我想让所有节点都大小相同。但问题是其中一些节点包含更多文本，因此它们会自动变大。任何帮助都将不胜感激。
代码
\begin{tikzpicture}
[scale=.5,auto=left,every node/.style={circle,inner sep=0pt, fill=blue!20}]
\node (n1) at (-5,1) {$v_{1}$};
\node (n2) at (-5,6) {$v_{i}$};
\node (n3) at (-5,11) {$v_{n}$};
\node (n4) at (1,-5) {$u_{1}$};
\node (n5) at (6,-5) {$u_{j}$};
\node (n6) at (11,-5) {$u_{n}$};
\node (n7) at (1,1) {$(u_{1},v_{1})$};
\node (n8) at (1,6) {$(u_{1},v_{i})$};
\node (n9) at (1,11) {$(u_{1},v_{n})$};
\node (n10) at (6,1) {$(u_{j},v_{1})$};
\node (n11) at (6,6) {$(u_{j},v_{i})$};
\node (n12) at (6,11) {$(u_{j},v_{n})$};
\node (n13) at (11,1) {$(u_{m},v_{1})$};
\node (n14) at (11,6) {$(u_{m},v_{i})$};
\node (n15) at (11,11) {$(u_{m},v_{n})$};
\foreach \from/\to in {n2/n3,n1/n2,n4/n5,n5/n6,n7/n8,n8/n9,n10/n11,n11/n12,n13/n14,n14/n15,n9/n12,n12/n15,n8/n11,n11/n14,n7/n10,n10/n13}
\draw[loosely dotted] (\from) -- (\to);
\path [every node/.style={font=\scriptsize, inner sep=+.1667em}]
(n1) edge [bend left] node[swap] {} (n3)
(n4) edge [bend right] node[swap] {} (n6)
(n9) edge [bend right] node[swap] {$a$} (n7)
(n7) edge [bend right] node[swap] {$b$} (n13) (n13) edge [bend right] node[swap] {$c$} (n15)
(n15) edge [bend right] node[swap] {$d$} (n9);
\end{tikzpicture}
答案1
您可以设置一个minimum size值：
\documentclass{article}
\usepackage{tikz}
\begin{document}
\begin{tikzpicture}
[scale=.5,auto=left,every node/.style={circle,inner sep=0pt, fill=blue!20,minimum size=39pt}]
\node (n1) at (-5,1) {$v_{1}$};
\node (n2) at (-5,6) {$v_{i}$};
\node (n3) at (-5,11) {$v_{n}$};
\node (n4) at (1,-5) {$u_{1}$};
\node (n5) at (6,-5) {$u_{j}$};
\node (n6) at (11,-5) {$u_{n}$};
\node (n7) at (1,1) {$(u_{1},v_{1})$};
\node (n8) at (1,6) {$(u_{1},v_{i})$};
\node (n9) at (1,11) {$(u_{1},v_{n})$};
\node (n10) at (6,1) {$(u_{j},v_{1})$};
\node (n11) at (6,6) {$(u_{j},v_{i})$};
\node (n12) at (6,11) {$(u_{j},v_{n})$};
\node (n13) at (11,1) {$(u_{m},v_{1})$};
\node (n14) at (11,6) {$(u_{m},v_{i})$};
\node (n15) at (11,11) {$(u_{m},v_{n})$};
\foreach \from/\to in {n2/n3,n1/n2,n4/n5,n5/n6,n7/n8,n8/n9,n10/n11,n11/n12,n13/n14,n14/n15,n9/n12,n12/n15,n8/n11,n11/n14,n7/n10,n10/n13}
\draw[loosely dotted] (\from) -- (\to);
\path [every node/.style={font=\scriptsize, inner sep=+.1667em}]
(n1) edge [bend left] node[swap] {} (n3)
(n4) edge [bend right] node[swap] {} (n6)
(n9) edge [bend right] node[swap] {$a$} (n7)
(n7) edge [bend right] node[swap] {$b$} (n13) (n13) edge [bend right] node[swap] {$c$} (n15)
(n15) edge [bend right] node[swap] {$d$} (n9);
\end{tikzpicture}
\end{document}
positioning也许您会对帮助您放置没有明确坐标的节点的库感兴趣。
带有库的代码positioning：
\documentclass{article}
\usepackage{tikz}
\usetikzlibrary{positioning}
\begin{document}
\begin{tikzpicture}
[scale=.5,auto=left,every node/.style={circle,inner sep=0pt, fill=blue!20,minimum size=38pt},node distance=1.35cm and 1.35cm]
\node (n7) at (1,1) {$(u_{1},v_{1})$};
\node[above=of n7] (n8) {$(u_{1},v_{i})$};
\node[above=of n8] (n9) {$(u_{1},v_{n})$};
\node[right=of n7] (n10) {$(u_{j},v_{1})$};
\node[above=of n10] (n11) {$(u_{j},v_{i})$};
\node[above=of n11] (n12) {$(u_{j},v_{n})$};
\node[right=of n10] (n13) {$(u_{m},v_{1})$};
\node[above=of n13] (n14) {$(u_{m},v_{i})$};
\node[above=of n14] (n15) {$(u_{m},v_{n})$};
\node[left=of n7] (n1) {$v_{1}$};
\node[above=of n1] (n2) {$v_{i}$};
\node[above=of n2] (n3) {$v_{n}$};
\node[below=of n7] (n4) {$u_{1}$};
\node[right=of n4] (n5) {$u_{j}$};
\node[right=of n5] (n6) {$u_{n}$};
\foreach \from/\to in {n2/n3,n1/n2,n4/n5,n5/n6,n7/n8,n8/n9,n10/n11,n11/n12,n13/n14,n14/n15,n9/n12,n12/n15,n8/n11,n11/n14,n7/n10,n10/n13}
\draw[loosely dotted] (\from) -- (\to);
\path [every node/.style={font=\scriptsize, inner sep=+.1667em}]
(n1) edge [bend left] node[swap] {} (n3)
(n4) edge [bend right] node[swap] {} (n6)
(n9) edge [bend right] node[swap] {$a$} (n7)
(n7) edge [bend right] node[swap] {$b$} (n13) (n13) edge [bend right] node[swap] {$c$} (n15)
(n15) edge [bend right] node[swap] {$d$} (n9);
\end{tikzpicture}
\end{document}