How can I draw a network with labelled vertices and edges?

Question

I would like to draw the graph in the picture below using LaTeX, I want it to be in nice better shape. 1.) The position of the edge labels I would like to center it in middle over or below the edge as in the picture and does not conflict the other labels.

\documentclass[12pt]{article}
\usepackage{graphicx}
\usepackage{tabularx}
\usepackage{comment}
\usepackage{subcaption}
\usepackage{caption}
\usepackage{lscape}
\usepackage{calc}
\usepackage{tikz}
\usepackage{tikz}
\usetikzlibrary{fit,positioning,shapes.geometric}
\begin{document}
\begin{figure}[H]
\begin{center}\setlength\extrarowheight{7pt}
  \begin{minipage}[b]{0.4\textwidth}
\begin{tikzpicture}[x=1.5cm, y=1cm]
%\tikzstyle{every node}=[draw,shape=circle];
    %\node[shape=circle,draw=black, scale=0.7,line width=1.5pt] (v0) at (0,0) {$\textbf{0}$}; 
\path (0:0cm) node[draw,shape=circle, scale=0.7,thick] (v0) {$a1$};
\path (20:2cm) node[draw,shape=circle, scale=0.7,thick] (v1) {$a2$};
\path (60:2cm) node[draw,shape=circle, scale=0.7,thick] (v2) {$a3$};
\path (120:2cm) node[draw,shape=circle, scale=0.7,thick] (v5) {$a4$};
\path (160:2cm) node[draw,shape=circle, scale=0.7,thick] (v6) {$a5$};
\path (70:4cm) node[draw,shape=circle, scale=0.7,thick] (v11) {$a6$};
\path (50:4cm) node[draw,shape=circle, scale=0.7,thick] (v12) {$a7$};
\path (110:4cm) node[draw,shape=circle, scale=0.7,thick] (v13) {$a8$};
\path (130:4cm) node[draw,shape=circle, scale=0.7,thick] (v14) {$a9$};
%\path (90:1.9cm) node[draw=none,shape=circle, scale=0.7,thick] (a10) ;
\path (-80:2cm) node[draw,shape=circle, scale=0.7,thick] (v16) {$a11$};
\path (-120:2cm) node[draw,shape=circle, scale=0.7,thick] (v17) {$a12$};
\path (-110:4cm) node[draw,shape=circle, scale=0.7,thick] (v18){$a13$};
\path (-130:4cm) node[draw,shape=circle, scale=0.7,thick] (v19) {$a14$};
\path thick edge[black] node[below] {\color{black}  $a15$} (v1);
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\path thick edge[black] node[above,right] {\color{black} \small $n1$} (v2);
\path thick edge[black] node[left] {\color{black} \small $n2$} (v0);
\path thick edge[black] node[left] {\color{black} \small $n3$} (v5);
\path thick edge[black] node[left] {\color{black} {\small $n4$}} (v6);
\path thick edge[black] node[below] {\color{black} \small $n5$} (v0);
\path thick edge[black] node[left] {\color{black} \small $n6$} (v11);
\path thick edge[black] node[below] {\color{black} {\small $n7$}} (v12);
\path thick edge[black] node[below left] {\color{black} \small  $n8$} (v12);
%\draw
%(v11) -- (v12) node[pos=.5,above=1mm right=1mm] {$n9$}
\path thick edge[black] node[right] {\color{black} \small $n10$} (v13);
\path thick edge[black] node[below left] {\color{black} \small $n11$} (v14);
\path thick edge[black] node[above left] {\color{black} \small $n12$} (v14);
\path thick edge[black] node[right] {\color{black} \small $n13$} (v16);
\path thick edge[black] node[left] {\color{black} \small $x$} (v17);
\path thick edge[black] node[below] {\color{black} \small $y$} (v17);
\path thick edge[black] node[right] {\color{black} \small $z$} (v18);
\path thick edge[black] node[left] {\color{black} \small $w$} (v19);
\path thick edge[black] node[below] {\color{black} \small $f$} (v19);
\end{tikzpicture}
      \end{minipage}

