GVGEN - Online Linux Manual PageSection : 1
Updated : 5 June 2012
NAMEgvgen − generate graphs
SYNOPSISgvgen [ −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 ] [ -Sn,d ] [ -tn ] [ -td,n ] [ -Tx,y ] [ -Tx,y,u,v ] [ -wn ] [ -nprefix ] [ -Nname ] [ -ooutfile ]
DESCRIPTIONgvgen generates a variety of simple, regularly-structured abstract graphs.
OPTIONSThe 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. −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. −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. −S n,d Generate a d-dimensional Sierpinski graph of order n. At present, d must be 2 or 3. For d equal to 3, there will be 4*(4^(n-1) + 1)/2 vertices and 6 * 4^(n-1) edges. −t n Generate a binary tree of height n. This will have 2^n-1 vertices and 2^n-2 edges. −t h,n Generate a n-ary tree of height h. −T x,y −T x,y,u,v 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 available if the -R flag is used. −n prefix Normally, integers are used as node names. If prefix is specified, this will be prepended to the integer to create the name. −N name Use name as the name of the graph. By default, the graph is anonymous. −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. −v Verbose output. −? Print usage information.
EXIT STATUSgvgen 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.
AUTHOREmden R. Gansner <erg@research.att.com>
SEE ALSOgc(1), acyclic(1), gvpr(1), gvcolor(1), ccomps(1), sccmap(1), tred(1), libgraph(3) 0
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