Fractal MATLAB

Fractal code

• Fractal dimension of a data set 
  http://www.physik.tu-darmstadt.de./NLyzer/docs/html/help/NLdimension.html 
   

• FracLab
  http://fractales.inria.fr/index.php?page=download_fraclab 
   

• MathWorks ftp
  ftp://ftp.mathworks.com/pub/contrib/v4/math/fractal/   
   

• Fractal Dimension
  
  % FRACTDIM Compute the fractal dimension of an image
  %
  % D = fractdim(IMAGE)
  %
  % Calculates the fractal dimenstion (box-counting method) of a black and
  
  % white edge image.
  function D=fractdim(IMAGE)
  [M,N]=size(IMAGE);
  i=mod(M,4); j=mod(N,4);
  IMAGE(M+4-i,:)=zeros(1,N);
  IMAGE(:,N+4-i)=zeros(M+4-i,1);
  [i,j]=size(IMAGE);
  
  if M > N
   r=M;
  else
   r=N;
  end
  
  D = log(sum(reshape(IMAGE,i*j,1)))/log(r);
   

June 2010 - BHC