PEKPIK : Search map for peaks

plimit specify peak search parameters

PEKPIK Option Code Arg   Def
  input map file bdf e file extension e map
  output peaks as atomlines npun   no output  
    punch   atomlines to pch  
  output peaks to bdf sfil   write peaks to pek  
    nfil   no output to pek  
  use symmetry in peak search sym   use all symops  
    nsym   no symops  
  search for peaks or holes nhol   peaks only  
    hole   holes only  

plimit 1 min point density used in peak search [a]  
    The following defaults apply, according to FOURR map type.  
    COEF= 1.0PATT= 10.0EPAT= 5.0VECT= 2.0  
    EMAP= 2.0FOBS= 1.0FDIF= 0.25FCAL= 1.0  
  2 min separation of resolved peaks in Ĺ 0.75
  3 max peaks output 50
      or 2*(non-H atoms)

[a] Automatically adjusted after searching first layer.