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如何自訂該流程圖的箭頭？

tag-icon • tag-icon formatting tikz-arrows charts
如何自訂該流程圖的箭頭？ 
\begin{document}
\pagestyle{empty}
  % Define block styles
 \tikzstyle{decision} = [diamond, draw, fill=white!20, 
text width=5.5em, text badly centered, node distance=5cm, inner sep=0pt]
 \tikzstyle{block} = [rectangle, draw, fill=white!20, 
text width=5em, text centered, rounded corners, minimum height=4em]
\tikzstyle{line} = [draw, -latex']
\tikzstyle{cloud} = [draw, ellipse,fill=red!20, node distance=5cm,
minimum height=5em]

 \begin{tikzpicture}[node distance = 4cm, auto]
% Place nodes
\node [block] (sume) {1.-Sume variables de holgura (forma estándar)};
\node [block, below of=sume] (calcu) {2.-Calcule una primer solución básica factible};
\node [decision, below of=calcu] (decide) {3.-¿Existe una solución básica factible adyacente que sea mejor?};
\node [block, right of=decide, node distance=5cm] (no) {5.-Entonces la solucion basica factible actual es óptima};
\node [block, left of=decide, node distance=5cm] (yes) {4.-Entonces calcule el valor de la funcion $Z$ para la nueva solucion básica factible};


% Draw edges
\path [line] (sume) -- (calcu);
\path [line] (calcu) -- (decide);    
\path [line] (decide) -- node {Si} (yes);
\path [line] (yes) -| (calcu);    
\path [line] (decide) -- node {No} (no);

\end{tikzpicture}


\end{document}

我想創建這個流程圖

這是我第一次在 Latex 中建立流程圖，到目前為止我已經這樣做了，結果看起來很糟糕。有人可以幫我使它看起來與我的圖像相似嗎？

在此輸入影像描述

  1. 這是我所做的結果，問題是從4到2的箭頭是翻轉的，我該如何解決這個問題
  2. 什麼指令使箭頭看起來更粗？

答案1

這會是你所尋求的嗎？

  1. 問題是從4到2的箭頭是翻轉的，我該如何解決這個問題

    \path [line] (yes.west) --+(-1cm,0) |- (h); %(yes.west)從左側繪製1cm，然後垂直向上和水平移動到(h)程式碼用來node定義的位置(h)

  2. 什麼指令使箭頭看起來更粗？修改linetizstyle 中定義的樣式，加入thick, or very thick, orline width=xx pt

  3. 請檢查應該使用 \tikzset 或 \tikzstyle 來定義 TikZ 樣式嗎？

  4. 如果您關於使箭頭看起來更粗的問題與箭頭有關，請檢查是否可以更改 TikZ/PGF 中箭頭的大小？

產生下面的圖像

在此輸入影像描述 程式碼

\documentclass[tikz,border=1cm]{standalone}
\usetikzlibrary{matrix, shapes, arrows,calc, positioning}

\begin{document}
\pagestyle{empty}
  % Define block styles
 \tikzstyle{decision} = [diamond, draw, fill=white!20, 
text width=3cm, text badly centered, node distance=5cm, inner sep=0pt]
 \tikzstyle{block} = [rectangle, draw, fill=white!20, 
text width=3cm, text centered, rounded corners, minimum height=4em]
\tikzstyle{line} = [draw, -latex']
\tikzstyle{cloud} = [draw, ellipse,fill=red!20, node distance=3cm,
minimum height=5em]

 \begin{tikzpicture}[node distance = 4cm, auto]
% Place nodes
\node [block] (sume) {1.-Sume variables de holgura (forma estándar)};
\node [block, below of=sume] (calcu) {2.-Calcule una primer solución básica factible};
\node [decision, below of=calcu] (decide) {3.-¿Existe una solución básica factible adyacente que sea mejor?};
\node [block, below right =1cm and 1 cm of decide, node distance=5cm] (no) {5.-Entonces la solucion basica factible actual es óptima};
\node [block, below left = 1cm and 1cm of decide, node distance=5cm] (yes) {4.-Entonces calcule el valor de la funcion $Z$ para la nueva solucion básica factible};


% Draw edges
\path [line] (sume) -- (calcu);
\path [line] (calcu) --node[pos=0.5](h){} (decide);    
\path [line] (decide) -| node[pos=0.2,above] {Si} (yes);
\path [line] (yes.west) --+(-1cm,0) |- (h);    
\path [line] (decide) -| node[pos=0.2,above] {No} (no);

\end{tikzpicture}


\end{document}

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