我有以下代码：
\documentclass[border=2mm]{standalone}
\usepackage{tikz}
\usetikzlibrary{shapes.misc}
\usetikzlibrary{calc}
\tikzset{cross/.style={cross out, draw=black,ultra thick, minimum size=3*(#1-\pgflinewidth), inner sep=0pt, outer sep=0pt},
%default radius will be 1pt.
cross/.default={3pt}}
\usetikzlibrary{decorations.pathreplacing}
\tikzset{
ncbar angle/.initial=90,
ncbar/.style={
to path=(\tikztostart)
-- ($(\tikztostart)!#1!\pgfkeysvalueof{/tikz/ncbar angle}:(\tikztotarget)$)
-- ($(\tikztotarget)!($(\tikztostart)!#1!\pgfkeysvalueof{/tikz/ncbar angle}:(\tikztotarget)$)!\pgfkeysvalueof{/tikz/ncbar angle}:(\tikztostart)$)
-- (\tikztotarget)
},
ncbar/.default=0.5cm,
}
\tikzset{square right brace/.style={ncbar=-0.5cm}}
\begin{document}
\begin{tikzpicture}
%[scale=1,auto=left,thick,every node/.style={circle,fill=green!50}]
\node (n_s1) at (0,6) [draw=red,scale=1,thick,circle,fill=gray!50] {$\mathbf{S}$};
\node (n_t1) at (0,0) [draw=red,scale=1,thick,circle,fill=gray!50] {$\mathbf{T}$};
\node (n1) at (0,3) [draw=red,scale=0.7,thick,circle,fill=green] {$x_a$};
\draw[-latex,shorten >=5pt,shorten <=5pt] (n_s1)--(n1) node [pos=0.5,left,font=\footnotesize] {$\theta_{a;0}$};
\draw[-latex,shorten >=5pt,shorten <=5pt] (n1)--(n_t1) node [pos=0.5,left,font=\footnotesize] {$\theta_{a;1}$};
\draw (1.5,3) node[cross=4,rotate=45]{};
\node (n_s2) at (3,6) [draw=red,scale=1,thick,circle,fill=gray!50] {$\mathbf{S}$};
\node (n_t2) at (3,0) [draw=red,scale=1,thick,circle,fill=gray!50] {$\mathbf{T}$};
\node (n2) at (3,3) [draw=red,scale=0.7,thick,circle,fill=green] {$x_b$};
\draw[-latex,shorten >=5pt,shorten <=5pt] (n_s2)--(n2) node [pos=0.5,left,font=\footnotesize] {$\theta_{b;0}$};
\draw[-latex,shorten >=5pt,shorten <=5pt] (n2)--(n_t2) node [pos=0.5,left,font=\footnotesize] {$\theta_{b;1}$};
\draw (4.5,3) node[cross=4,rotate=45]{};
\node (n_s3) at (7.5,6) [draw=red,scale=1,thick,circle,fill=gray!50] {$\mathbf{S}$};
\node (n_t3) at (7.5,0) [draw=red,scale=1,thick,circle,fill=gray!50] {$\mathbf{T}$};
\node (n31) at (6,3) [draw=red,scale=0.7,thick,circle,fill=green] {$x_a$};
\node (n32) at (9,3) [draw=red,scale=0.7,thick,circle,fill=green] {$x_b$};
\draw[-latex,shorten >=5pt,shorten <=5pt] (n_s3)--(n31) node [pos=0.5,left,font=\footnotesize] {$\theta_{b;0}$};
\draw[-latex,shorten >=5pt,shorten <=5pt] (n32)--(n_t3) node [pos=0.5,right,font=\footnotesize] {$\theta_{b;1}$};
\draw[-latex,shorten >=5pt,shorten <=5pt] (n31.10)--(n31.10-|n32.west) node [pos=0.5,above,font=\footnotesize] {$\theta_{ab;10}$};
\draw[-latex,shorten >=5pt,shorten <=5pt] (n32.-170)--(n32.-170-|n31.east) node [pos=0.5,below,font=\footnotesize]
