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如何改善決策樹的外觀

tag-icon • tag-icon tikz-pgf formatting
如何改善決策樹的外觀

我是在乳膠中創建圖形（在本例中為決策樹）的新手。我已經弄清楚如何繪製我需要的樹，但我需要一些幫助才能使它看起來更好。具體來說，我想讓文字標籤（例如無/部分/完整/否/是）與它們標記的路徑平行。下面是我的程式碼和我的樹的圖像。我在樹上放置了紅色箭頭，顯示了我希望不同文字標籤的方向。感謝您的幫忙！

\documentclass[12pt, fullpage,letterpaper]{article}

\usepackage{verbatim}
\usepackage{tikz}
\usetikzlibrary{calc, shapes}
\usepackage{amsmath, amssymb}

\begin{document}
\tikzset{
    Patrons/.style = {text = black, label = center:\textsf{Patrons}},
    Friday/.style = {text = black, label = center:\textsf{Friday}},
    Hungry/.style = {text = black, label = center:\textsf{Hungry}},
    No/.style = {text = black, label = center:\textsf{No}},
    Yes/.style = {text = black, label = center:\textsf{Yes}}
}

\begin{tikzpicture}[
    scale = 1, transform shape, thick,
    every node/.style = {draw, rectangle, minimum size = 15mm},
    grow = down, 
    level 1/.style = {sibling distance=4cm},
    level 2/.style = {sibling distance=4cm}, 
    level 3/.style = {sibling distance=2cm}, 
    level distance = 3cm
    ]
  
  \node [Patrons] (A) {}
  child { node [No] (B) {}} 
  child { node [Yes] (C) {}}
  child { node [Friday] (D) {}
    child { node [Hungry] (E) {}
        child { node [No] (G) {}}
        child { node [Yes] (H) {}}
    }
    child { node [No] (F) {}}
  };
  
  % Labels
  \begin{scope}[nodes = {draw = none}]
    \path (A) -- (B) node [near start, left] {None};
    \path (A) -- (C) node [near start, left] {Some};
    \path (A) -- (D) node [near start, right] {Full};
    \path (D) -- (E) node [near start, left] {Yes};
    \path (E) -- (F) node [near start, left] {No};
    \path (E) -- (G) node [near start, right] {Yes};
    \path (D) -- (H) node [near start, right] {No};
  \end{scope}
\end{tikzpicture}
\end{document}

答案1

對樹使用簡單的樣式－例如只需要填入名稱－

child { node [P] (D) {Friday} %--- only Friday needs to be filled now

從而避免重複

類似地，對於標籤，設定了帶有傾斜選項的簡單樣式 - 看一下 - 標籤部分中的節點也需要放置在緊接其後--而不是末尾

在此輸入影像描述

\documentclass[12pt, fullpage,letterpaper]{article}

\usepackage{verbatim}
\usepackage{tikz}
\usetikzlibrary{calc, shapes}
\usepackage{amsmath, amssymb}

\begin{document}
    \tikzset{
        P/.style = {text = black, label = center:\textsf{#1}},
%       Friday/.style = {text = black, label = center:\textsf{#1}},
%       Hungry/.style = {text = black, label = center:\textsf{Hungry}},
%       No/.style = {text = black, label = center:\textsf{No}},
%       Yes/.style = {text = black, label = center:\textsf{Yes}}
    }
    
    \begin{tikzpicture}[
    scale = 1, transform shape, thick,
    every node/.style = {draw, rectangle, minimum size = 15mm},
    grow = down, 
    level 1/.style = {sibling distance=4cm},
    level 2/.style = {sibling distance=4cm}, 
    level 3/.style = {sibling distance=2cm}, 
    level distance = 3cm
    ]
    
    \node [P] (A) {}
    child { node [P] (B) {}} 
    child { node [P] (C) {}}
    child { node [P] (D) {Friday}
        child { node [P] (E) {}
            child { node [P] (G) {}}
            child { node [P] (H) {}}
        }
        child { node [P] (F) {}}
    };
    
    % Labels
    \begin{scope}[nodes = {draw = none},pos=0.3, sloped,left]
    \path (A) -- node [yshift=5pt] {None} (B) ;
%   \path (A) -- (C) node [] {Some};
%   \path (A) -- (D) node [] {Full};
%   \path (D) -- (E) node [] {Yes};
%   \path (E) -- (F) node [] {No};
%   \path (E) -- (G) node [] {Yes};
%   \path (D) -- (H) node [] {No};
    \end{scope}
    \end{tikzpicture}
\end{document}

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