带有标记节点的水平 tikz 链未对齐。

Question

即使没有标签，链条似乎也能正确对齐；但添加标签似乎会破坏它：

\documentclass{standalone}
\usepackage{tikz}
\usetikzlibrary{chains}
\begin{document}
  \begin{tikzpicture}[start chain = going right, node distance=0, every node/.style={on chain,minimum width=10ex,draw}]
    \node [label=above:{a}] {1};
    \node [label=above:{b}] {2};
    \node [label=above:{c}] {3};
    \node [label=above:{d}] {4};
    \node {5};
    \node {6};
    \node {7};
    \node {8};
  \end{tikzpicture}
\end{document}

Answer 1

正如 @percusse 所说，标签也是节点，因此every node样式也适用于这些节点。要对齐“普通”节点，请定义新样式。

\documentclass{standalone}
\usepackage{tikz}
\usetikzlibrary{chains}
\begin{document}
  \begin{tikzpicture}[start chain = going right, node distance=0, chain/.style={on chain,minimum width=10ex,draw}]
    \node [label=above:{a},chain] {1};
    \node [label=above:{b},chain] {2};
    \node [label=above:{c},chain] {3};
    \node [label=above:{d},chain] {4};
    \node [chain] {5};
    \node [chain] {6};
    \node [chain] {7};
    \node [chain] {8};
  \end{tikzpicture}
\end{document}