我想用与路径平行的小箭头（长度可定义）装饰路径。我尝试修改手册中的一个示例，但我只能获得箭头尖，而无法获得可以调整长度的完整箭头。那么有办法吗？
以下是我尝试过的：
\documentclass{article}
\usepackage{tikz}
\usetikzlibrary{decorations.markings}
\begin{document}
\begin{tikzpicture}[decoration={
markings,
mark=between positions 0 and 1 step 9.5mm with {\arrow{latex}},raise=0.1cm}
]
\draw [help lines] grid (3,2);
\draw [postaction={decorate}] (0,0) -- (3,1) arc (0:180:1.5 and 1);
\end{tikzpicture}
\end{document}
答案1
您可以使用选项\draw中的任何命令with：
\documentclass{article}
\usepackage{tikz}
\usetikzlibrary{decorations.markings}
\begin{document}
\begin{tikzpicture}[decoration={
markings,
mark=between positions 0 and 1 step 9.5mm with {\draw [-latex] (-0.2,0) -- (0.2,0);},raise=0.1cm}
]
\draw [help lines] grid (3,2);
\draw [postaction={decorate}] (0,0) -- (3,1) arc (0:180:1.5 and 1);
\end{tikzpicture}
\end{document}