has specified data input has specified data output implements has format specification data item KEGGgraph Nandini Badarinarayan KEGGGraph is an interface between KEGG pathway and graph object as well as a collection of tools to analyze, dissect and visualize these graphs. It parses the regularly updated KGML (KEGG XML) files into graph models maintaining all essential pathway attributes. The package offers functionalities including parsing, graph operation, visualization and etc. http://bioconductor.org/packages/2.4/bioc/html/KEGGgraph.html KGML R interface to boost graph library algorithm (RBGL) Graph plot R software image format