1),npoints);
    pointsy = linspace(y(ii),y(ii+1),npoints);
    for jj = 1:npoints
        pause(seconds(steptime)/npoints);
        plot([x(1:ii),pointsx(jj)],[y(1:ii),pointsy(jj)],'-o');
        xlim([min(x)*.8 max(x)*1.2]);
        ylim([min(y)*.8 max(y)*1.2]);
    end
end

Answer 2

[Srijan Jain]

Hey,

I understand you're trying to animate a line between 2 points.

I would suggest you to look into: Update figures and process callbacks - MATLAB drawnow

Hope this helps

Srijan