{$\theta_{ab;01} - \theta_{ab;00} - \theta_{ab;11}$};
\draw [black, ultra thick] (9.5,0) to [square right brace] (9.5,6);
\node (n_s4) at (13.5,6) [draw=red,scale=1,thick,circle,fill=gray!50] {$\mathbf{S}$};
\node (n_t4) at (13.5,0) [draw=red,scale=1,thick,circle,fill=gray!50] {$\mathbf{T}$};
\node (n41) at (12,3) [draw=red,scale=0.7,thick,circle,fill=green] {$x_a$};
\node (n42) at (15,3) [draw=red,scale=0.7,thick,circle,fill=green] {$x_b$};
\draw[-latex,shorten >=5pt,shorten <=5pt] (n_s4)--(n41) node [pos=0.5,left,font=\footnotesize] {$w_1$};
\draw[-latex,shorten >=5pt,shorten <=5pt] (n_s4)--(n42) node [pos=0.5,right,font=\footnotesize] {$w_3$};
\draw[-latex,shorten >=5pt,shorten <=5pt] (n41)--(n_t4) node [pos=0.5,left,font=\footnotesize] {$w_2$};
\draw[-latex,shorten >=5pt,shorten <=5pt] (n42)--(n_t4) node [pos=0.5,right,font=\footnotesize] {$w_4$};
\draw[-latex,shorten >=5pt,shorten <=5pt] (n41.10)--(n41.10-|n42.west) node [pos=0.5,above,font=\footnotesize] {$w_5$};
\draw[-latex,shorten >=5pt,shorten <=5pt] (n42.-170)--(n42.-170-|n41.east) node [pos=0.5,below,font=\footnotesize] {$w_6$};
\draw[ultra thick,->,shorten >=20pt,shorten <=21pt] (n32)--(n41);
\end{tikzpicture}
\end{document}
我想将其分成$\theta_{ab;01} - \theta_{ab;00} - \theta_{ab;11}$两行，这样就$- \theta_{ab;11}$在下面$- \theta_{ab;00}$
答案1
像这样 ？
\documentclass[border=2mm]{standalone}
\usepackage{tikz,mathtools}
\usetikzlibrary{shapes.misc}
\usetikzlibrary{calc}
\tikzset{cross/.style={cross out, draw=black,ultra thick, minimum size=3*(#1-\pgflinewidth), inner sep=0pt, outer sep=0pt},
%default radius will be 1pt.
cross/.default={3pt}}
\usetikzlibrary{decorations.pathreplacing}
\tikzset{
ncbar angle/.initial=90,
ncbar/.style={
to path=(\tikztostart)
-- ($(\tikztostart)!#1!\pgfkeysvalueof{/tikz/ncbar angle}:(\tikztotarget)$)
-- ($(\tikztotarget)!($(\tikztostart)!#1!\pgfkeysvalueof{/tikz/ncbar angle}:(\tikztotarget)$)!\pgfkeysvalueof{/tikz/ncbar angle}:(\tikztostart)$)
-- (\tikztotarget)
},
ncbar/.default=0.5cm,
}
\tikzset{square right brace/.style={ncbar=-0.5cm}}
\begin{document}
\begin{tikzpicture}
%[scale=1,auto=left,thick,every node/.style={circle,fill=green!50}]
\node (n_s1) at (0,6) [draw=red,scale=1,thick,circle,fill=gray!50] {$\mathbf{S}$};
\node (n_t1) at (0,0) [draw=red,scale=1,thick,circle,fill=gray!50] {$\mathbf{T}$};
\node (n1) at (0,3) [draw=red,scale=0.7,thick,circle,fill=green] {$x_a$};
\draw[-latex,shorten >=5pt,shorten <=5pt] (n_s1)--(n1) node [pos=0.5,left,font=\footnotesize] {$\theta_{a;0}$};
\draw[-latex,shorten >=5pt,shorten <=5pt] (n1)--(n_t1) node [pos=0.5,left,font=\footnotesize] {$\theta_{a;1}$};
