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Version: $Id: README,v 1.1 2002/12/11 09:41:57 kripper Exp $
README FOR JPGRAPH
==================
This is JpGraph 1.9.1 an Object Oriented PHP4 Graph Plotting library.
The whole libray is Copyright (C) 2001,2002 Johan Persson and
released under QPL 1.0
Included files
--------------
README This file
QPL.txt QPL 1.0 Licensee
/src
Changelog Changelog
jpgraph.php Base library
jpgraph_log.php Extension: logarithmic scales
jpgraph_line.php Extension: line plots
jpgraph_bar.php Extension: bar plots
jpgraph_error.php Extension: error plots
jpgraph_scatter.php Extension: scatter/impuls 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
/src/utils/misc Various _unsupported_ small utilities to do
image manipulation, create background images
and help create graphical DB schema.
/src/Examples A directory with around 210 example graphs with source.
Run jpgraph_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/manual/html/ Manual
/docs/manual/ref/ Class reference
Requirements:
-------------
Miminum:
* PHP 4.04 or higher
* GD 1.8.x or higher
Recommended:
* PHP 4.2.2
* GD 1.8.x or higher
CAVEAT:
To get background images working with GD 2.0.1 you MUST enable
Truecolor images by setting the constant USE_TRUECOLOR to true. If you
don't fo this the background images will just be a black rectangle.
The bad thing with this is that the antialias for Truetypes is broken
using truecolor images in GD 2.0.1. This means you can't have
background and TTF fonts in the same image.
You can find a bug fix for GD 2.01 and the TTF problem together
with Truecolor images at
http://www.coupin.net/gd-freetype/
NOTE: This bug fix has _nothing_ to do with JpGraph and I can't
guarantee anything nor answer any questions regarding this
specific fix.
Installation
------------
0. Make sure your PHP is AT LEAST 4.04 (preferrable 4.2.2)
and that you have compiled support for GD library.
You must make aboslutely sure that you have GD working.
Please run phpinfo() to check if GD library
is supported in your installation. Please not that JpGraph only
fully supports GD 1.x. There are known issues with GD 2.0.1 as
described in CAVEAT 2 above.
1. Unzip and copy the files to a directory of your choice.
2. Set up the directory paths in jpgraph.php where the cache directory
should be and where your TTF directory is. Note that Apache/PHP must
have write permission in your cache directory.
4. Check that all rest of the DEFINE in the top of JpGraph.php
is setup to your preference. The default should be fine
for most users. (See also Note 5. below)
Specifically check that the settings of USE_GD2_LIBRARY reflects
your installation, (should be true if you have GD2 installed,
false otherwise).
3. Make sure PHP have write privileges to your cache directory if
you plan on using the cache feature.
4. 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
5. It has been reported that PHP 4.06 under IIS has problem correctly
interpreting file paths. This can be solved by hardcoding the
CACHE_DIRECTORY and FONT_DIRECTORY const ants directly in the code
instead of using the defined constants.
6. Read (really!) the FAQ on http://www.aditus.nu/jpgraph/jpg_faq.php.
Troubleshooting
---------------
1. Any PHP errors about function "imagecreate" does not exist indicates that
your PHP installation does not include the GD library. This must be present.
2. Any error about "parent::" undefined means that you are not using PHP 4.02 or
above. You _NEED_ PHP 4.02 or higher. This problem has also been
reported to sometimes occur under Windows. This problem has also
been reported by people running Zend-cache and is a bug in Zend. A
workaround is to move all files into one single file.
3. If you don't get any background images (but rather a solid black
box) you are using GD 2.x but have forgotten to enable truecolor
support. Correct this by enabling the USE_TRUECOLOR define.
4. If background images does not work make sure the settings of
USE_GD2_LIBRARY corresponds to your installation, i.e. If you
don't have GD2 then this define must be false!
5. If you are running PHP 4.06 and get an error saying "GD was not
built with truetype support" you should know that this is a known
problem with GD+PHP 4.06. There are some workarounds (search the
net!) but it is really recommended that you instead upgrade to at least
PHP 4.1.1 and configure PHP with --with-gd-native-ttf
(Please also note that the built in TTF uses point size for fonts
whereas Truetype 2 uses pixels.)
Please DON't ask me how to resolve the GD Font problem. All mail
regarding this will go straight to /dev/null. Upgrade to 4.1.1!
6. 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.
7. 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.
8. If you have problem building GD 2.0.1 for PHP you might want
to try the following tip from Rasmus L.
----< QUOTE >----
Build GD 2.0.1 with these two lines in your GD2 Makefile
CFLAGS=-g -DHAVE_LIBPNG -DHAVE_LIBJPEG -DHAVE_LIBFREETYPE
LIBS=libgd.a -lpng -lz -ljpeg -freetype -lm
Don't install the lib anywhere, just leave it in the GD-2.1.1
directory.
Then build PHP using a minimum of:
--with-gd=/home/<your_dir>/gd-2.0.1
--with-freetype-dir=/use
--enable-gd-native-ttf
--enable-gd-imgstrttf
--with-jpeg-dir=/usr
--with-png-dir=/usr
--with-xpm-dir=/usr/X11R6
The above assumes you have freetype2 installed along with the
libjpeg and libpng libs under /usr
----< END QUOTE >----
Known problem
-------------
1. Image maps does not work with rotated images they assume that the
image is located at 0 degrees.
Bug reports and suggestions
---------------------------
Should be sent to (jpgraph aditus nu) [insert at and dot]
Change history:
------------------------------------------------------------------------
Date Ver Comment
------------------------------------------------------------------------
2002-10-30 1.9.1 Fixed glitch in 1.9
2002-10-25 1.9 TTF font change. Many small additional improvements
2002-09-17 1.8 Documentation update.
2002-09-09 1.8 BETA Functional improvements.
2002-07-05 1.7 Functional improvements. Rotated bar graphs.
2002-06-17 1.7 BETA Functional improvements.
2002-05-15 1.6.3 Enhancements to Gantt graphs anbd minor bug fixes.
2002-04-19 1.6.2 Addition of image maps for line and scatter plot
2002-04-07 1.6.1 Bug fixes for 3D pies and image maps for pie's
2002-04-01 1.6 Functional improvments
2002-04-01 1.6 BETA Beta candidate for 1.6
2002-03-01 1.5.3 Fix minor release problem in 1.5.2
2002-02-29 1.5.2 Minor bug fixes.
2002-02-11 1.5.1 Minor bug fixes.
2002-01-27 1.5 Functional improvements. Gantt charts.
2002-01-17 1.5-BETA2 Functional improvements, bug fixes
2001-12-16 1.5-BETA Functional improvements, gantt-charts, bug fixes.
2001-11-12 1.4 Functional improvements, bug fixes.
2001-09-23 1.3.1 Minor bug fixes
2001-09-13 1.3 Major functional enhancements and minor bugfixes
2001-04-29 1.2.2 Minor bug fixes. Addded background image support
2001-03-29 1.2.1 Minor bug fixes. Experimental support for 3D pie plots
2001-03-18 1.2 Second release see changes.txt
2001-02-18 1.1 Second release see changes.txt
2001-02-04 1.0 First public release
-------------------------------------------------------------------------
Stockholm/London 2002-10-30
Johan Persson (jpgraph aditus nu) [insert at and dot]
<EOF>