如何在 tikz 树的节点中断线

Question

这是我的代码：

\begin{tikzpicture}
\tikzset{edge from parent/.style=
{draw,
    edge from parent path={(\tikzparentnode.south)
                            -- +(0,-5pt)
                            -| (\tikzchildnode)}}}

\Tree   [.Fibres
        [.Natural
            [.Animal Silk
            ]
            [.Vegetable
                [.Cotton\\Linen\\Hemp\\Ramie\\Jute ]
            ]
            [.Mineral   Asbestos ]
        ]
        [.Man-made
            [.{Natural Polymers} 
                [.XYZ ]
                [.XYZ ]
                [.XYZ ]
            ]
            [.{Synthetic Polymers}
                [.XYZ ]
                [.XYZ ]
            ]
        ]
    ]

\end{tikzpicture}

这给了我一棵好树。但我想让“棉麻麻麻黄麻”一个接一个地显示，而不是紧挨着一个。有人能帮忙吗？

Answer 1

forest是一个强大的树形绘制工具，尽管杰西的回答在这种情况下具有简单的优点。然而，值得一提的是，下面是具有 的同一棵树forest：

\documentclass[tikz, border=5pt]{standalone}
\usepackage{forest}
\begin{document}
\begin{forest}
  for tree={
    align=center,
    edge path={
      \noexpand\path [draw, \forestoption{edge}] (!u.parent anchor) -- +(0,-15pt) -| (.child anchor)\forestoption{edge label};
    },
    if n=2{
      if ={equal(n_children("!u"),3)}{calign with current}{}}{},
  }
  [Fibres
        [Natural
            [Animal
              [Silk
              ]
            ]
            [Vegetable
                [Cotton\\Linen\\Hemp\\Ramie\\Jute
                ]
            ]
            [Mineral
              [Asbestos
              ]
            ]
        ]
        [Man-made
            [Natural Polymers
                [XYZ
                ]
                [XYZ
                ]
                [XYZ
                ]
            ]
            [Synthetic Polymers
                [XYZ
                ]
                [XYZ
                ]
            ]
        ]
    ]
\end{forest}
\end{document}

Answer 2

就像这样。定义一个具有自己样式的本地节点，如下所示。

\tikzset{my node/.style={text width=2cm,align=center}}  % left or right are available

此外，vegetable没有居中，可以通过为邻居设置相等的长度来改进，例如

\makebox[\widthof{Vegetable}]{Animal}

代码

\documentclass[a4paper,oneside,article]{memoir}

\usepackage{tikz-qtree}
\usetikzlibrary{trees}
\usepackage{calc}

\begin{document}

OP's result ---

\begin{tikzpicture}
\tikzset{edge from parent/.style=
{draw,
    edge from parent path={(\tikzparentnode.south)
                            -- +(0,-5pt)
                            -| (\tikzchildnode)}}}

\Tree   [.Fibres
        [.Natural
            [.Animal Silk
            ]
            [.Vegetable
                [.Cotton\\Linen\\Hemp\\Ramie\\Jute ]
            ]
            [.Mineral   Asbestos ]
        ]
        [.Man-made
            [.{Natural Polymers} 
                [.XYZ ]
                [.XYZ ]
                [.XYZ ]
            ]
            [.{Synthetic Polymers}
                [.XYZ ]
                [.XYZ ]
            ]
        ]
    ]

\end{tikzpicture}


\medskip

Proposed result ---

\tikzset{my node/.style={text width=2cm,align=center}}


\tikzset{edge from parent/.style=
{draw,
    edge from parent path={(\tikzparentnode.south)
                            -- +(0,-5pt)
                            -| (\tikzchildnode)}}}
\begin{tikzpicture}
\Tree   [.Fibres
        [.Natural
            [.\makebox[\widthof{Vegetable}]{Animal} Silk
            ]
            [.Vegetable
                [.\node[my node]{                   % <--- here
                Cotton\\Linen\\Hemp\\Ramie\\Jute};
                ]
            ]
            [.\makebox[\widthof{Vegetable}]{Mineral}   Asbestos ]
        ]
        [.Man-made
            [.{Natural Polymers} 
                [.XYZ ]
                [.XYZ ]
                [.XYZ ]
            ]
            [.{Synthetic Polymers}
                [.XYZ ]
                [.XYZ ]
            ]
        ]
    ]

\end{tikzpicture}
\end{document}