[Tex/LaTex] How to create 2 arrows rather than double headed arrow with Tikz

arrowsgraphstikz-arrows

I want to display two separate arrows in this graph between nodes 1&4 and nodes 1&3.
I read somewhere about bending the arrows, but I'd really like them to remain straight. Also saw there was an option to make them leave nodes at different angles but can't work out the code for this. Could someone help me please!

This is the code I have

\begin{tikzpicture}
\tikzset{vertex/.style = {shape=circle,draw,minimum size=1.5em}}
\tikzset{edge/.style = {->,> = latex'}}
% vertices
\node[vertex] (1) at  (0,0) {$1$};
\node[vertex] (2) at  (2,0) {$2$};
\node[vertex] (3) at  (0,-2) {$3$};
\node[vertex] (4) at  (2,-2) {$4$};
%edges
\draw[edge] (1) to (2);
\draw[edge] (1) to (3);
\draw[edge] (1) to (4);
\draw[edge] (2) to (3);
\draw[edge] (2) to (4);
\draw[edge] (3) to (1);
\draw[edge] (4) to (3);
\draw[edge] (4) to (1);
\end{tikzpicture}

I'd like it to look similar to this, with two arrows rather than one

Best Answer

You can access the point on the edge of a node that is at a specific angle using nodename.angle. See an example below where I've used this.

\documentclass[border=5mm]{standalone}
\usepackage{tikz}
\usetikzlibrary{arrows}
\begin{document}
\begin{tikzpicture}
\tikzset{vertex/.style = {shape=circle,draw,minimum size=1.5em}}
\tikzset{edge/.style = {->,> = latex'}}
% vertices
\node[vertex] (1) at  (0,0) {$1$};
\node[vertex] (2) at  (2,0) {$2$};
\node[vertex] (3) at  (0,-2) {$3$};
\node[vertex] (4) at  (2,-2) {$4$};
%edges
\draw[edge] (1) to (2);
\draw[edge] (1.260) to (3.100);
\draw[edge] (1.325) to (4.125);
\draw[edge] (2) to (3);
\draw[edge] (2) to (4);
\draw[edge] (3.80) to (1.280);
\draw[edge] (4) to (3);
\draw[edge] (4.145) to (1.305);
\end{tikzpicture}
\end{document}

Related Solutions

[Tex/LaTex] Drawing graphs with multiline labels for vertex/edge

I'm the author of this package. The good news are the new versions of tkz-graph and tkz-berge will be on the ctan servers this week (i'm working on the docs actually), the bad news are that I modified some macros. I'm not sure to understand exactly what you want but an answer is that you can put TikZ's code inside you code.

Vertices are nodes so you can add multiple labels if you want with the option label= , if you want adding a text you can use the option text width

something like :

  \SO(P){X1}
  \node[text width=2cm,left=1cm] (X1){the protocol starts here};

Another possibility :

\begin{tikzpicture}
{  \SetVertexNoLabel   
   \Vertex[style={label=60:A}]{A}}
 \SO[Lpos=180,
     LabelOut,
     L= {the protocol starts here},
     style={text width=2cm}](A){B}
 \end{tikzpicture}

But there are other ways to do this. You can use label. In your code you used "position" , it's not very fine because it's a problem to use "scale".

In 12 hours, I will upload the new version of tkz-graph. I the new version node distanceis obsolete, now I added an option unit and a macro \tkzGraphUnit=6 instead of `\tikzset{node distance=6cm}.

[Tex/LaTex] Referencing a Vertex that has Math Typesetting inside it to make an Edge

The letters in the first examples serve as node labels hence referencing them needs text chars/numbers. If you want to put other types of labels you need to use L=<special chars> options. If L= option is empty the node label automatically becomes the visual label.

\documentclass[border=5mm]{standalone}
\usepackage{tkz-graph}

\begin{document}
\begin{tikzpicture}
\show\Vertex
\Vertex[L=$\frac{x}{y}$,x=1,y=6]{A};
\Vertex[L=$2^n$,x=1,y=5]{B}
\Vertex[L=$t$,x=1,y=4]{T}
\Edge[label= 20](B)(T)
\end{tikzpicture}
\end{document}

enter image description here

Best Answer

Related Solutions

[Tex/LaTex] Drawing graphs with multiline labels for vertex/edge

[Tex/LaTex] Referencing a Vertex that has Math Typesetting inside it to make an Edge

Related Question