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Is it possible to animate RandomGraph?

Matthew Luther
Posted 8 years ago

Would it be possible to animate between graph layouts or two random graphs? Thanks in advance.
POSTED BY: Matthew Luther
5 Replies
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Matthew Luther
Matthew Luther
Posted 8 years ago

Wow! I have much to learn about Mathematica and I truly appreciate your time and consideration. Thank you both.

POSTED BY: Matthew Luther

There isn't built-in functionality for this.

To do this, you would need to find the location of the vertices in both layouts and and interpolate between them.

Suppose you have two graphs:

old = Graph[EdgeList@PetersenGraph[5, 2], 
  GraphLayout -> "SpringEmbedding"]
new = Graph[EdgeList@PetersenGraph[5, 2], 
  GraphLayout -> "BalloonEmbedding"]

We can get the locations of the vertices:

oldVertexCoors = 
  VertexCoordinates /. AbsoluteOptions[old, VertexCoordinates];

newVertexCoors = 
  VertexCoordinates /. AbsoluteOptions[new, VertexCoordinates];

And then make a Manipulate that interpolates between these:

Manipulate[
 Graph[EdgeList@PetersenGraph[5, 2], 
  VertexCoordinates -> (oldVertexCoors + (newVertexCoors - 
        oldVertexCoors) t)], {t, 0, 1}]
POSTED BY: Sean Clarke

Very nice, @Sean! There is simpler GraphEmbedding:

oldVertexCoors=GraphEmbedding[old];
newVertexCoors=GraphEmbedding[new];

And it probably worth fixing image size:

Manipulate[Graph[
  EdgeList@PetersenGraph[5, 2], 
  VertexCoordinates -> (oldVertexCoors + (newVertexCoors - 
        oldVertexCoors) t), ImageSize -> {300, 300}], {t, 0, 1}]

enter image description here
POSTED BY: Vitaliy Kaurov
Matthew Luther
Matthew Luther
Posted 8 years ago

I would like to interpolate (opposed to snapping) between these randomized layouts: Demo 1: http://demonstrations.wolfram.com/TheRayPuzzle/ Demo 2: http://demonstrations.wolfram.com/AutomatedGraphLayout/

The layouts are being hard reset, I am wondering if there is a simple way to transition between them. Or if you know a technique that might suffice for this type of visualization.

Thanks for this reply, I appreciate it.

POSTED BY: Matthew Luther

I'm not sure what it would mean to animate between graphs. Esp between ones that aren't isomorphic. You could, I suppose, take the position of each vertex in the graph and then interpolate between them in some way.

Do mean Graphs? Or do you mean plots, like "x-y" plots of some function?

POSTED BY: Sean Clarke
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