NAME
    FML::Demo::Chart - handle chart structure (demonstration module).

SYNOPSIS
DESCRIPTION
    "CAUTION:" This module is created just for a demonstration to show how
    to write a module intended for personal use. This module is not enough
    mature nor secure.

  CHART
    The chart, which is a kind of Gantt chart, is based on matrix as
    follows:

                1st column  2nd column 3rd column  ...
       row 1st     todo       who        01/01     01/02 ...
       row 2nd       a        rudo         o
       row 3rd       b        kenken                 o
       ...

    The x axis is date by default but in almost cases, the x axis must be a
    combination of "todo entry", "person", "end of developement", "date"
    array.

METHODS
  new($args)
    constructor.

BASIC OPERATIONS
  add($x, $y, $value)
    add $value at the position ($x, $y) where $y is expected to be a date
    e.g. 2006/01/01.

  delete($x, $y)
    delete value at the position ($x, $y).

DATE RANGE OPERATIONS
  set_date_range($min_date, $max_date)
    set range of the date column.

PRINTING METHODS
  print_as_html_table()
    print as HTML table.

  print_as_Chart()
    print as Chart.

UTILITY
  set_format($format)
    set format where $format is ARRAY_REF.

  get_format
    return format ARRAY_REF.

  set_alias($alias)
    set alias where $alias is HASH_REF.

  get_alias
    return alias HASH_REF.

CODING STYLE
    See "http://www.fml.org/software/FNF/" on fml coding style guide.

AUTHOR
    Ken'chi Fukamachi

COPYRIGHT
    Copyright (C) 2005,2006 Ken'chi Fukamachi

    All rights reserved. This program is free software; you can redistribute
    it and/or modify it under the same terms as Perl itself.

HISTORY
    FML::Demo::Chart first appeared in fml8 mailing list driver package. See
    "http://www.fml.org/" for more details.

    Firstly this module name is "TinyScheduler.pm" and renamed to
    Calendar::Lite later. In 2004, it is renamed to FML::Demo::Chart again
    since this module must depend FML::* classes.