Graphics, Figures & Tables ⇒ tikZ | Parallel Edges between Nodes

[kirpich]

I'm looking for a simple way to draw the following picture using tikZ. Namely, I would like to only specify the coordinates of the cities and then to connect them by edges using a \foreach loop. This would be easy if there were no directed edges at this picture.

[Stefan Kottwitz]

Hi kirpich,

welcome to the board!

Actually every connection consists of three edges of the same type, so drawing edge, arrow to the left and to the right in one step of the \foreach loop could be a possibility.

A different approach would be making three \foreach loops, one for the connecting edge, one for the arrows in one direction, with the label on it, and one for the other direction.

Perhaps show, what you already got, if just the edges remain to be a problem.

Stefan

[kirpich]

Hi Stefan,

Well, this is what I currently have:

Code: Select all

  \begin{scope}
  \foreach \x/\y/\name/\label/\where in {1.2/1.4/a/{El Paso}/below, 1/3.2/b/Albuquerque
/above, 2.5/3/c/Amarillo/below, 3.8/4/d/Wichita/above, 4.3/3.3/e/Tulsa/45, 5.2/2.8/f/{Little Rock}/right, 4.2/2/g/Dallas/left, 4.8/1/h/Houston/right, 3.6/0.6/i/{San Antonio}/below} {
    \draw (\x,\y) circle (.4mm);
    \node[draw,circle,minimum size=2mm,inner sep=0mm,label=\where:{\footnotesize \label}] (\name) at (\x,\y) {};
  }
  
  \foreach \s/\t in {a/b, b/c, c/e, e/d, e/f, f/g, h/g, h/i}
    \path[draw] (\s) edge (\t);
  \end{scope}