Free scene graph software for linux

Squid Graph is a free, simple, yet powerful Squid v2 native logfile analysis tool that generates reports with graphical representation of the proxy servers traffic.
Squid Graph is distributed under the GNU General Public Licence (GPL), which means it is FREE FOR USE AND DISTRIBUTION.
Squid Graph was developed using the Linux operating system running kernel versions ranging from 2.2.x to 2.4.x with PERL 5.6.0. It should work on all other similar operating systems with PERL 5.6 and above installed.
Some platforms which have been reported to run Squid Graph successfully are FreeBSD, OpenBSD, Sun Solaris and most Linux kernel versions and distributions.
Enhancements:
- No algorithm changes, mostly changes to contact information etc. due to hand-over of project to SecurLogic.
Installation:
Extracting the Tarball
- Extract the Squid Graph tarball file after you have downloaded it. Those with Redhat Linux (or other similar distributions) can do this: -
$ tar -zxvf squid-graph-x.x.tar.gz
- Alternatively, those with UNIX-like operating systems can do this: -
$ zcat squid-graph-x.x.tar.gz | tar -xvf -
Gathering the Pre-requisites
- As of version 3.0, Squid Graph requires the GD perl module. You can download it from http://stein.cshl.org/WWW/software/GD/ or you can use the included GD-1.3.3.tar.gz file in the extras/ directory.
- Follow the intructions in the GD perl module to get it installed correctly before you proceed.
Compiling
- Squid Graph runs out of the box. You dont have to compile it.
Putting it in the Right Place
- You might not prefer to have Squid Graph lying around in your current directory, so you should just move it to a directory which makes sense, such as /usr/local/squid-graph. e.g.
$ mv squid-graph-x.x /usr/local/squid-graph
Runing Squid Graph:
Quickstart
First, get yourself into the bin/ directory, for example: -
$ cd /usr/local/squid-graph/bin
Next, you run Squid Graph with the default options. The bare minimum for Squid Graph to run is the --output-dir option. The output directory is where the generated HTML reports and image files would be written.
$ ./squid-graph --output-dir=/var/www/html/reports < /usr/local/squid/logs/access.log
NOTE: Please check your directory permissions of your output directory!
Usually you would want the output to be generated into a directory which your web server is configured with access to. In the above example, /usr/local/squid/logs/access.log is your Squid logfile.
Where you store your Squid logfile differs from system to system. For default Redhat Linux installations, it should be in /log/squid/access.log. For those who compiled and installed Squid with the default options, it should be in /usr/local/squid/logs/access.log.
Removing the TCP or UDP Graphs
Most of you wont use cache ICP or log cache ICP, so there wont be any UDP messages in your logfiles. Disabling UDP is a good idea. You can do this by specifying the --tcp-only command line option.
$ ./squid-graph --tcp-only --output-dir=/var/www/re...
Likewise, if you only want to see UDP statistics, you can specify the --udp-only option.
$ ./squid-graph --udp-only --output-dir=/var/www/re...
Generating Cumulative Graphs
As of version 3.0, Squid Graph comes with a new feature to generage cumulative curves instead of the normal graphs. This can be done by specifying the --cumulative option.
$ ./squid-graph --cumulative --tcp-only --output-dir=/var/www/re...
To have a better understanding of what cumulative curves are, take a look at the output examples. Do note that enabling cumulative graphs disables the Average Transfer Duration graph automatically.
Disabling Average Transfer Duration Graphs
You can disable the Average Transfer Duration Graph by specifying the --no-transfer-duration option.
$ ./squid-graph --no-transfer-duration --output-dir=/var/www/re...
Specifying the Start/End Time
By default, Squid Graph generates reports based on the current time. It starts analyzing from 24 hours before the current time until the current time. Sometimes we cycle logfiles so it is necessary to specify when you want Squid Graph to start looking at your log files. This is done by specifying the --start option.
$ ./squid-graph --start=991353612 --output-dir=/var/www/re...
Likewise, you can specify the end time and Squid will automatically calculate the start time for you. This is done by specifying the --end command line option.
$ ./squid-graph --end=991352122 --output-dir=/var/www/re...
To get the last line of the Squid logfile, simply use tail -n1 logfile.log
Note that the start value is a numerical value which represents the number of seconds since 1970, NOT the conventional hh:mm:ss dd/mm/yyyy format. The reason why we did this is because Squid logs its time in this format, and we can easily use head -n1 logfile.log to view the first line of the log file to determine the start time.
Enhancements:
- Updated links after moving project to Sourceforge
- Updated links to incorrect GPL license in documentation
- Updated links to outdated GD Perl module
- Simplified package directory structure and removed old files
- No algorithm / logic changes

Devel::Graph module can turn Perl code into a graphical flowchart.

