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smyrna(1) [suse man page]

GC(1)							      General Commands Manual							     GC(1)

NAME

       smyrna - interactive graph viewer

SYNOPSIS

       smyrna [ -v?  ] [ file ]

DESCRIPTION

       smyrna is a viewer for graphs in the DOT format.  It is especially designed to handle large graphs, and allows flat and topological fisheye
       views.  It is assumed the input graph has position information associated with all nodes. Using the Graphviz convention, a node's  position
       is given by its pos attribute consisting of 2 or 3 floating point numbers separated by commas.  Nodes are drawn as points and edges as line
       segments.

       If smyrna detects that the file contains xdot attributes, it will use this information when drawing nodes and edges.

       smyrna supports panning and zooming; node and edge selection; setting and retrieving node and edge attributes, especially colors; and  node
       movement.   The	Smyrna	Settings  dialogue box available under the Edit pull-down menu gives the user many choices for tailoring the graph
       view. These include whether or not nodes/edges are drawn; what labels are associated with nodes/edges; node size; transparency settings for
       nodes/edges; parameters associated with the topological fisheye view.

       For  the purposes of exploratory data analysis, smyrna provides access to the gvpr library. This allows the user to arbitrarily query, fil-
       ter or manipulate a graph. When filtering or manipulating a graph, the user has the option of performing the changes directly on the  input
       graph, or to create a new version with the changes.

OPTIONS

       The following options are supported:

       -v     Verbose mode.

       -?     Print usage information.

       By default, gc returns the number of nodes and edges.

OPERANDS

       The following operand is supported:

       file    Name  of  file  containing  a graph in DOT format.  If no file operand is specified, the user can employ the File pull-down menu to
	       select a file to be opened.

EXIT STATUS

       The following exit values are returned:

       0   Successful completion.

       1   If no No appropriate OpenGL-capable visual found, or if the default attributes template graph file or  the  default	attributes  widget
	   graph file could not be read.

FILES

       smyrna  relies on numerous support files. These are usually installed in the "share/graphviz/smyrna" directory below the installation root.
       The principal files are:

       template.dot
	      A file in DOT format specifying the default smyrna settings.  In particular, these are used to initialize the settings of the Smyrna
	      Settings dialogue box.

       mouse_actions.txt
	      A text file specifying the mapping of concrete mouse and keyboard events with smyrna actions such as panning and selecting.

       attr_widgets.dot
	      A file in DOT format specifying the bindings between GUI widgets and smyrna parameters.

ENVIRONMENT VARIABLES

       SMYRNA_PATH
	      allows a user to override the built-in path to the directory containing all of smyrna's files described above.

AUTHOR

       Arif Bilgin <arif@research.att.com>
       Emden R. Gansner <erg@research.att.com>

SEE ALSO

       gvpr(1), dotty(1), libcgraph(3)
       "Smyrna Tutorial and Reference Manual"

								  9 December 2009							     GC(1)

Check Out this Related Man Page

SCCMAP(1)                                                     General Commands Manual                                                    SCCMAP(1)

NAME

       sccmap - extract strongly connected components of directed graphs

SYNOPSIS

       sccmap [-dsv] [ -ooutfile ] [ files ]

DESCRIPTION

       sccmap  decomposes  digraphs  into strongly connected components and an auxiliary map of the relationship between components.  In this map,
       each component is collapsed into a node.  The resulting graphs are printed to standard out.  The number of nodes, edges and  strongly  con-
       nected components are printed to standard error.  sccmap is a way of partitioning large graphs into more manageable pieces.

OPTIONS

       The following options are supported:

       -d     Preserve degenerate components of only one node.

       -s     Do not print the resulting graphs. Only the statistics are important.

       -S     Just print the resulting graphs. No statistics are printed.

       -ooutput
              Prints output to the file output. If not given, sccmap uses stdout.

       -v     Generate  additional  statistics.  In  particular, sccmap prints the number of nodes, edges, connected components, and strongly con-
              nected components, followed by the fraction of nodes in a non-trivial strongly connected  components,  the  maximum  degree  of  the
              graph, and fraction of non-tree edges in the graph.

OPERANDS

       The following operand is supported:

       files   Names of files containing 1 or more graphs in dot format.  If no files operand is specified, the standard input will be used.

DIAGNOSTICS

       sccmap emits a warning if it encounters an undirected graph, and ignores it.

AUTHORS

       Stephen C. North <north@research.att.com>
       Emden R. Gansner <erg@research.att.com>

SEE ALSO

       gc(1), dot(1), acyclic(1), gvpr(1), gvcolor(1), ccomps(1), tred(1), libgraph(3)

                                                                   21 March 2001                                                         SCCMAP(1)
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