[Tex/LaTex] Forest linguistics tree sideways/rotated

Question

I've been searching around now to see if I could find a solution for this, without any luck. Hence, I ask the question to you.

I am using Lyx with the Linguistics module, and I want to basically make a simple binomial tree, with the Starting note in the middle, and the branches going out to the right. Similar to this:

An example of the simple code just currently looks like, written inside the custom inset, Structure tree:

[50 [60][40] ]

But that just gives me the three pointing downwards/south. How to I make the branches go out to the right/east?

Best,
Anders

Answer 1

Are you using forest? You've tagged it, but don't say. If you're using Forest, put for tree={grow'=0} in the tree's preamble i.e. before the first square bracket.

\documentclass[border=10pt]{standalone}
\usepackage[linguistics]{forest}
\begin{document}
\begin{forest}
  for tree={grow'=0}
  [ A 
    [ B ]
    [ C ]
  ]
\end{forest}
\end{document}