\documentclass{article} \usepackage{pstricks} \usepackage{pst-eps} \begin{document} \TeXtoEPS \psset{unit=0.1mm} \begin{pspicture}(0,0)(600,350) \pspolygon(0,0)(300,0)(300,350)(0,350) \multirput{0}(150,280)(0,20){3}{\ldots} \multirput{0}(80,80)(0,60){3}{ \pspolygon(0,0)(140,0)(140,40)(0,40) \psline(120,0)(120,40) } \rput[l]{0}(150,40){$\vdots$} \rput[l]{0}(90,100){$\cdots$} \rput[l]{0}(90,160){unit 2} \rput[l]{0}(90,220){unit 1} \rput{90}(520,200){ \multirput{0}(0,0)(0,40){3}{ \pspolygon(0,0)(120,0)(120,40)(0,40) } \rput{0}(60,100){map$_1$} \rput{0}(60,60){map$_2$} \rput{0}(60,20){\ldots} \rput{0}(60,-20){$\vdots$} } \pscurve[arrows=->](220,220)(260,220)(320,260)(400,260) \rput{90}(520,60){ \multirput{0}(0,0)(0,40){3}{ \pspolygon(0,0)(120,0)(120,40)(0,40) } \rput{0}(60,100){map$_1$} \rput{0}(60,60){map$_2$} \rput{0}(60,20){\ldots} \rput{0}(60,-20){$\vdots$} } \pscurve[arrows=->](220,160)(260,140)(320,120)(400,120) \end{pspicture} \endTeXtoEPS \end{document}