# How to specify anchor styles in {forest} trees?

I'm using {forest} to make a simple tree and I want the edges for all nodes to be filled arrows (southward directed) of a larger than normal size (so that the image I'm creating resizes well when shrunken down). I've gotten as far as specifying the arrows, but am stuck... How do I transform the itty bitty arrows into nice big filled arrows?

\begin{forest}
for tree={edge=->}
[{\textbf{Footbridge Dilemma}}, circle, draw, text width = 5em, text centered
[{\textbf{Push \\Man}}, circle, draw, text width = 5em, text centered
[{\textbf{Man \\Dies}}, circle, draw, text width = 5em, text centered
[{\textbf{Workmen \\Saved}}, circle, draw, text width = 5em, text centered]
]
]
[{\textbf{Don't Push}}, circle, draw, text width = 5em, text centered
[{\textbf{Man \\Lives}}, circle, draw, text width = 5em, text centered
[{\textbf{Workmen Die}}, circle, draw, text width = 5em, text centered]
]
]
]
\end{forest}

• Welcome to TeX.SX! Instead of posting a code fragment, it's much better to add a minimal working example (MWE) that illustrates your problem. It will be much easier for us to reproduce your situation and find out what the issue is when we see compilable code, starting with \documentclass{...} and ending with \end{document}. – Alan Munn May 15 '13 at 15:54

You can add a line width parameter to the edge parameter:

\documentclass{article}
\usepackage{forest}

\begin{document}

\begin{forest}
for tree={edge={->,line width=4pt}}
[{\textbf{Footbridge Dilemma}}, circle, draw, text width = 5em, text centered
[{\textbf{Push \\Man}}, circle, draw, text width = 5em, text centered
[{\textbf{Man \\Dies}}, circle, draw, text width = 5em, text centered
[{\textbf{Workmen \\Saved}}, circle, draw, text width = 5em, text centered]
]
]
[{\textbf{Don't Push}}, circle, draw, text width = 5em, text centered
[{\textbf{Man \\Lives}}, circle, draw, text width = 5em, text centered
[{\textbf{Workmen Die}}, circle, draw, text width = 5em, text centered]
]
]
]
\end{forest}
\end{document}


• D'oh! Thanks. It's always the little things. – adam May 15 '13 at 16:13