Exploratory Social Network Analysis with Pajek
Wouter de Nooy, Andrej Mrvar, Vladimir Batagelj
W. de Nooy, A. Mrvar, V. Batagelj: Exploratory Social Network
Analysis with Pajek, CUP,
This is the first textbook on social network analysis
applications, and professional software for performing network analysis
Step by step, the book introduces the main structural concepts and
applications in social research with exercises to test the
In each chapter, each theoretical section is followed by an application
section explaining how to perform the network analyses with Pajek
Pajek software and data sets for all examples are freely available from
this web site, so the reader can learn network analysis by doing it.
In addition, each chapter offers case studies for practicing network
In the end, the reader has the knowledge, skills, and tools to apply
network analysis in all social sciences, ranging from anthropology and
to business administration and history.
Pajek - the software accompanying the book
The Application sections in the book show how to perform social network
analysis with program Pajek. It uses a particular version of the
software, namely PajekBE (book edition), which is identical
to Pajek 1.01
and its installation file
according to the book. Use
to download the software and consult Appendix I of the
book for installation information.
Once you have become accustomed to Pajek, you may want to upgrade to
the newest version of the software, which is available from the
Pajek download page.
The data sets used in the book
Each chapter uses one or more examples of social networks. The data
sets of the examples can be downloaded from the book's
which also contains descriptions of the data sets, or you can
download a zipped file containing
all data files.
After you download
the zipped data files, extract the data files
to your personal network analysis folder (the default folder will be
\ESNA with Pajek). For each chapter, a new subfolder will be created
containing the data files belonging to that chapter.
You can download here also an
empty Access database.
In Pajek, network drawings use color to identify types of vertices and
lines. Since the book is printed in black and white, the colors that
you get on your computer screen are not reproduced in the book. For
those who like to know the colors of network drawings in Pajek, we
composed a document (PDF) containing all relevant figures of the book in color.
Handling (Encapsulated) PostScript (.ps, .eps)
output from Pajek
For printing network drawings created in Pajek, (Encapsulated)
PostScript is the preferred format because it yields figures of
professional quality. For instance, all line drawings in the book are
Encapsulated PostScript output from Pajek. However, standard Windows
software and printers do not widely support (Encapsulated)
Some useful tools for working with (Encapsulated) PostScript:
- GhostScript and GhostView software is a free viewer for
(Encapsulated) PostScript, which can be downloaded from Alladin. From GhostView,
you can print the drawing on any printer and export it in several
is a free plug-in for GhostView that enables you to export to Windows
MetaFile format, which can be included in most Windows software.
Distiller, which is part of the Adobe Acrobat software
package (not free), translates Encapsulated PostScript to Portable
Document Format (PDF), which can be viewed with the free Adobe
Handling Scalable Vector Graphics (.svg) output from Pajek
Scalable Vector Graphics are ideal for presenting network drawings in a
web browser, but you may need additional software:
- The SVG
drawing is inserted in (actually, referenced by) a HTML page, which is
read by a web browser.
Recent browsers such as Microsoft Internet Explorer version 6.0 and
higher can display SVG images directly. For older browsers, you need to
install a plug in, which can be downloaded from Adobe/SVG.
- Onscreen editing of SVG images can be done with several
software packages, among them Webdraw and Adobe
Handling 3-dimensional Virtually Reality Modeling Language
(VRML) models (.wrl) exported with Pajek
Pajek can export neworks in 3D format .
- With the Export>VRML command, Pajek exports the network
to VRML 1.0. For displaying a VRML world in a web browser, you need a
plug in, e.g., Cosmo player
Cortona VRML Client.
- Some plug ins can only read newer VRML models (VRML 2.0 or
97). If so, you need a converter such as the MS-DOS program VRML1TOVRML2.EXE,
which is part of the Cosmo Player package. The stand-alone program VRML1TOVRML2.EXE
must be run from the MS-DOS prompt with the command:
VRML1TOVRML2 [name of vrml 1.0 file] [name of vrml 2.0 file]
Maybe the original vertex names, which are anchor
names in the VRML model, may cause problems; if this happens, open the
the VRML file in a plain text editor and adjust or remove the anchor
names. Do not forget to save the changed file to plain text.
- If you want to edit a VRML model onscreen, you need
special VRML design and
- POVRay is a good and
free software package for ray tracing a 3D model. We used it to produce
the book's cover image.
- Since POVRay does not understand the Virtual Reality
Modeling language directly, you must first transform the VRML 2.0 model
to POVRay language, which can be done with the MS-DOS program vrml2pov.exe.
In the MS-DOS prompt, issue the command:
vrml2pov [name of vrml 2.0 file] [name of povray file]
For the POVRay file, use the extension .pov. You can
open the newly created file in POVRay and render it.
Handling molecule model output (.mol, .kin) from Pajek
- MDL MOL models are three-dimensional and they are viewed in a
web browser and a special plug-in
- Kinemages can be viewed with the software program
20. November 2015 /12. January 2005 / 2. October 2004 Books;