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  • License: Freeware
  • Last update: 7 years ago
  • Total downloads: 194
  • Price: Free |
  • Operating system: Mac OS X
  • Publisher: Gabor Csardi and Tamas Nepusz
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mac default iconigraph library for Mac Publisher's description

Library for creating and manipulating graphs

igraph is a free software package for creating and manipulating undirected and directed graphs.

igraph includes implementations for classic graph theory problems like minimum spanning trees and network flow, and also implements algorithms for some recent network analysis methods, like community structure search.

igraph can handle graphs with millions of vertices and edges thanks to its efficient implementation. The rule of thumb is that if your graph fits into the physical memory then igraph can handle it.

Here are some key features of "igraph library":

В· igraph contains functions for generating regular and random graphs according to many algorithms and models from the network theory literature.
В· igraph provides routines for manipulating graphs, adding and removing edges and vertices.
В· You can assign numeric or textual attribute to the vertices or edges of the graph, like edge weights or textual vertex ids.
В· A rich set of functions calculating various structural properties, eg. betweenness, PageRank, k-cores, network motifs, etc. are also included.
В· Force based layout generators for small and large graphs
В· The R package and the Python module can visualize graphs many ways, in 2D and 3D, interactively or non-interactively.
В· igraph provides data types for implementing your own algorithm in C, R, Python or Ruby.
В· Community structure detection algorithms using many recently developed heuristics.
В· igraph can read and write many file formats, e.g., GraphML, GML or Pajek.
В· igraph contains efficient functions for deciding graph isomorphism and subgraph isomorphism
В· It also contains an implementation of the push/relabel algorithm for calculating maximum network flow, and this way minimum cuts, vertex and edge connectivity.
В· igraph is well documented both for users and developers.
В· igraph is open source and distributed under GNU GPL.

What's New in This Release:

В· Bugs corrected in the R interface
В· Some small changes to make 'R CMD check' clean
В· Fixed a bug in graph.incidence, the 'directed' and 'mode' arguments were not handled correctly
В· Betweenness and edge betweenness functions work for graphs with many shortest paths now (up to the limit of long long int)
В· When compiling the package, the configure script fails if there is no C compiler available
В· igraph.from.graphNEL creates the right number of loop edges now
В· Fixed a bug in bipartite.projection() that caused occasional crashes on some systems

В· New in the Python interface
В· Added support for weighted diameter
В· get_eid() considers edge directions by default from now on
В· Fixed a memory leak in the attribute handler
В· 'NaN' and 'inf' are treated correctly now

В· Bugs corrected in the C layer
В· Betweenness and edge betweenness functions work for graphs with many shortest paths now (up to the limit of long long int)
В· The configure script fails if there is no C compiler available
В· Fixed a bug in igraph_community_spinglass, when csize was a NULL pointer, but membership was not
В· Fixed a bug in igraph_bipartite_projection that caused occasional crashes on some systems

System Requirements:

В· libxml2 library
В· R project
В· Python
Program Release Status:
Program Install Support: Install anh Uninstall

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