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Chart version 2.4.10
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INSTALLING
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The usual.

       perl Makefile.PL
       make
       make test
       make install

This should install to your site_perl directory.  The test scripts also
put samples of the different charts in the samples/ directory.


-------------
PREREQUISITES
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Lincoln Stein's GD module version 2.0.36 or higher.

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CHANGES
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2.4.10 Upload to pause.perl.org failed for version 2.4.9. Therefore, the version 2.4.9 was renamed to 2.4.10
      for a new upload.

2.4.9 Upload to pause.perl.org failed for version 2.4.8. Therefore, the version 2.4.8 was renamed to 2.4.9
     for a new upload.

2.4.8 Bug repaired: rt.cpan.org #81171::Composite w/two ::Lines and xy_plot ==> undefined value when drawing ticks
     (t/composite_7.t and t/composite_8.t are showing the differences)
     Base.pm: defined(@array)
     Chart.pod corrected for deprecated @ARR->[$i]

2.4.7 Not published

2.4.6 Number of named colors extended
     Documentation.pdf explains the use of colors (Appendix added)
     Corrections in base.pm, routines
      _draw_bottom_legends, _draw_x_number_ticks
      in LinesPoints.pm, routines  _draw_data

2.4.5 Typo in _draw_x_ticks corrected
     Methods scalar_png(), scalar_jpeg() corrected for result.
     Test routine t/scalarImage.t added
     Chart.pod corrected

2.4.4 The brush styles to points and linespoints are extended.
     Not only circles represent the points but a number of different
     brush styles, linke donut, Star and so on.

2.4.3 Corrections to imagemap production in Composite.pm and Lines.pm

2.4.2 Changes done by R. Dassing, Michael Potter
     Base.pm:
     The values for 'true' resp. 'false' may be of the following
     true: TRUE, true, T, t, 1 and defined
     false: FALSE, false, F, f, 0 or undefined

     Base.pm:
     Added new options xlabel and xrange which is valid for xy_plot
     and Chart::Lines, Chart::Points, Chart::LinesPoints,
     Chart::Split, Chart::ErrorBars.

     In order to use the labels, the chart module needs to have 'xlabels'
     AND 'xrange' set. Below is some example code for use:
     @labels = (['Jan', 'Feb','Mar'],
                ['10','40','70']);
     $chart->set( xlabels => \@labels,
                  xrange => [0,100] );
     This options allow to set and position labels at the x-axis arbitrary.

     add_dataset() and app_pt() accepts now datasets as lists and as
         references to list like already mentioned in the docs


     Pie.pm:
     Optimized organisation of the placement of the labels.
     Added flag to avoid plotting of legends at all
     Using GD Version 2.0.36 as this version supports 'filledArc'

     Composite.pm:
     Correction due to Request 23166
     write the endmost value of input array
     in imagemap_data array

     Lines.pm:
     Correction due to Request 23166:
     write the endmost value of input array
     in imagemap_data array



2.4.1 Changes done by Christine Zilker, Gerhard Stuhlpfarrer, R. Dassing
       Added new Options:
            ring             Draw a ring instead of a Pie
            legend_lines     Connect Pie and the description with a line
            stepline         Connect Lines and LinesPoints by a stepped line
            stepline_mode    (thanks to Gerhard Stuhlpfarrer)
            brush_size1      Define Brush Size for Composite 1
            brush_size2      and 2
       Color problem in Pie fixed
       Positioning of the description optimized in Pie
       Division by zero problem fixed in Pie
       Module 'Bars' checks for numeric data a input on y-axis
       New Function added to Base:
           minimum  - determine minimal value of an array of numeric values
           maximum  - determine maximal value of an array of numeric values
           arccos   - arccos
           arcsin   - arcsin
       Some small bugs corrected:
           Base::_find_y_scale
           Base::_find_y_range   : check for numeric values
           Base::_find_x_range   : check for numeric values
       Latex sources for documentation included
           (We hope to get a better documentation be a native english speaking person)

2.3  Changes done by Christine Zilker:
       Added new Options:
            in Composite:
               legend_example_height    changes thickness of the lines in the legend,
               f_y_tick1, f_y_tick2 analog to f_y_tick
                                        used for right and left y-axes
            in Direction:
               pairs

       Added the possibility to add more datasets in Chart::Direction

       Fixed "label space" problem in Pie
       Fixed dataset order (in the legend) in StackedBars
       Fixed problem of getting the right values if round2Tick is used
       Fixed problem of datavalues in _find_y_scale
       Some minor bugfixes

       Update of the Documentation (Documentation.pdf)

       The requested support of TruType fonts was currently dropped due to
       missing support in GD.pm (even in new versions)

       The print out of some hints and warnings where deleted not to confuse
       the user.

2.2: Composite.pm: imagemap_dump() repaired.

