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ccomps (1)
  • >> ccomps (1) ( Linux man: Команды и прикладные программы пользовательского уровня )
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    NAME

    ccomps - connected components filter for graphs
     
    

    SYNOPSIS

    ccomps [ -sxv? ] [ -ooutfile ] [ files ]  

    DESCRIPTION

    ccomps decomposes graphs into their connected components, printing the components to standard output.  

    OPTIONS

    The following options are supported:
    -s
    No output graph is printed. Implies the -v flag.
    -x
    Only the connected components are printed, as separate graphs.
    -v
    Counts of nodes, edges and connected components are printed.
    -C
    Use clusters in computing components in addition to normal edge connectivity. In essence, this gives the connected components of the derived graph in which nodes top-level clusters and nodes in the original graph. This maintains all subgraph structure within a component, even if a subgraph does not contain any nodes.
    -n
    Do not project subgraph structure. Normally, if ccomps produces components as graphs distinct from the input graph, it will define subgraphs which are projections of subgraphs of the input graph onto the component. (If the projection is empty, no subgraph is produced.) If this flag is set, the component contains only the relevant nodes and edges.
    -X node_name
    Prints only the component containing the node node_name, if any.
    -X# index
    Prints only component number index, if any, starting at 0.
    -o outfile
    If specified, each graph will be written to a different file with the names derived from outfile. In particular, if both -o and -x flags are used, then each connected component is written to a different file. If outfile does not have a suffix, the first file will have the name outfile; then next outfile_1, then next outfile_2, and so on. If outfile has a suffix, i.e., has the form base.sfx, then the files will be named base.sfx, base_1.sfx, base_2.sfx, etc.

    By default, each input graph is printed, with each connected component given as a subgraph whose name is a concatenation of the name of the input graph, the string "_component_" and the number of the component.  

    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.
     

    RETURN CODES

    Unless used to extract a single connected component, ccomps returns 0 if all the input graphs are connected; and non-zero if any graph has multiple components, or any error occurred. If just extracting a single component, ccomps returns 0 on success and non-zero if an error occurred.  

    BUGS

    It is possible, though unlikely, that the names used for connected components and their subgraphs may conflict with existing subgraph names.  

    AUTHORS

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

    SEE ALSO

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


     

    Index

    NAME
    SYNOPSIS
    DESCRIPTION
    OPTIONS
    OPERANDS
    RETURN CODES
    BUGS
    AUTHORS
    SEE ALSO


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