spaghetti-source

\documentclass{article}
\usepackage{tikz}
\usetikzlibrary{positioning,arrows,calc}
\usepackage{pgfplots}
\begin{document}

%%%
\tikzstyle{node}=[draw=black,circle,inner sep=0,minimum size=10]
\def \nodes {
  1/-5/8.6,