how create coordinate array?

It seems as a graph has no inherent shape, that you must provide the xy points for each node for it. The example in doc shows a Buckyball node layout.

I've never used gplot before. I read the help, read doc gplot, played a few minutes & have this.

 x = 1:2;
 y = 1:3;
 [XX,YY] = meshgrid(x,y);
 a = (rand([2*3,2*3])>0.8);
 P=[XX(:),YY(:)];
 gplot(a,P,'-*');
 axis([0,7,0,7]);
 a
 P

a =

   0     0     0     0     1
   0     1     1     0     1
   0     1     1     0     0
   0     0     0     0     0
   0     1     0     0     1
   0     1     0     1     1

P =

Maybe it will help a little?

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huda nawaf 2012-9-9

no walter, my erlier question is see the cluster visually. Now, I need see the nodes of adjacancy matrix how connect to each other.

that figure is not relate with the above matrix.

please, inform me how I can send image , then others see it. I think I sent image in previous time but nobody saw it.

thanks

Walter Roberson 2012-9-9

http://www.mathworks.com/matlabcentral/answers/7924-where-can-i-upload-images-and-files-for-use-on-matlab-answers

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Answer 2

Walter Roberson 2012-9-9

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https://ww2.mathworks.cn/matlabcentral/answers/47677-how-create-coordinate-array#answer_58305

If all you have is the adjacency matrix, then even if the weights of the vertices can be interpreted as distances, it is difficult to reconstruct a planar graph. Oh, algebraically it can be done, but it involves solving (N^2)/2 simultaneous non-linear equations, and that gets very time consuming extremely quickly.

So, you might as well just use rand() to generate random x and y coordinates and graph using those.