Can you help a little more?
\documentclass[12pt]{article} \usepackage{pgf} \usepackage{tikz} \usetikzlibrary{arrows,automata} \usepackage{pgfplots} \usepackage{pstricks,pst-plot} \begin{document} \begin{figure}[htb] \begin{centering} \begin{pspicture} \psaxes[ticks=none,xunit=.5cm] (0,0)(0,10)(30,0) \psdots[dotstyle=Oplus,dotsize=10pt] (1,1)(2,2)(-1,3)(-3,5) \psline {->}(1,1)(13,1) \psline(15,0)(15,10) \psline {->}(2,2)(16,2) \psline{->}(-1,3)(8,3) \psline{->}(-3,5)(17,5) \end{pspicture} \end{centering} \caption{censoring observed} \end{figure}