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gvgen

GC(1)							      General Commands Manual							     GC(1)

NAME

       gvgen - generate graphs

SYNOPSIS

       gvgen  [  -d?   ] [ -cn ] [ -Cx,y ] [ -g[f]x,y ] [ -G[f]x,y ] [ -hn ] [ -kn ] [ -bx,y ] [ -pn ] [ -sn ] [ -Sn ] [ -tn ] [ -Tx,y ] [ -wn ] [
       -ooutfile ]

DESCRIPTION

       gvgen generates a variety of simple, regularly-structured abstract graphs.

OPTIONS

       The following options are supported:

       -c n   Generate a cycle with n vertices and edges.

       -C x,y Generate an x by y cylinder.  This will have x*y vertices and 2*x*y - y edges.

       -g [f]x,y
	      Generate an x by y grid.	If f is given, the grid is folded, with an edge attaching each pair of	opposing  corner  vertices.   This
	      will have x*y vertices and 2*x*y - y - x edges if unfolded and 2*x*y - y - x + 2 edges if folded.

       -G [f]x,y
	      Generate	an  x by y partial grid.  If f is given, the grid is folded, with an edge attaching each pair of opposing corner vertices.
	      This will have x*y vertices.

       -h n   Generate a hypercube of degree n.  This will have 2^n vertices and n*2^(n-1) edges.

       -k n   Generate a complete graph on n vertices with n*(n-1)/2 edges.

       -b x,y Generate a complete x by y bipartite graph.  This will have x+y vertices and x*y edges.

       -p n   Generate a path on n vertices.  This will have n-1 edges.

       -s n   Generate a star on n vertices.  This will have n-1 edges.

       -S n   Generate a Sierpinski graph of order n.  This will have 3*(3^(n-1) - 1)/2 vertices and 3^n edges.

       -t n   Generate a binary tree of height n.  This will have 2^n-1 vertices and 2^n-2 edges.

       -T x,y Generate an x by y torus.  This will have x*y vertices and 2*x*y edges.

       -w n   Generate a path on n vertices.  This will have n-1 edges.

       -o outfile
	      If specified, the generated graph is written into the file outfile.  Otherwise, the graph is written to standard out.

       -d     Make the generated graph directed.

       -?     Print usage information.

EXIT STATUS

       gvgen exits with 0 on successful completion, and exits with 1 if given an ill-formed or incorrect flag, or if  the  specified  output  file
       could not be opened.

AUTHOR

       Emden R. Gansner <erg@research.att.com>

SEE ALSO

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

								   27 March 2008							     GC(1)