====== Pajek networks ======


**Dataset:**   ''graph''

===== Description =====

The network ''acyclic'' is a network used as the basic example of acyclic graph by Vladimir Batagelj in his courses and workshops on network analysis.

The network ''acyclic.net'' describes the network. It is a simple directed network on 11 nodes with 16 arcs.

The left picture presents a 'general' drawing of ''acyclic.net'' and the right picture its drawing 'by levels':

{{pajek:data:pajek:pics:acyclic.svg?350}}; {{pajek:data:pajek:pics:acyclic2.svg?240}}

The file ''acyclic.paj'' contains the following data:
  * ''acyclic.net'' - graph in Pajek format; 
  * ''acyclic_depth.clu'' - partition by levels; 
  * ''acyclic_order.per'' - topological sort order permutation; 
  * ''inverse_acyclic_order.per'' - inverse permutation; 
  * ''acyclic_coordinates.vec'' - double vector with (x,y)-coordinates; 


The file ''acyclic.zip'' contains the following files:
  * ''acyclic.paj'' - network data in Pajek project format; 
  * ''acyclic.ini'' - settings for drawing;
  * ''acyclic.svg'' - general picture of network;
  * ''acyclic2.svg'' - picture of network by levels.

==== Download ====

  * {{pajek:data:pajek:acyclic.paj}}
  * {{pajek:data:pajek:acyclic.zip}}

===== Background =====


Example used to explain acyclicity concepts.

===== History =====

  * January 2004: Vladimir Batagelj - Pajek input file
  * 5. August 2014: Vladimir Batagelj - documentation, included in Pajek networks
===== References =====



===== Copyright =====

CC