Delila Program: live

live program

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

{   version = 1.60; (* of live.p 2014 Jun 23}

(* begin module *)
   live: LIster waVEs

   live(book: in, livep: in, livemarks: out, output: out)


   book:  A book from the delila system.

   livep:  parameters to control the program.  The file must contain the
        following parameters, one per line:

      1. The version number of the program.  This allows the user to be
         warned if an old parameter file is used.

      2. zerobase: character and one integer OR one integer.  The coordinate
         to set the phase of the wave by.  This base will be red.

         If the first character is 'f' then the first base is the zerobase.

         If the first character is 'l' then the last base is the zerobase.

         When the first character is 'f' or 'l', it is followed by the
         zerobase as an offset.  So f 0 is the first base, f 1 is the second
         base, etc.

         If the first character is not 'f' or 'l' then an integer is given
         that is the external coordinate of the zero base.
         (NB: prior to 2014 Jun 19 this was the "phase offset".)

         When a set of coordinates are used (6th parameter and beyond), 'f'
         and 'l' apply to each coordinate pair.  As a result, the phases of
         the colors WILL NOT MATCH.  If neither 'f' nor 'l' are used, then
         there is only one zero base for all pairs, so THE PHASES WILL

      3. wavelength: one real.  The wave length in bases.  Usually there are
         10.6 base pairs per turn of DNA, but using 10.0 allows checking the
         program.  It can have other useful value, for example, one can set
         it to 3 to see translation frames.

      4. wavevertical (real):  how much to move the colored bar up or down
         (in character heights = bits).  This is preadjusted (by a constant
         (shiftdown) to fit just between the lister map numbering and the

      5. waveheight (real):  the height of the colored bar (in character
         heights = bits).  0.25 is the normal value that fits the line
         between the lister map numbering and the sequence.

      6. and all following lines: firstbase lastbase: two integers per line.
         The first and last bases to create marks for.  There may be an
         indefinite number of lines.  You can also use the program with
         different parameters and concatenate the livemarks files together.
         WARNING:  Coordinate systems can jump in the Delila system, so this
         method will fail across jumps.  You can set the ranges by hand.
         This method can be used to mark only portions of the sequence.
         The program bookends can be used to find the end numbers of book

         IF PARAMETERs 6 ARE MISSING then the book will be used to obtain the
         coordinate system.  This method should always work, but it gives
         live marks for the entire book.

   livemarks:  marks for the lister program

   output: messages to the user

   The program makes waves for lister by using the marks definition.  The
   waves are colored strips on the number line (or wherever the lister line
   starts).  The strip shows the phase of the DNA, allowing the orientation
   of binding sites to be compared.

   Since lister marks must be in order of the coordinate system, integrating
   the live marks with other marks would require a lot of hand editing.  The
   mergemarks program allows marks to be smoothly joined together.


1.34      version of live that this parameter file is designed for.
f 0       zerobase: to set the phase of the wave by.  This base will be red.
10.6      wavelength: The wave length in bases.  Usually 10.6.
0         wavevertical: amount to shift colored wave vertically
0.25      waveheight: height of colored wave

Optionally, there can be:

-150  92  firstbase lastbase: range of sequence to mark
... (any number of repeats of the last line above may be made)


   See below.

see also
   example parameter file: livep
   the program that uses the livemarks: lister.p
   another program that could use live marks:  makelogo.p
   a program to merge livemarks with others:  mergemarks.p
   a program to obtain the range of a book:  bookends.p

   Documentation on how the Live program produces the color wave:

   Publication that uses this technique:
   Discovery of Fur binding site clusters in
   Escherichia coli by information theory models
   NAR 35: 6762 (2007),
   Figure 5

   Thomas Dana Schneider


   When one gives a pair of coordinates, live creates marks running between
   the pair.  This will *fail* when there is a coordinate jump.  Also, it
   means that if the coordinate system is decreasing, the wave colors will be
   *reversed*.  When the book is used for coordinates, the wave is determined
   on internal (1 to n) coordinates and so the colors will never be
   reversed.  It is not clear yet whether the latter solution is a problem or
   not.  (Is it a bug or a feature?  :-)  Are there times when one would like
   the colors to reverse when the piece reverses?

   The code could be imbedded into lister.

technical notes

   The definition of the marks is in makelogo.p

   More information about the colors is in xyplo.p

(* end module *)
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