\quad
        %\end{center}
    %   \end{figure}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%\begin{figure}[H]
%\begin{center}\setlength\extrarowheight{7pt}
  \begin{minipage}[b]{0.4\textwidth}
    \begin{tikzpicture}[x=0.7cm, y=1cm]
    %First place the vertices. Note the names correspond to the labels.
    \node[shape=circle,draw=black, scale=0.7,thick] (v0) at (0,0) {$0g$}; 
    \node[shape=circle,draw=black, scale=0.7,thick] (v8) at (42:3) {$t$};
        \node[shape=circle,draw=black, scale=0.7,thick] (v9) at (105:2.8) {$y$} ;
    \node[shape=circle,draw=black, scale=0.7,thick] (v11) at (155:3) {$tt$} ;
\node[shape=circle,draw=black, scale=0.7,thick] (v6) at (205:3) {$e$} ;
\node[shape=circle,draw=black, scale=0.7,thick] (v2) at (227:4) {$w$} ;
    \node[shape=circle,draw=black, scale=0.7,thick] (v5) at (262:2) {$q$} ;
\foreach \x/\y/\lab in {0/8/left,0/7/below,0/9/right,0/11/below left,0/5/right,0/6/above left,5/2/below right,6/2/left,9/11/above left,7/8/above right}
\draw[thick] (v\x)--node[above, \lab] {\pgfmathparse{int(abs(\x-\y))}{{\pgfmathresult}}} (v\y);
%\draw[thick] (v\x)--node[above, \lab, text=blue] {\pgfmathparse{int(abs(\x-\y))}{\pgfmathresult}} (v\y);  
\end{tikzpicture}

      \end{minipage}

    \end{center}
    \end{figure}


\end{document}

Hello, it's nice of you to ask, but it seems that you have been pleased several times to behave accordingly to this place rules, and still don't. Please be kind to make the first step(s). https://tex.stackexchange.com/help — SebGlav, Feb 16 '21 at 17:29
You already ask similar question and got good answers on them. Why you not use one of them in draw your new not so different images? BTW, so far you not accept any of gotten answer. — Zarko, Feb 16 '21 at 19:04
Does this answer your question? Draw a graph with a common vertex — Roland, Feb 16 '21 at 23:44

score 3 · Answer 1 · answered Feb 16 '21 at 19:24

OK, I'll try again, but you'll have to finish it...

\documentclass[12pt]{article}
\usepackage{tikz}
\begin{document}
\begin{tikzpicture}
    \tikzset{vnode/.style={draw,thick,circle,minimum width=1cm,inner sep=0pt}};
    \def\dist{3}

    % Nodes

    \begin{scope}[every node/.style={vnode}]
        \node (a1) {$a_1$};
        \foreach \i [count=\ang from 2] in {2,3,11,10,9,6}
            {
            \path (a1) --++ (60*\ang:\dist) node (a\i) {$a_{\i}$};
            }

        \foreach \i [count=\ang] in {5,4}
            {
            \path (a2) --++ (30+60*\ang:\dist) node (a\i) {$a_{\i}$};
            }

        \foreach \i [count=\ang from 0] in {8,7}
            {
            \path (a6) --++ (30+60*\ang:\dist) node (a\i) {$a_{\i}$};
            }

        \foreach \i [count=\ang from 0] in {12,13}
            {
            \path (a11) --++ (210+60*\ang:\dist) node (a\i) {$a_{\i}$};
            }
    \end{scope}

    % Paths

    \path%[every node/.style={sloped}]
        (a1)    edge node[left] {N6} (a2)
                edge node[above] {N5} (a3)
                edge node[left] {N7} (a11)
                edge node[right] {N12} (a10)
                edge node[above] {N13} (a9)
                edge node[right] {N14} (a6)
        (a2)    edge node[right] {N3} (a5)
                edge node[below left] {N2} (a4)
        (a4)    edge node[above left] {N1} (a5)

        % To be continued...
    ;

\end{tikzpicture}


\end{document}

Remember it's only one straightforward approach to let you learn from it. Be kind and do your part, now ;)

How can I draw a network with labelled vertices and edges?

1 Answers1