2.1: Changes done by Markus Brandl:
       new Modules added: ErrorBars.pm, HorizontalBars.pm, Pareto.pm,

       Pie.pm, Split.pm and Direction.pm

       Subdirectory "doc" contains a Acrobat Reader Documentation.pdf file.

       Function add_datafile() added. It is now possible to add a complete
       datafile.

       Added new Options: precision, xy_plot, min_x_ticks, max_x_ticks,
       skip_y_ticks, skip_int_ticks, legend_label_value, y_axes,
       scale, interval, start, interval_ticks, sort, same_error, point,
       line, arrow, angle_interval, min_circles, max_circles
       Also added: the 'title' and 'x_label' options in the colors option

       Documentation (Documentation.pdf) added.

       _find_x_scale, _find_x_range and _draw_x_number_ticks added to make
       xy_plots possible.

       _sort_data has now a body.

       Fixed integer ticks problem by adding the skip_int_ticks option
       Fixed f_x_ticks and f_y_ticks problem in Composite
       Fixed negative value problem in Bars
       Fixed min_val and max_val problem in draw_data function of all modules:
       Now, Chart plots the data only if the data is in the area of min_val and
       max_val! The border of bars in Bars, HorizontalBars and StackedBars will
       be plotted pink (not misccolor) if the data isn't in the min_val-max_val
       interval.
       Fixed custom_x_ticks problem in _draw_x_ticks
       Some other bugfixes.
       Updates in _find_y_scale, _round2tick, _calcTickInterval


1.1: Changes done by David Pottage:
       Plot scales can now have any magnitude.
       It does not matter if the data covers a range of 100000000000 units
       or 0.00000000001 units, the scale will be correctly calculated.

       Ticks on plot scales are now plotted on 'round' numbers.
       The number & spacing of ticks is chosen based on the data range.

       False zero graphs are now explicitly supported, and will be
       generated if the data range merits it.
       The instance field 'include_zero' should be set to zero to suppress this.

       Added: include_zero, min_y_ticks, max_y_ticks, integer_ticks_only

1.0.1:
       Fixed _draw_bottom_legend in Base.pm

0.99c-pre3 - 1.0:
       Fixed _draw_data in Lines.pm: lines are limited to the frame
       Added f_x_tick, f_y_tick
       Added jpeg(), cgi_jpeg() to produce the format jpeg
       Delete GIF support, added PNG and JPEG instead

0.99b - 0.99c-pre3:
       James F Miner <[email protected]>:
       Added Mountain chart type
       Added Patterns.  See t/mountain.t for details
       Bugfix for drifting x tick
       Improved internal color handling

       Richard Dice  <[email protected]>:
       Added brush shapes for Points, LinesPoints
       Added scalar_gif

0.99a - 0.99b:
       Fixed left legend in composite charts
       Fixed no color problem when using composite charts w/ no legend
       Fixed color handling for datasets
       Added option for http header Pragma: no-cache
               Netscape 4.5 has a bug that breaks it, but it works with
               other browsers.  Any ideas for a workaround?

0.99 - 0.99a:
       Added use of undef() values to represent 'no data' for line breaks
       Added ylabel*_color options
       Added x_grid_lines, y_grid_lines & y2_grid_lines , and color options for each
       Cache disabling in cgi header: Reiner Nippes <[email protected]>
       Restored grid_lines option: Heinz-Guenter Kontny <[email protected]>
       Fixed a typo that broke imagemap data storage in Lines charts

0.94 - 0.99:
       Modified the 'title' option to correctly process newlines
       Deprecated the 'subtitle' option, will remove it in next release
       Changed the API for specifying colors
       Added support for printing to file handles
       Added Chart::Composite
       Added 'spaced_bars' to make it easy to differentiate the bars
       Added 'grey_background' to make plot background grey
       Added support for negative values in the datasets
       Added methods to remember and dump imagemap pixel information
       Included rgb.txt with distribution for WinXX users

0.93 - 0.94:
       Moved the legend down to be flush with the chart
       Fixed the long decimal y-tick label problem
       Fixed (for the last time, hopefully) the pre-5.004 compilation problem
       Fixed handling of undefined data points
       Added more colors for the default data colors
       Added the transparent gif option
       Added the option for user-specified colors
       Added the grid_lines option

0.92 - 0.93:
       Fixed the sort problem
       Fixed the y-axis label centering problem
       Fixed pre-5.004 compilation problem
       Added StackedBars charts

------
MAINTAINER
------

Chart-Group ([email protected])

---------
COPYRIGHT
---------

Copyright(c) 1997-1998 David Bonner, 1999 Peter Clark,
2001-2012 Chart-Group at BKG.
All rights reserved.
This program is free software; you can redistribute it and/or modify it under
the same terms as Perl itself.

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