Function: framebounds
FRAMEBOUNDS  Frame bounds
  Usage: fcond=framebounds(F);
         [A,B]=framebounds(F);
         [...]=framebounds(F,Ls);

  FRAMEBOUNDS(F) calculates the ratio B/A of the frame bounds of the
  frame given by F. The length of the system the frame bounds are
  calculated for is given by L=framelength(F,1).

  FRAMEBOUNDS(F,Ls) additionally specifies a signal length for which
  the frame should work. The actual length used is L=framelength(F,Ls).

  [A,B]=FRAMEBOUNDS(F) returns the frame bounds A and B instead of
  just their ratio.


  'framebounds` accepts the following optional parameters:

    'fac'        Use a factorization algorithm. The function will throw
                 an error if no algorithm is available.

    'iter'       Call eigs to use an iterative algorithm.

    'full'       Call eig to solve the full problem.

    'auto'       Choose the fac method if possible, otherwise
                 use the full method for small problems and the
                 iter method for larger problems. 
                 This is the default. 

    'crossover',c
                 Set the problem size for which the 'auto' method
                 switches between full and iter. Default is 200.

  The following parameters specifically related to the iter method: 

    'tol',t      Stop if relative residual error of eighs is less than the
                 specified tolerance. Default is 1e-9 

    'maxit',n    Do at most n iterations in eigs. Default is 100.

    'pcgtol',t   Stop if relative residual error of pcg is less than the
                 specified tolerance. Default is 1e-6 

    'pcgmaxit',n Do at most n iterations in pcg. Default is 150.

    'p',p        The number of Lanzcos basis vectors to use.  More vectors
                 will result in faster convergence, but a larger amount of
                 memory.  The optimal value of p is problem dependent and
                 should be less than L.  The default value chosen 
                 automatically by eigs.

    'print'      Display the progress.

    'quiet'      Don't print anything, this is the default.

Url: http://ltfat.github.io/doc/frames/framebounds.html

See also: frame, framered.

Package: ltfat