This is PNGgraph 1.10, a package to generate PNG charts, using Lincoln Stein's GD.pm. This is a direct port of GIFgraph 1.10 by Martien Verbruggen. INSTALLATION needed to install (also see TESTED PLATFORMS): perl 5.004 GD > 1.20 to install: perl Makefile.PL make make test make install NB: make test may report errors. If you are not using GD 1.20 this is normal. Because of differences in the way GD implements fonts and polygons in the various versions, the produced PNGs will differ very slightly. If you see this behaviour, please 'make' the samples in the samples directory, and check the produced PNGs visually. If they look ok, then PNGgraph is ok. to see some samples: cd samples make That should generate a set of pngs, which you can view using the HTML pages in the same directory (or whichever other way pleases you). The documentation available is contained in PNGgraph.pm, as pod. The latest release should normally be available from CPAN. TESTED PLATFORMS (also see NOTES FOR WIN32) Latest version: - perl 5.005_03 on Linux 2.2.5-22 (RedHat 6.0, patched), GD 1.20 Version 1.01 (GIFgraph): - perl 5.004_04 on Solaris 2.5.1, GD 1.15 - perl 5.004_02 for win32 by Gurusamy Sarathy, GD (1.14 I think) - perl 5.004_04 HP-UX 10.20, GD 1.18 (Ronald Post) AUTHOR Martien Verbruggen mgjv@comdyn.com.au tgtcmv@chem.tue.nl PNG PORT Steve Bonds sbonds@agora.rdrop.com MOST IMPORTANT CHANGES SINCE VERSION 1.04 - added bar_spacing option - added limited support for numerical X axis for equidistant X values (NOT for a real numerical graph!), thanks to Scott Prahl. - routines to automatically 'guess' nice upper and lower values for graphs have been replaced by one written by Scott Prahl MOST IMPORTANT CHANGES SINCE VERSION 1.03 - Added mixed type graph. PNGgraph::mixed options types and default_type - Added callback functionality to format y values option y_number_format - Added control over axis label placement option [xy]_label_position MOST IMPORTANT CHANGES SINCE VERSION 1.01 - Vertical printing of X axis labels - CHANGED DEFAULTS for zero_axis and zero_axis_only - Fixed problems with negative values, data ranges without 0, and printing of the x axis labels (I hope) - No more support for perl 5.003. Since perl 5.005 is out, and I don't have a 5.003 here to test all the time, I won't support it anymore. MOST IMPORTANT CHANGES SINCE VERSION 0.91 - Legends - Support for negative numbers - Ticks for X axis - line types and widths - Allow entries in data set to be undef (to skip them) - Changed 'zero' angle for pie charts (was right, now is front/bottom) - Definition of colours now possible. See PNGgraph::colour::read_rgb for details - See file CHANGES for more TODO - 3d look for graphs - logarithmic scaling - numerical X axes (halfway there) - Autoloading/splitting, etc BUG FIXES IN THIS VERSION See file BUGS NOTES FOR WIN32 I have not tested the PNG port on Win32. sbonds. PNGgraph installs and runs well under Gurusamy Sarathy's port of perl for win32, and its usage is exactly the same as documented. The ActiveState port 5.003 for win32 can be used with Dave Roth's port of GD for win32. This port, however has a peculiarity. It is impossible to manipulate the png data in memory (the GD::Image::png() method always writes to a file descriptor, instead of returning the data). This makes the use of PNGgraph with that port impossible without a lot of work. This means that until someone ports GD for the ActiveState perl with full support for all its functionality, PNGgraph will not work on ActiveState's port 5.003. It may very well, and _should_ work on the 5.005 ports, although I have personally not tested that yet. THANKS Scott Prahl brian d foy Honza Pazdziora Dave Belcher Vegard Vesterheim COPYRIGHT Copyright (c) 1995-1997 Martien Verbruggen. All rights reserved. Copyright (c) 1999 Steve Bonds. All rights reserved. This package is free software; you can redistribute it and/or modify it under the same terms as Perl itself.