答案1
对我对您另一个问题的回答稍作修改,得到一个pstricks
解决方案:
\documentclass{article}
\usepackage{pst-node}%
\begin{document}
\begin{pspicture}
\sffamily
\psset{arrows=->, arrowinset=0.12, shortput=nab}
\begin{psmatrix}[mnode = f, framesize=3.5 1.25, colsep=1cm, rowsep=1cm]
& [mnode=dia, name=D1]{\parbox[t][1.4cm]{1.4cm}{\mbox{}}}& [framesize=3.5 1.8, name=F3]\\
& [name=F1]\\
[name=E, mnode=p] & [mnode=dia, name=D2]{\parbox[t][1cm]{1cm}{\mbox{}}}\\
& [name=F2]
\end{psmatrix}
\psset{arm=1cm, angle=90}
\ncline{D1}{F1}^{Yes}\ncline{D1}{F3}^{No}\ncbar{F3}{D1}
\ncline{F1}{D2}
\ncline{D2}{F2}^{Yes}\ncline{D2}{E}_{No}
\ncangle[angleA=180, angleB=-90, arrows=-]{F2}{E}\ncangle{E}{D1}
\end{pspicture}
\end{document}