MATLAB: Animate 2D line object

animate line 2d

Hi,

I'm trying to animate a line object, which should traslate sinusoidally in the vertical axis and rotate sinusoidally with respect to a point of the same line both at the same time.

Thanks in advance for your attention.

Javi

Edit: Maybe I've been too brief. I'm trying to plot it in a GUI's axes. The thing is that with rotate and traslate commands I can't make it describe the movement I want, because the rotation center is moving as well (it belongs to the line). It should be inside a while (so that it moves until user pushes stop button), so I guess that inside rotate and translate should be a function, as well as for the origin or rotation center. I hope this clarifies the question.

Best Answer

See the animatedline() function. From the help:

Description
h = animatedline creates an animated line that has no data and adds it to the current axes. Add points to the line in a loop to create a line animation. For more information, see Using animatedline Objects.

I've also attached a demo of making a movie from a plot/graph that you create.

Related Solutions

MATLAB: How to rotate an axis about an arbitrary point in MATLAB 7.10 (R2010a)

To rotate an axis about an arbitrary point in MATLAB 7.10 (R2010a), first set the Axis’ CameraTarget property to the desired center of rotation. Then use the Camera Toolbar’s ‘Orbit Camera’ icon (located on the left end of the Camera Toolbar) to interactively rotate the axis. For an example, please refer to the sample code below:

%create a sample Figure to work with
mesh(peaks)
%define an arbitrary center of rotation and plot it
CenterOfRotation = [10,10,0]
hold on
plot3(CenterOfRotation(1),CenterOfRotation(2),...
      CenterOfRotation(3),'o')
%Set the Camera's target to the specified center of rotation
set(gca,'CameraTarget',CenterOfRotation)
%Open the Camera Toolbar
CameraToolbar

MATLAB: How to get the new coordinates of a point after rotation of an image (2D)

P = [5;8];    % coordinates of point
alpha = 45;   % angle for rotation
RotatedIm = imrotate(im,alpha);   % rotation of the main image (im)
RotMatrix = [cosd(alpha) -sind(alpha); sind(alpha) cosd(alpha)]; 
ImCenterA = (size(im)/2)';         % Center of the main image
ImCenterB = (size(RotatedIm )/2)';  % Center of the transformed image
RotatedP = RotMatrix*(P-ImCenterA)+ImCenterB;

Best Answer

Related Solutions

MATLAB: How to rotate an axis about an arbitrary point in MATLAB 7.10 (R2010a)

MATLAB: How to get the new coordinates of a point after rotation of an image (2D)

Related Question