将文本沿边缘对齐

Question

我不明白为什么边缘上的文本没有输入。我做错了什么？

\documentclass[margin=1mm]{standalone}


\usepackage{tikz}
\usetikzlibrary{positioning}

\begin{document}

\begin{tikzpicture}
\node[rectangle,draw,minimum width=1cm, minimum height=1cm] (r1) {};;

\node[rectangle,draw,minimum width=1cm, minimum height=1cm, right=3cm of r1] (r2) {} edge[<-,thick] node[above,text width=1.5cm, align=center] {Asynchronous\\[-3pt]replication} (r1);
\end{tikzpicture}

\end{document}

Answer 1

删除text width设置：

\documentclass[margin=1mm]{standalone}


\usepackage{tikz}
\usetikzlibrary{positioning}

\begin{document}

\begin{tikzpicture}
\node[rectangle,draw,minimum width=1cm, minimum height=1cm] (r1) {};;

\node[rectangle,draw,minimum width=1cm, minimum height=1cm, right=3cm of r1] (r2) {} edge[<-,thick] node[above, align=center] {Asynchronous\\[-3pt]replication} (r1);
\end{tikzpicture}

\end{document}

1.5 厘米的文本宽度小于以下宽度：