Free creating graphs an software for linux

Chart::PNGgraph is a graph plotting module (deprecated).

SYNOPSIS

use Chart::PNGgraph::moduleName;

Chart::PNGgraph is a perl5 module to create PNG output for a graph.
Chart::PNGgraph is nothing more than a wrapper around GD::Graph, and its use is deprecated. It only exists for backward compatibility. The documentation for all the functionality can be found in GD::Graph.

This module should work with all versions of GD, but it has only been tested with version 1.19 and above. Version 1.19 is the last version that produces GIF output, and requires a conversion step. The default distribution of Chart::PNGgraph uses Image::Magick for this. If youd like to use something else, please replace the sub png2gif in Chart::PNGgraph::Convert with something more to your liking.

NOTES

Note that if you use Chart::PNGgraph with a GD version 1.19 or lower that any included logos will have to be in the GIF format. The only time that PNG comes into play is _after_ GD has done its work, and the GIF gets converted to PNG. There are no plans to change that behaviour; its too much work, and you should really be upgrading to a version of GD that produces PNG directly.

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

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.

Chart::EPS_graph creates line graphs in PostScript as *.eps format.

SYNOPSIS

# Create anew a 600 x 600 points (not pixels!) EPS file
my $eps = Chart::EPS_graph->new(600, 600);

# Choose minimum required display info
$eps->set(
label_top => Graph Main Title,
label_y1 => Y1 Axis Measure (Units),
label_y2 => Y2 Axis Measure (Units),
label_x => X Axis Measure (Units),
);

# Choose 6 of 13 named chans, 4 at left, 2 at right
$eps->set(
names => @all_13_name_strings,
data => @all_13_data_arefs,
y1 => [7, 8, 10, 11],
y2 => [9, 12],
);


# Choose optional graph features
$eps->set(
label_y1_2 => Extra Y1 Axis Info,
label_y2_2 => Extra Y2 Axis Info,
label_x_2 => Extra X Axis Info,

# Any common browser color no matter how hideous.
bg_color => DarkOliveGreen,
fg_color => HotPink,
web_colors => [Crimson, Lime, Indigo, Gold, Snow, Aqua],

# Any known I font no matter how illegible
font_name => ZapfChancery-MediumItalic,
font_size => 18,

# See POD about this one. But in brief:
# If set to "1" channel innumeration gaps will be closed.
# If set to "0" (the default) they will be left as they are.
close_gap => 0,

# If the 0th channel is not for the X axis (the default) then the
# data point count is used as the X axis, which you may scale.
# So if X were Time in seconds, with no 0th channel having acutally
# recorded it, but each data point were known to be 0.5 seconds...
$self->{x_is_zeroth} = 0; # Boolean, so 1 or 0.
$self->{x_scale} = 2; # Have 10th datapoint show as 20, etc.
);

# Write output as EPS
$eps->write_eps( cwd() . /whatever.eps ); # Write to a file.

# View, convert or edit the EPS output
$eps->display(); # Display in viewer (autodetects gv or gsview.exe).
$eps->display(GS); # Convert to PNG via Ghostscript.
$eps->display(GIMP); # Open for editng in The GIMP.

The code is appropriately documented and API reference is generated automatically by epydoc. Comments, bug reports and suggestions are welcome.

Major Features:

1. Support for directed, undirected, weighted and non-weighted graphs
2. Support for hypergraphs
3. Canonical operations
4. XML import and export
5. DOT-Language output (for usage with Graphviz)
6. Random graph generation
7. Accessibility (transitive closure)
8. Breadth-first search
9. Cut-vertex and cut-edge identification
10. Depth-first search
11. Heuristic search (A* algorithm)
12. Identification of connected components
13. Minimum spanning tree (Prims algorithm)
14. Mutual-accessibility (strongly connected components)
15. Shortest path search (Dijkstras algorithm)
16. Topological sorting

Enhancements: Fixes an installer bug.

Requirements: Python

Chart::Graph::Xrt3d is a Perl module for creating 3D graph charts.

SYNOPSIS

#Include module
use Chart::Graph::Xrt3d qw(xrt3d);

# Function call
xrt3d(%options,
@data_set
);

This module is unmaintained, it worked with Sitrakas XRT, and hasnt been tested against newer versions.

Sitraka (now Quest) makes a number of graphics packages for UNIX systems. XRT is a Motif-based commercial software product that has been adapted by CAIDA using a combination of C drivers and Perl function xrt3d(). The Perl function xrt3d() provides access to the three dimensional graphing capabilities of XRT from Perl. To access the two dimensional graphing using XRT, use xrt2d() also supplied in the Chart::Graph package.

PHP HTML Graph Class is a class for drawing vertical bar graphs using only HTML and CSS. Simple and grouped bars can be created. You can change everything regarding the looks as the output is template-driven.
On the fly, you can change the size of graph, the color of all or individual bars, add labels, a title, and footnotes, or customize the CSS style of all elements. The width and height of bars can be specified in pixels or percentages. The code is heavily documented.
Enhancements:
- In some PHP versions, there were some issues regarding passing variables by reference.
- The class would produce no output (nor errors) in PHP versions lower than 5 due to the different implementations of PHPs get_class() function in these versions.

SVG::Graph is a Perl module to visualize your data in Scalable Vector Graphics (SVG) format.

SYNOPSIS

use SVG::Graph;
use SVG::Graph::Data;
use SVG::Graph::Data::Datum;

#create a new SVG document to plot in...
my $graph = SVG::Graph->new(width=>600,height=>600,margin=>30);

#and create a frame to hold the data/glyphs
my $frame = $graph->add_frame;

#lets plot y = x^2
my @data = map {SVG::Graph::Data::Datum->new(x=>$_,y=>$_^2)}
(1,2,3,4,5);
my $data = SVG::Graph::Data->new(data => @data);

#put the xy data into the frame
$frame->add_data($data);

#add some glyphs to apply to the data in the frame
$frame->add_glyph(axis, #add an axis glyph
x_absolute_ticks => 1, #with ticks every one
#unit on the x axis
y_absolute_ticks => 1, #and ticks every one
#unit on the y axis

stroke => black, #draw the axis black
stroke-width => 2, #and 2px thick
);

$frame->add_glyph(scatter, #add a scatterplot glyph
stroke => red, #the dots will be outlined
#in red,
fill => red, #filled red,
fill-opacity => 0.5, #and 50% opaque
);

#print the graphic
print $graph->draw;

SVG::Graph is a suite of perl modules for plotting data. SVG::Graph currently supports plots of one-, two- and three-dimensional data, as well as N-ary rooted trees. Data may be represented as:

Glyph Name Dimensionality supported
1d 2d 3d tree
--------------------------------------------------------
Axis x
Bar Graph x
Bubble Plot x
Heatmap Graph x
Line Graph x
Pie Graph x
Scatter Plot x
Spline Graph x
Tree x

SVG::Graph 0.01 is a pre-alpha release. Keep in mind that many of the glyphs are not very robust.