PHP-Chart
Version 0.0.3
(c) 1999-2002, chris.huebsch@informatik.tu-chemnitz.de

This Software is freeware under the GPL.

0. Requirements: PHP with GD-Lib installed.

  PHP: http://www.php.net/
  GD: http://www.boutell.com/gd/

1. Installing

  If PHP and GD are running, there is nothing to be installed.
  Just put chars.php into a directory of
  your webserver. 
  (Attention: .php files have to be bound to the PHP-Preprocessor.)

2. Usage

Functions return a PNG-Image-File.

Just use <img src="file_to_generate_a_chart.php">

3. Parameters

3.1 MakeBarChart(1) or MakeLinePointChart(2)
                                                     required 
   Name        Description                           (1)  (2) 
   -------------------------------------------------------------------
   width       the widht of the image  [Pixels]       y    y
   height      the height of the image [Pixels]       y    y
   caption     a Title for the Chart                  n    n
   xCaption    a subtitle which is displayes 
                 below the X-Axis                     n    n
   yCaption    the same but for Y-Axis                n    n
   xScale      if set to 1 each data-element gets an
                 explanation below the bar            n    n
   yScale      each horizontal Line gets its value
                 printed beneath                      n    n
   xValues     if set to 1 the value of the bar is
                 printed over the bar or beside the Points
                                                      n    n
   yCount      the number of dashed horizontal lines  n    n
   yMax        the maximum Value to be displayed in
                 the Chart                            y    y
   yMin        the minimum Value to be displayed in
                 the Chart                            n    n
   value<n>    the value for bar Nr. n                y    -
   value<n>_<m> the value for bar Nr. n               -    y 
   scale<n>    the title for this bar           only if xScale==1
   linecount   the number of different lines          -    y
   valueCount  the number of different values         y    y
   bullets     display a small bullet on the line     -    n
   lineOffset  the number of _half_ rows the lines are 
                 shifted to the right                 -    n
   numberFormat a FormatingString for yScale and 
                 printed value  (3                     n    n

(3) see http://www.tu-chemnitz.de/docs/php-3.0/function.sprintf.html

4. Questions an recomendations

   chris.huebsch@informatik.tu-chemnitz.de

5. Change-Log

0.0.1 Initial Release

0.0.2 - new Diagram LinePointChart
      - Formating of numbers

6. Thanx to
  Vaughn Dickson