\draw (1.5,3) node[cross=4,rotate=45]{};
\node (n_s2) at (3,6) [draw=red,scale=1,thick,circle,fill=gray!50] {$\mathbf{S}$};
\node (n_t2) at (3,0) [draw=red,scale=1,thick,circle,fill=gray!50] {$\mathbf{T}$};
\node (n2) at (3,3) [draw=red,scale=0.7,thick,circle,fill=green] {$x_b$};
\draw[-latex,shorten >=5pt,shorten <=5pt] (n_s2)--(n2) node [pos=0.5,left,font=\footnotesize] {$\theta_{b;0}$};
\draw[-latex,shorten >=5pt,shorten <=5pt] (n2)--(n_t2) node [pos=0.5,left,font=\footnotesize] {$\theta_{b;1}$};
\draw (4.5,3) node[cross=4,rotate=45]{};
\node (n_s3) at (7.5,6) [draw=red,scale=1,thick,circle,fill=gray!50] {$\mathbf{S}$};
\node (n_t3) at (7.5,0) [draw=red,scale=1,thick,circle,fill=gray!50] {$\mathbf{T}$};
\node (n31) at (6,3) [draw=red,scale=0.7,thick,circle,fill=green] {$x_a$};
\node (n32) at (9,3) [draw=red,scale=0.7,thick,circle,fill=green] {$x_b$};
\draw[-latex,shorten >=5pt,shorten <=5pt] (n_s3)--(n31) node [pos=0.5,left,font=\footnotesize] {$\theta_{b;0}$};
\draw[-latex,shorten >=5pt,shorten <=5pt] (n32)--(n_t3) node [pos=0.5,right,font=\footnotesize] {$\theta_{b;1}$};
\draw[-latex,shorten >=5pt,shorten <=5pt] (n31.10)--(n31.10-|n32.west) node [pos=0.5,above,font=\footnotesize] {$\theta_{ab;10}$};
\draw[-latex,shorten >=5pt,shorten <=5pt] (n32.-170)--(n32.-170-|n31.east) node [pos=0.5,below,font=\footnotesize]
{$\begin{aligned}
\theta_{ab;01} &- \theta_{ab;00}\\
&- \theta_{ab;11}
\end{aligned}$};
\draw [black, ultra thick] (9.5,0) to [square right brace] (9.5,6);
\node (n_s4) at (13.5,6) [draw=red,scale=1,thick,circle,fill=gray!50] {$\mathbf{S}$};
\node (n_t4) at (13.5,0) [draw=red,scale=1,thick,circle,fill=gray!50] {$\mathbf{T}$};
\node (n41) at (12,3) [draw=red,scale=0.7,thick,circle,fill=green] {$x_a$};
\node (n42) at (15,3) [draw=red,scale=0.7,thick,circle,fill=green] {$x_b$};
\draw[-latex,shorten >=5pt,shorten <=5pt] (n_s4)--(n41) node [pos=0.5,left,font=\footnotesize] {$w_1$};
\draw[-latex,shorten >=5pt,shorten <=5pt] (n_s4)--(n42) node [pos=0.5,right,font=\footnotesize] {$w_3$};
\draw[-latex,shorten >=5pt,shorten <=5pt] (n41)--(n_t4) node [pos=0.5,left,font=\footnotesize] {$w_2$};
\draw[-latex,shorten >=5pt,shorten <=5pt] (n42)--(n_t4) node [pos=0.5,right,font=\footnotesize] {$w_4$};
\draw[-latex,shorten >=5pt,shorten <=5pt] (n41.10)--(n41.10-|n42.west) node [pos=0.5,above,font=\footnotesize] {$w_5$};
\draw[-latex,shorten >=5pt,shorten <=5pt] (n42.-170)--(n42.-170-|n41.east) node [pos=0.5,below,font=\footnotesize] {$w_6$};
\draw[ultra thick,->,shorten >=20pt,shorten <=21pt] (n32)--(n41);
\end{tikzpicture}
\end{document}
