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… after the example in the tikz gallery. \usetikzlibrary{calc,3d}\newcommand{\setxyz}[1]{% \pgfmathsetmacro{\xone}{cos(180+#1)}% \pgfmathsetmacro{\yone}{sin(180+#1)}% \pgfmathsetmacro{\xtwo}{cos(360-#1)}% \pgfmathsetmacro{\ytwo}{sin(360-#1)}%}\setxyz{17}\begin{tikzpicture}% [x = {(\xone cm,\yone cm)}, y = {(\xtwo cm,\ytwo cm)}, z = {(0cm,1cm)}] \GraphInit[vstyle=Shade] \SetVertexNoLabel \begin{scope}[canvas is xy plane at z=-5] \Vertex{x} \end{scope} \begin{scope}[canvas is xy plane… Continue Reading →

This is the circulant C_9(1,2,3,4)\begin{tikzpicture}\usepgflibrary{arrows}\GraphInit[vstyle=Art]\SetUpEdge[style={->,>=angle 45,bend right=10},color=red]\grCirculant[RA=3]{9}{1,-2,3,-4}\end{tikzpicture} See also: Original Source by Rafael

UPDATE: This example no longer works with the latest versions of tkz-graph and tkz-berge. For an updated version see this post at my new blog. \begin{tikzpicture}\SetVertexNormal[LineColor=brown]\Vertex[x=0,y=2.5,style=orange,LabelOut=true,Lpos=90]{A}{\tikzstyle{every node} = [node distance=1.5cm] \Vertices[x=1.5,y=4,dir=\SO,LabelOut=true,Ldist=5pt]{B,C,D}}\Vertices[x=3,y=5,dir=\SO,style={shape=coordinate}]{E,F,G,H,I,J}\Vertices[x=4.5,y=5,dir=\SO,style={font=\bfseries}]{K,L,M,N,O,P}{\tikzstyle{every node} = [node distance=1.5cm] \Vertices[x=6,y=4,dir=\SO, style={line width=2pt, inner sep=0pt,… Continue Reading →

\begin{tikzpicture} \SetVertexNormal \Vertex[x=0,y=2.5]{A} {\tikzstyle{every node} = [node distance=1.5cm] \Vertices[x=1.5,y=4,dir=\SO]{B,C,D}} \Vertices[x=3,y=5,dir=\SO]{E,F,G,H,I,J} \Vertices[x=4.5,y=5,dir=\SO]{K,L,M,N,O,P} {\tikzstyle{every node} = [node distance=1.5cm] \Vertices[x=6,y=4,dir=\SO]{Q,R,S}} \Vertex[x=7.5,y=2.5]{T} \Edges[color=red](A,B,E,K,Q,T,S,P,J,D,A) \foreach \x/\y in {E/F,G/H,I/J,K/L,M/N,O/P} {\Edge[color=green](\x)(\y)} \Edge[style=->](I)(P) \Edge[style=dashed](A)(C) \Edge[style=dotted](C)(F) \Edge[label=CD](C)(D) \Edge[label=BC,labelcolor=yellow](B)(C) \Edge[label=QR,labelcolor=orange,labeltext=cyan](Q)(R) \Edge[label=RS,labelstyle=right](R)(S) \Edge[label=OS,labelstyle={below=1pt,inner sep=0pt}](O)(S) \Edge[label=LQ,labelstyle={above,font=\bfseries}](L)(Q) \Edge[label=FL,labelstyle={font=\tiny\bfseries}](F)(L) \Edge[label=GN,labelstyle={sloped,above}](G)(N) \Edge[style={bend right}](A)(T)\end{tikzpicture} See also:… Continue Reading →

I stumbled upon a piece of software called KtikZ. The screenshot in that page, together with the fact that Doc-View mode is included in the new Emacs 23, inspired me to try that idea with tikz2pdf. With help from folks… Continue Reading →

Alain Matthes has produced a package (tkz-berge.sty) which should become THE way to draw graphs in LaTeX. It is built on top of Tikz, and so can be easily integrated with beamer presentations. The package can be dowloaded from here,… Continue Reading →

See this paper \documentclass{article}\usepackage{tikz}\pagestyle{empty} \begin{document}\begin{center} \begin{tikzpicture}[style=thick] \foreach \x in {18,90,…,306} { \draw (\x:4cm) circle (2pt) — (\x+72:4cm); \draw (\x:4cm) — (\x:3cm) circle (2pt); \draw (\x:3cm) — (\x+15:2cm) circle (2pt); \draw (\x:3cm) — (\x-15:2cm) circle (2pt); \draw (\x+15:2cm) — (\x+144-15:2cm); \draw… Continue Reading →

