\documentclass[12pt]{article} \usepackage{pstricks} \usepackage{pst-vue3d} \SpecialCoor \makeatletter % \makeatother \begin{document} \psset{unit=3} \begin{pspicture}(-1.5,-0.75)(2.5,2.25) \AxesThreeD(20) \pNodeThreeD(15,18,15){P}% cartesian \uput[0](P){P} \psset{linecolor=red} \qdisk(P){3pt} \showCoorThreeD[linecolor=red](15,18,15) \psset{linecolor=blue} \pNodeThreeD(20;60;40){Q}% spherical \uput[0](Q){Q} \qdisk(Q){3pt} \showCoorThreeD[linecolor=blue](20;60;40) \end{pspicture} \end{document}