無法使用 \foreach 和 \pic 產生的本機邊界框

Question

我遇到了\pic和的\foreach問題Tikz。下面是一個 MWE：

\documentclass[tikz]{standalone}
\tikzset{%
 pics/abc/.style={%
 code={
 \node {this is some path};
 }
 }
}
\begin{document}
\begin{tikzpicture}
%local bounding box failed
\foreach \i in {1,2} \pic[local bounding box=\i] at (0,\i) {abc};
\draw(1)circle(1);

%local bounding box successful
\pic[local bounding box=3] at (10,4) {abc};
\draw(3)circle(1);

\end{tikzpicture}
\end{document} 

當我使用and生成local bounding box(1) 和 (2)時，會導致錯誤。但是當我直接使用without生成(3)時，就可以了。非常感謝您的幫忙！\foreach\pic\draw(1)circle(1);local bounding box\pic\foreach\draw(3)circle(1);

Answer 1

您需要大括號並且可能想要新增/.expanded按鍵。我做了一些額外的更改來“現代化”您的程式碼。

\documentclass[tikz]{standalone}
\tikzset{%
 pics/abc/.style={%
 code={
 \node {this is some path};
 }
 }
}
\begin{document}
\begin{tikzpicture}
%local bounding box failed
\path foreach \i in {1,2} {(0,\i) pic[local bounding box/.expanded=\i]  {abc}};
\draw (1) circle [radius=1];

%local bounding box successful
\pic[local bounding box=3] at (10,4) {abc};
\draw(3)circle[radius=1];

\end{tikzpicture}
\end{document}