Csdrhrt

I'm trying to draw a derivation tree for a simple grammar using tikz-qtree.

Here is my current code:

documentclass[11pt]{article}

usepackage{tikz}

usetikzlibrary{shapes,arrows,calc}

usepackage{tikz-qtree}



% ----------



begin{document}

    begin{tikzpicture}

        tikzset{grow'=right}

        tikzset{every tree node/.style={anchor=base west}}

        Tree [.$SS$ [.$(S)$ $()$]

                [.$(S)$

                    [.$((S))$ $(())$]

                ]

            ]

    end{tikzpicture}

end{document}

My intended result looks like this:

                -(S)------------()                

              -/                                  

            -/                                    

          -/                                      

        -/                                        

      -/                                          

   SS -                                          

        -                                        

          -                                      

            -                                    

              -                                  

                -                                

                  -(S)---------((S))----------(())

When I compile the document, I get a bunch of missing end brace complaints "./main.tex:21: Missing } inserted", but the square brackets in the Tree are balanced as far as I can see.

What am I doing wrong?

Here are three different ways to draw the graph

tikz-qtree solution

Take care of the white space!

documentclass[11pt]{article}

usepackage{tikz}

usetikzlibrary{shapes,arrows,calc}

usepackage{tikz-qtree}



% ----------



begin{document}

begin{tikzpicture}

tikzset{grow'=right}

tikzset{every tree node/.style={anchor=base west}}

Tree [.$SS$ [.$(S)$ $()$ ] [.$(S)$ [.$((S))$ $(())$ ] ] ]

end{tikzpicture}

end{document}

Pure TikZ solution

documentclass[tikz]{standalone}

usetikzlibrary{positioning}

begin{document}

begin{tikzpicture}[node distance=0.5cm]

node (ss) {$SS$};

node[above right=of ss] (sa) {$(S)$};

node[right=of sa] (br1) {$()$};

node[below right=of ss] (sb) {$(S)$};

node[right=of sb] (ssb) {$((S))$};

node[right=of ssb] (br2) {$(())$};

draw (br1) -- (sa) -- (ss) -- (sb) -- (ssb) -- (br2);

end{tikzpicture}

end{document}

tikzcd solution

documentclass{standalone}

usepackage{tikz-cd}

begin{document}

begin{tikzcd}[every arrow/.append style={dash}]

& (S) arrow[r] & ()\

SS arrow[ru]arrow[rd] & &\

& (S) arrow[r] & ((S)) arrow[r] & (())

end{tikzcd}

end{document}

I'd like to persuade you to switch to forest.

documentclass{article}

usepackage[edges]{forest}

begin{document}

begin{forest}

for tree={grow=east}

 [$SS$ 

   [$(S)$ $()$]

                [$(S)$

                    [$((S))$ $(())$]

                ]

            ]

end{forest}

end{document}