See this paper. \documentclass{article}\usepackage{tikz}\pagestyle{empty} \begin{document}\begin{center} \begin{tikzpicture}[style=thick] \foreach \x in {0,30,…,330} { \draw (\x:2cm) circle (2pt) — (\x+30:2cm); } \foreach \x in {0,60,…,300} { \draw (\x:2cm) circle (2pt) — (\x+90:2cm); } \foreach \x in {0,30,…,150} { \draw (\x:2cm) circle (2pt) —… Continue Reading →

\documentclass{article}\usepackage{tikz}\pagestyle{empty} \begin{document}\begin{center} \begin{tikzpicture}[style=thick] \foreach \x in {0,15,…,345} { \draw (\x:3cm) circle (2pt) — (\x+15:3cm); } \foreach \x in {0,45,…,135} { \draw (\x:3cm) circle (2pt) — (\x+180:3cm); } \foreach \x in {15,60,…,330} { \draw (\x:3cm) circle (2pt) — (\x+105:3cm); } \end{tikzpicture}\end{center}\end{document}… Continue Reading →

\documentclass{article} \pagestyle{empty}\usepackage{tikz} \begin{document} \begin{center} \begin{tikzpicture}[style=thick,scale=0.5] \def\pentagon{(18:1cm) circle (4pt) node[above right=-1.75pt]{\tiny $4$} — (90:1cm) circle (4pt) node[above]{\tiny $0$} — (162:1cm) circle (4pt) node[above left=-1.75pt]{\tiny $1$} — (234:1cm) circle (4pt) node[below]{\tiny $2$} — (306:1cm) circle (4pt) node[below]{\tiny $3$} — (18:1cm)} \def\pentagram{(18:1cm) circle… Continue Reading →

The unique smallest cubic graph of girth 8. Drawn from Algebraic Graph Theory by Godsil and Royle, p.72. \documentclass{article}\usepackage{tikz}\pagestyle{empty} \begin{document}\begin{tikzpicture}[style=thick] \foreach \x in {0,36,…,324} { \draw (\x:2cm) circle (2pt) — (\x+144:2cm); \draw (\x-10:3cm) circle (2pt) — (\x+5:4cm); \draw (\x-10:3cm) circle… Continue Reading →

\documentclass{article}\usepackage{tikz}\pagestyle{empty} \begin{document} \begin{center} \begin{tikzpicture}[style=thick] \foreach \x in {0,1,2} \foreach \y in {0,1,2} {\draw (\y,0) — (\x,1);} \foreach \x in {0,1,2}{ \draw (\x,0) circle (2pt); \draw (\x,1) circle (2pt);} \end{tikzpicture} \end{center}\end{document} See also: Original Source by Rafael

If it could be completed to a cubic graph, it would give a cubic Moore graph of diameter 3. I wish I knew how to produce a similar tree, but growing from an edge instead of from a vertex.\documentclass{article} \usepackage{tikz}… Continue Reading →

The smallest cubic graph of girth 5, drawn using TikZ. \documentclass{article}\usepackage{tikz}\pagestyle{empty} \begin{document} \begin{center} \begin{tikzpicture}[style=thick] \draw (18:2cm) — (90:2cm) — (162:2cm) — (234:2cm) — (306:2cm) — cycle; \draw (18:1cm) — (162:1cm) — (306:1cm) — (90:1cm) — (234:1cm) — cycle; \foreach \x… Continue Reading →

The smallest cubic graph of girth 6, or 6-cage, drawn with PS Tricks. This was inspired from the example in The LaTeX Graphics Companion, page 121. \documentclass{article}\usepackage{pstricks,pst-node,multido,ifthen,calc}\pagestyle{empty} \begin{document}\begin{center}\begin{pspicture}(-1,-1.5)(1,1.5) \psset{unit=1.5cm} \newcounter{CtA} \newcounter{Temp} \newcounter{Tempi} \SpecialCoor \degrees[14] \multido{\ia=0+1}{14}{% \setcounter{CtA}{\ia}% \addtocounter{CtA}{1}% \multido{\ib=\value{CtA}+1}{1}{\psline{o-o}(1;\ia)(1;\ib)} }% \multido{\ia=0+2}{7}{%… Continue Reading →