Delila Program: keymat

keymat program

Documentation for the keymat program is below, with links to related programs in the "see also" section.

{   version = 5.40 ; (* of keymat.p 2010 Nov 24}

(* begin module describe.keymat *)
   keymat: keyed-matrices for helices between two books

   keymat(xbook: in, ybook: in, hlist: in, kmlist: out,
          keymatp: in, output: out)

   xbook: a book from the delila system
   ybook: a book from the delila system.  If you want to look for
      structures in one sequence, then use the program copy to make
      a copy of xbook in ybook.
   hlist: the helix listing for xbook and ybook made by program helix
   kmlist: the matrices listed out.  Sequences from the x book are printed
      vertically, while those from the y book are horizontal.
      Depending on the parameters selected in keymatp, the helices are
      printed as either numbers representing the type of base pair,
      the actual base from the xbook, the actual base from the ybook,
      or a symbol representing the energy of the helix.
      If kmlist is wider than your printer, use the split program.
   keymatp: parameters to control the kmlist
      if keymatp is empty, default values are used.  Otherwise, keymatp
      must contain at least 3 lines.
         line 1: contains a positive integer - the minimum length helix to
            record from hlist into kmlist;
         or a negative real number - the maximum energy of a helix to
         record from hlist to kmlist.
         line 2: contains 2 positive integers greater than or equal to 1.
            These are the x and y scaling factors (respectively) which
            allow you to display large matrices in a small space by
            scaling them down.
         line 3: contains either 'n', 'x', 'y', or 'e',  which define what
             symbols will be printed for the helices in the kmlist.
            'n' - helices will be printed as a set of numbers:
                  1 = g-t bp    2 = a-t bp    3 = g-c bp
            'x' - helices will contain the base from the x-book sequence.
            'y' - helices will contain the base from the y-book sequence.
            'e' - a key symbol for the energy of each helix will be printed.
               The program will produce a table of energies and their
               corresponding key symbols.
               Note: the third parameter request is overridden when either
               scale factor is larger than 1.
         line 4: resolution of energy display.  This defines
                 the resolution of the matrix w/respect to
                 energies.  Used when line 3 is 'e'.
            'n' - numbers ('0' to '9') used for the keys
            'l' - numbers ('a' to 'z') used for the keys
            'a' - numbers ('a' to 'z' and '0' to '9') used (not available)
   output: messages to the user

   Keymat produces a keyed-dot matrix for the two books.  The display
   can use numbers and letters to indicate the energy of various helixes.
   One major feature is the ability to compress large regions onto a page
   using scaling factors.
   Only helices of some length (or longer) or of some maximum energy (or less)
   are printed.  The helices are made using program helix.
   This program was based on the matrix program.

   J. V. Maizel, Jr. and R. P. Lenk PNAS 78: 7665-7609 (1981)

see also
   helix.p, dotmat.p, matrix.p, split.p

   patrick r. roche
   If maximum energy is strongest helix, the program may object.
   The alphanumeric range does not work.  It bombs with a 'bus error'
   as it reads in the x piece.
(* end module describe.keymat *)
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