Adding Weights to a Tiks Graph in LaTeX Document

[Gavin Harper]

Does anyone have a way to extend a current graph I have drawn with Tiks in a LaTeX document to include weights.

The code I have is this:

\begin{center}
        \begin{tikzpicture}
                [scale=1,auto,every node/.style={circle,fill=blue!20}]
                \node (v1) at (2, 4) {$ v_1 $};
                \node (v2) at (0, 2) {$ v_2 $};
                \node (v3) at (4, 2) {$ v_3 $};
                \node (v4) at (6, 0) {$ v_4 $};

                \draw (v1) -- (v2);
                \draw (v1) -- (v3);
                \draw (v3) -- (v4);
        \end{tikzpicture}
\end{center}

Thank you very much in advance!

 

[NateD]

To add weights to your graph you can use the following code:\begin{center} \begin{tikzpicture} [scale=1,auto,every node/.style={circle,fill=blue!20}] \node (v1) at (2, 4) {$ v_1 $}; \node (v2) at (0, 2) {$ v_2 $}; \node (v3) at (4, 2) {$ v_3 $}; \node (v4) at (6, 0) {$ v_4 $}; \draw (v1) -- node[above] {$w_{1,2}$} (v2); \draw (v1) -- node

{$w_{1,3}$} (v3); \draw (v3) -- node[below] {$w_{3,4}$} (v4); \end{tikzpicture}\end{center}This will add labels to each edge with the corresponding weight. You can adjust the position of the label with the "above", "below", "left", or "right" option.​