SYNOPSIS

use Devel::Graph;
my $grapher = Devel::Graph->new();

my $graph = $grapher->decompose( if ($b == 1) { $a = 9; } );
print $graph->as_ascii();

# Will result in something like this:

################
# start #
################
|
|
v
+--------------+
| if ($b == 1) |--+
+--------------+ |
| |
| true |
v |
+--------------+ |
| $a = 9; | | false
+--------------+ |
| |
| |
v |
################ |
# end # decompose( lib/Foo.pm );
print $graph_2->as_ascii();

This module decomposes Perl code into blocks and generates a Graph::Flowchart object out of these. The resulting object represents the code in a flowchart manner and it can return an Graph::Easy object.

This in turn can be converted it into all output formats currently supported by Graph::Easy, namely HTML, SVG, ASCII art, Unicode art, graphviz code (which then can be rendered as PNG etc) etc.

CvsGraph is a utility to make a graphical representation of all revisions and branches of a file in a CVS/RCS repository.
CvsGraph project has been inspired by the graph option in WinCVS, but I could not find a stand-alone version of this graph code. So, it was time to write one.
Enhancements:
- Merge lines between branches with the same parent were drawn cross-over.
- These were made easier to see by forcing them to originate on one side of the revision boxes.

GENE Graph Export Engine is an advanced XML exporter.
GENE Graph Export Engine is a complex convertor/framework for multi-namespace XML transforming and exporting.
It is able to convert various XML types including SVG, DocBook, MathML, XSL-FO, and their combinations into a wide area of output formats: PDF, PNG, SVG, PS, MIF, RTF, and XHTML.
Custom XSLT scripts can be registered easily and are used automatically. It requires Sun JRE 5.0.
Enhancements:
- GENE Core bugfixes. FOP plugin bugfixes.
- Gene Runner I18N support has been added. l12n in Slovak.
- Configuration ability has been added.
- New command line switches have been added.
- Preliminary buggy CML (Chemical Markup Language) and XHTML->DocBook exporters have been added.

Genealogy Graph Generator (GGG) is a set of programs for automatically generating academic genealogy graphs. It tells you who your advisor and your advisors advisor and her advisor and so on are.

Text::Graph is a Perl extension for generating text-based graphs.

SYNOPSIS

use Text::Graph;
blah blah blah

Some data is easier to analyze graphically than in its raw form. In many cases, however, a full-blown multicolor graphic representation is overkill. In these cases, a simple graph can provide an appropriate graphical representation.

The Text::Graph module provides a simple text-based graph of a dataset. Although this approach is not appropriate for all data analysis, it can be useful in some cases.

SVG::Template::Graph is a Perl extension for generating template-driven graphs with SVG.

SYNOPSIS

use SVG::Template::Graph;
$data = [
{
barGraph=>1,#
barSpace=>20,
title=> 1: Trace 1,
data => #hash ref containing x-val and y-val array refs
{
x_val =>
[50,100,150,200,250,
300,350,400,450,500,550],
y_val =>
[100,150,100,126,100,
175,100,150,120,125,100],

},
format =>
{ #note that these values could change for *each* trace
lineGraph => 1,
x_min => 0,
x_max => 600,
y_min => 50,
y_max => 200,
x_axis => 1, #draw x-axis
y_axis => 1, #draw y-axis

#define the labels that provide the data context.
labels =>
{
#for year labels, we have to center the axis markers
x_ticks =>
{
label =>[2002,2003,2004],
position=>[100,300,500],
},
y_ticks =>
{
#tick mark labels
label => [ -250, 0, 250, 500],
#tick mark location in the data space
position => [50, 100, 150, 200],
},
},
},
},
];


#construct a new SVG::Template::Graph object with a file handle
my $tt = SVG::Template::Graph->new($file);

#set up the titles for the graph
$tt->setGraphTitle([Hello svg graphing world,I am a subtitle]);

#generate the traces.
$tt->drawTraces($data,$anchor_rectangle_id);
#serialize and print
print $tt->burn();

Template::Graph:SVG is a module for the generation of template-driven graphs using Scalable Vector Graphics (SVG). Using this module, it is possible to define a template SVG document with containers which are populated with correctly scaled plot images.