gvgen [ -dv? ] [ -in ] [ -cn ] [ -Cx,y ] [ -g[f]x,y ] [ -G[f]x,y ] [
-hn ] [ -kn ] [ -bx,y ] [ -Bx,y ] [ -mn ] [ -Mx,y ] [ -pn ] [ -rx,y ] [
-Rx ] [ -sn ] [ -Sn ] [ -tn ] [ -td,n ] [ -Tx,y ] [ -Tx,y,u,v ] [ -wn ]
[ -nprefix ] [ -Nname ] [ -ooutfile ]
gvgen generates a variety of simple, regularly-structured abstract
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.
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.
Generate an x by y partial grid. If f is given, the grid is
folded, with an edge attaching each pair of opposing corner ver-
tices. 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.
-B x,y Generate an x by y ball, i.e., an x by y cylinder with two "cap"
nodes closing the ends. This will have x*y + 2 vertices and
2*x*y + y edges.
-m n Generate a triangular mesh with n vertices on a side. This will
have (n+1)*n/2 vertices and 3*(n-1)*n/2 edges.
-M x,y Generate an x by y Moebius strip. This will have x*y vertices
and 2*x*y - y edges.
-p n Generate a path on n vertices. This will have n-1 edges.
-r x,y Generate a random graph. The number of vertices will be the
largest value of the form 2^n-1 less than or equal to x. Larger
values of y increase the density of the graph.
-R x Generate a random rooted tree on x vertices.
Generate an x by y torus. This will have x*y vertices and 2*x*y
edges. If u and v are given, they specify twists of that amount
in the horizontal and vertical directions, respectively.
-w n Generate a path on n vertices. This will have n-1 edges.
-i n Generate n graphs of the requested type. At present, only avail-
able if the -R flag is used.
Normally, integers are used as node names. If prefix is speci-
fied, this will be prepended to the integer to create the name.
Use name as the name of the graph. By default, the graph is
If specified, the generated graph is written into the file out-
file. Otherwise, the graph is written to standard out.
-d Make the generated graph directed.
-v Verbose output.
-? Print usage information.
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.
Emden R. Gansner <firstname.lastname@example.org>
gc(1), acyclic(1), gvpr(1), gvcolor(1), ccomps(1), sccmap(1), tred(1),
5 June 2012 GVGEN(1)
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