用坐标绘制箭头

Question

您需要稍微清理一下代码。有一些冗余定义，例如fill=cyan,draw=none,draw=cyan!40,fill=cyan!10。最后一个定义始终在前面，因此您可以删除第一个定义。

然后，你可能想使用\tikzset而不是\tikzstyle（虽然关于哪一个更好可能会有一些争议，但我认为使用\tikzset已经成为标准）。此外，你需要将你的风格分配给某个东西。你不能简单地写，[->,>=stealth',shorten >=1pt]因为这不属于任何东西。你需要告诉 Ti钾circuloZ 应将此定义应用于哪些元素。其他样式（如cuadrado等）已完成此操作。

为了绘制箭头，您可以使用\draw宏并连接不同的节点，或多或少就像已经为黑线完成的那样。

您已经加载了shapes带有真实椭圆节点的库。您可以利用它。为了在节点内输入换行符，您需要为此节点设置对齐方式。

下面是一个简化的示例，它使用部分代码来帮助您入门。

\documentclass[border=5pt]{standalone}

\usepackage{amsmath}
\usepackage{tikz}
\usetikzlibrary{positioning,calc}
\usetikzlibrary{arrows,shapes}

\tikzset{
 % flecha
 flecha/.style={->,>=stealth',green!50!black,shorten >=1pt}, 
 % estilo circulo
 circulo/.style={circle,text=black,draw=cyan!40, fill=cyan!10, very thick, minimum size=9mm}, 
 % estilo cuadrado
 cuadrado/.style={rectangle,text=black,draw=blue!40, fill=blue!10, very thick, minimum size=6mm, minimum width=11mm}, 
 % estilo cuadrado pequeño
 cuadrado2/.style={cuadrado, minimum size=3mm, minimum width=7mm, minimum height=5mm}, 
 % estilo elipse
 elipse/.style={rectangle,rounded corners=8,text=black,draw=cyan!40, fill=cyan!10, very thick, minimum size=6mm}, 
 % elipse real
 elipse2/.style={ellipse,text=black,draw=cyan!40, fill=cyan!10, very thick, minimum size=6mm, inner sep=1pt}, 
 % cuadrado transparente
 transparente/.style={rectangle,fill=white,draw=none,text=black,minimum size=6mm}
}

\begin{document}
\begin{tikzpicture}
%[remember picture,overlay,shift={($(current page.west)+(5.5cm,-3cm)$)}]

% G1
\node[cuadrado] (g1_1) {$(y_m)$};
\node[circulo] (g1_2) [left = 1cm of g1_1] {$y_m$};
\node[circulo] (g1_3) [right = 1cm of g1_1] {$\neg y_m$};
\node[cuadrado] (g1_4) [above left = 0.5cm of g1_2] {$y_m$};
\node[cuadrado] (g1_6) [above right = 0.5cm of g1_3] {$\neg y_m$};
\node[cuadrado] (g1_8) [above right = 0.5cm of g1_2] {$[y_m^k]$};
\node[cuadrado] (g1_9) [above left = 0.5cm of g1_3] {$[\neg y_m^k]$};
\node[cuadrado] (g1_10) [above = 0.5cm of g1_8] {$[y_m^1]$};
\node[cuadrado] (g1_11) [above = 0.5cm of g1_9] {$[\neg y_m^1]$};

% G3
\node[cuadrado] (g3_1) [above = 8cm of g1_1] {$(x_n)$};
\node[circulo] (g3_2) [left = 1cm of g3_1] {$x_n$};
\node[circulo] (g3_3) [right = 1cm of g3_1] {$\neg x_n$};
\node[cuadrado] (g3_4) [above left = 0.5cm of g3_2] {$x_n$};
\node[cuadrado] (g3_5) [below left = 0.5cm of g3_2] {$\langle x_n\rangle$};
\node[cuadrado] (g3_6) [above right = 0.5cm of g3_3] {$\neg x_n$};
\node[cuadrado] (g3_7) [below right = 0.5cm of g3_3] {$\langle \neg x_n\rangle$};
\node[cuadrado] (g3_8) [above right = 0.5cm of g3_2] {$[x_m^k]$};
\node[cuadrado] (g3_9) [above left = 0.5cm of g3_3] {$[\neg x_m^k]$};
\node[cuadrado] (g3_10) [above = 0.5cm of g3_8] {$[x_m^1]$};
\node[cuadrado] (g3_11) [above = 0.5cm of g3_9] {$[\neg x_m^1]$};

% G10
\node[circulo] (g10_1) [below = 1.5cm of g1_1] {$u_0$};
\node[cuadrado] (g10_2) [below left = 0.6cm of g10_1] {$u_0$};
\node[cuadrado] (g10_3) [below right = 0.6cm of g10_1] {$u_0 \_ u_0^,$};
\node[circulo] (g10_4) [below = 1.2cm of g10_1] {$u_0^,$};
\node[cuadrado] (g10_5) [below left = 0.6cm of g10_4] {$u_0^,$};

%%%
\node[elipse, align=center] (g5_1) [below = 2cm of g3_1] {$C_1$ \\ $\thinspace x_1 \vee\neg x_n\vee y_1$};

\node[elipse2, align=center] (g5_1) [below = 3.5cm of g3_1] {$C_1$ \\ $\thinspace x_1 \vee\neg x_n\vee y_1$};

\path   
% G1
    (g1_2) 
        edge [below] node {k} (g1_1)
        edge [left, pos=0.3] node {n} (g1_4)
        edge [left, pos=0.5] node {1} (g1_8)
        edge [bend left, left, pos=0.5] node {1} (g1_10)
    (g1_3) 
        edge [below] node {k} (g1_1)
        edge [right, pos=0.3] node {n} (g1_6)
        edge [right, pos=0.5] node {1} (g1_9)
        edge [bend right, right, pos=0.5] node {1} (g1_11)
% G3
    (g3_2) 
        edge [below] node {k+1} (g3_1)
        edge [left, pos=0.3] node {n-1} (g3_4)
        edge [left, pos=0.2] node {1} (g3_5)
        edge [left, pos=0.5] node {1} (g3_8)
        edge [bend left, left, pos=0.5] node {1} (g3_10)
    (g3_3) 
        edge [below] node {k+1} (g3_1)
        edge [right, pos=0.3] node {n-1} (g3_6)
        edge [right, pos=0.2] node {1} (g3_7)
        edge [right, pos=0.5] node {1} (g3_9)
        edge [bend right, right, pos=0.5] node {1} (g3_11)
% G10
    (g10_1) 
        edge [above  left, pos=0.5] node {k+1} (g10_2)
        edge [above  right, pos=0.5] node {n} (g10_3)
    (g10_4) 
        edge [below right, pos=0.5] node {n+2} (g10_3)
        edge [below right, pos=0.5] node {k} (g10_5);

\draw[flecha] (g3_5) -- ++(-1,-1) |- (g10_1);
\draw[flecha] (g3_7) -- ++(1,-1) |- (g10_1);

\end{tikzpicture}
\end{document}

Answer 1