CommunityID/libs/jpgraph

README FOR JPGRAPH
==================

This package contains JpGraph, an Object Oriented PHP5 Graph Plotting library.

The library is Copyright (C) 2001-2008 Aditus Consulting and
released under dual license QPL 1.0 for open source and educational
use and JpGraph Professional License for commercial use. 

Please see full license details at http://www.aditus.nu/jpgraph/

* --------------------------------------------------------------------
* PHP4 IS NOT SUPPORTED IN THIS 2.x SERIE
* --------------------------------------------------------------------

* --------------------------------------------------------------------
* Note: Due to a bug in PHP5 make sure that the compatibility mode for
*       PHP4 is disabled by setting (in php.ini)
*
*       zend.ze1_compatibility_mode = Off
* --------------------------------------------------------------------


Included files
--------------
README	                This file
QPL.txt                 QPL 1.0  Licensee

/src
  Changelog			Changelog
  jpg-config.inc.php		Configuration setup for JpGraph
  jpgraph.php			Base library
  jpgraph_log.php		Extension: logarithmic scales
  jpgraph_line.php		Extension: line plots 
  jpgraph_bar.php		Extension: bar plots
  jpgraph_date.php		Extension: date scale
  jpgraph_flags.php		Extension: Country flags
  jpgraph_error.php		Extension: error plots
  jpgraph_scatter.php		Extension: scatter/impulse plots
  jpgraph_radar.php		Extension: radar plots
  jpgraph_pie.php		Extension: pie plots
  jpgraph_canvas.php		Extension: drawing canvas
  jpgraph_canvtools.php		Extension: utility classes for working with canvas
  jpgraph_pie3d.php		Extension: 3D pie plots
  jpgraph_gantt.php		Extension: Gantt chart
  jpgraph_regstat.php		Extension: Statistics and cubic splines.
  jpgraph_stock.php		Extension: Stock and box plots.
  jpgraph_gradient.php		Extension: Color gradient class
  jpgraph_gb2312.php		Extension: Chinese GB2312 to Unicode translation
  jpgraph_imgtrans.php		Extension: Basic image transformation
  jpgraph_flags.php		Extension: Country flags
  jpgraph_iconplot.php		Extension: Use image icons in plots
  jpgraph_polar.php		Extension: Polar plots
  jpgraph_plotband.php		Extension: Plotbands in graphs
  jpgraph_plotmark.inc.php	Extension: Using plotmarks in graphs
  jpgraph_mgraph.php		Extension: Multi graph extension
  jpgraph_utils.inc.php		Extension: Various non-mandatory utility classes
  imgdata_*.inc			Extension: Encoded images for plot marks
  flags*.dat			Image data: Pre-compiled data for country flags.

/src/Examples		A directory with example sripts.
			Run testsuit.php to get a list of all
			files and you can easily click on a file to
			see the code and the resulting image.
		
/docs			Directory with all documentation				
/docs/index.html	Documentation portal

			
Requirements:
-------------
Miminum:
* PHP 5.1.0 or higher 
* GD 2.28 or higher
Note: Earlier versions might work but is unsupported.

Recommended:
* PHP 5.1.2
* PHP Builtin GD library

Installation
------------
0. Make sure that the PHP version is compatible with the stated requirements
   and that the PHP installation has support for the GD library. 
   Please run phpinfo() to check if GD library
   is supported in the installation. 
   If the GD library doesn't seem to be installed 
   please consult the PHP manual under section "Image" for
   instructions on where to find this library. Please refer to
   the manual section "Verifying your PHP installation"
   
1. Unzip and copy the files to a directory of your choice where Your
   httpd sever can access them. 
   For a global site installation you should copy the files to 
   somewhere in the PHP search path. 

2. Check that the default directory paths in jpg-config.inc
   for cache directory and TTF directory suits your installation. 
   Note1: The default directories are different depending on if
   the library is running on Windows or UNIX.
   Note2: Apache/PHP must have write permission to your cache 
   directory if you enable the cache feature. By default the cache
   is disabled.

3. Check that all rest of the DEFINE in jpg-config.inc 
   is setup to your preference. The default should be fine
   for most users. (See also Note 3. below)
   
4. Read (really!) the FAQ on http://www.aditus.nu/jpgraph/jpg_faq.php.


Documentation
-------------
The installation includes HTML documentation and reference guide for the
library. The portal page for all the documentation is
<YOUR-INSTALLATION-DIRECTORY>/docs/index.html


Troubleshooting
---------------
1. If an empty page is returned back when running an example check
   the following

      i) Make sure output_buffer is disabled in php.ini
     ii) Increase the maximum memory allowed by PHP (in php.ini) to at least
         32MB
    iii) Enable all error messages and notices in php.ini (error_reporting = E_ALL)

   Then try running the example again. Most likely an error message will
   now be shown that will give further information on what is wrong.
   For further clarifiction on the casues for the error messages see
   the FAQ section on the WEB site.

1. If you are running IIS and Win2k and get the error "Can't find
   font' when trying to use TTF fonts then try to change you paths
   to UNIX style, i.e. "/usr/local/fonts/ttf/". Remember that the
   path is absolute and not relative to the htdocs catalogue. Some 
   versions of GD for Windows also need you to set the environment
   variable GDFONTPATH for GD to find the fonts.

2. If you are using the cache please make sure that you have
   set the permissions correctly for the cache directory so that
   Apache/PHP can write to that directory.

3. Some windows installations seems to have a problem with a PHP
   script ending in a newline (This newline seems to be sent to the
   browser and will cause a Header already sent error). 
   If you have this problem try remove all trailing newlines in the
   jpgraph* files 


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