[Tex/LaTex] Align all leaf nodes in tikz-qtree

Question

I am trying to reproduce this graph:

I've read in tikz-qtree documentation that I need to compute the size from the root as a multiple of level distance, but I can get it to work. So far I have:

\documentclass[ twoside,openright,titlepage,numbers=noenddot,headinclude,%1headlines,% letterpaper a4paper
            footinclude=true,cleardoublepage=empty,abstractoff, % <--- obsolete, remove (todo)
            BCOR=5mm,paper=a4,fontsize=11pt,%11pt,a4paper,%
            ngerman,american,%
            ]{scrreprt}

\usepackage{tikz-qtree,tikz-qtree-compat}
\usetikzlibrary{arrows,decorations.markings,babel}
\begin{document}
\begin{tikzpicture}[every node/.style={align=left}]
  \tikzset{
    edge from parent/.style={
      draw,edge from parent
      path={(\tikzparentnode.south)-- +(0,-8pt)-| (\tikzchildnode)}
    },
%    level 2/.style={level distance=50pt},
%    frontier/.style={distance from root=150pt} % Align leaf nodes
  }

   \Tree [.S
             [.NP
                [.Rolls-Royce ] [.Motor ] [.Cars ] [.Inc ]
             ]
             [.VP
                [.said ]
                [.SBAR
                   [.NONE ]
                   [.S
                      [.NP [.it ] ]
                      [. VP
                         [.expects ]
                         [.S
                            [.NP
                               [.its ] [.U.S ] [. sales ]
                            ]
                            [.VP
                               [. to ]
                               [. VP
                                  [.remain ]
                                  [.ADJP [. steady ] ]
                                  [.PP
                                     [.at ]
                                     [.NP
                                        [.QP [.about ] [.1200 ] ]
                                        [.cars ]
                                     ]
                                  ]
                               ]
                            ]
                         ]
                      ]
                   ]
                ]
             ]
            ]
\end{tikzpicture}
\end{document}

But the result is this (does not fit the page):

What I am doing wrong?

So far I tried this recomendations:

• aligning several trees to the baseline
• Align leaves of a tree

Answer 1

May I suggest Forest for the tree and sidewaysfigure for the placement?

First, the tree:

\documentclass[tikz,border=10pt]{standalone}
\usepackage[edges,linguistics]{forest}
\begin{document}
\begin{forest}
  forked edges,
  where n children=0{tier=terminus}{},
  [S
     [NP
       [Rolls-Royce\\NNP]
       [Motor\\NNP]
       [Cars\\NNPS]
       [Inc\\NNP]
     ]
     [VP
       [said\\VBD]
       [SBAR
         [-NONE-]
         [S
           [NP
             [it\\PRP]
           ]
           [VP
             [expects\\VBZ]
             [S
               [NP
                 [its\\PRP\$]
                 [U.S\\NNP]
                 [sales\\NNS]
               ]
               [VP
                 [to\\TO]
                 [VP
                   [remain\\VB]
                   [ADJP
                     [steady\\JJ]
                   ]
                   [PP
                     [at\\IN]
                     [NP
                       [QP
                         [about\\IN]
                         [1200\\CD]
                       ]
                       [cars\\NNS]
                     ]
                   ]
                 ]
               ]
             ]
           ]
         ]
       ]
     ]
   ]
\end{forest}
\end{document}

Even set sideways, the tree is too wide. Rather than scaling it, which should be a choice of last resort, it would be better to use a smaller font size, such as \scriptsize and to reduce the space between the nodes by changing s sep. Making these changes, the tree fits and will be more legible than one which was simply scaled. This is especially true if you are using optically sized fonts.

\documentclass[twoside,openright,titlepage,numbers=noenddot,headinclude,  footinclude=true,cleardoublepage=empty,abstractoff,BCOR=5mm,paper=a4,fontsize=11pt,ngerman,american]{scrreprt}
\usepackage[edges,linguistics]{forest}
\usepackage{rotating}
\begin{document}
\begin{sidewaysfigure}
  \centering
  \scriptsize
  \begin{forest}
    forked edges,
    where n children=0{tier=terminus}{},
    for tree={
      s sep'=1pt,
    },
    [S
      [NP
        [Rolls-Royce\\NNP]
        [Motor\\NNP]
        [Cars\\NNPS]
        [Inc\\NNP]
      ]
      [VP
        [said\\VBD]
        [SBAR
          [-NONE-]
          [S
            [NP
              [it\\PRP]
            ]
            [VP
              [expects\\VBZ]
              [S
                [NP
                  [its\\PRP\$]
                  [U.S\\NNP]
                  [sales\\NNS]
                ]
                [VP
                  [to\\TO]
                  [VP
                    [remain\\VB]
                    [ADJP
                      [steady\\JJ]
                    ]
                    [PP
                      [at\\IN]
                      [NP
                        [QP
                          [about\\IN]
                          [1200\\CD]
                        ]
                        [cars\\NNS]
                      ]
                    ]
                  ]
                ]
              ]
            ]
          ]
        ]
      ]
    ]
  \end{forest}
\end{sidewaysfigure}
\end{document}