File: nehari.cat

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scilab 2.6-4
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nehari            Scilab Group            Scilab Function            nehari
NAME
   nehari - Nehari approximant
  
CALLING SEQUENCE
 [x]=nehari(R [,tol])
PARAMETERS
 R    : linear system (syslin list)
      
 x    : linear system (syslin list)
      
 tol  : optional threshold
      
DESCRIPTION
   returns the Nehari approximant of R.
  
   R = linear system in state-space representation (syslin list).
  
   R is strictly proper and - R~ is stable  (i.e. R is anti stable).
  
     || R - X ||oo = min || R - Y ||oo
                   Y in Hoo