\documentclass[pstricks,border=12pt]{standalone}
\usepackage{pst-plot}
\begin{document}
\begin{pspicture}(-4,-4)(4,4)
\psgrid[style=gridstyle](-4,-4)(4,4)
\pnode(1,2){A}
\rput{45}(A){\psaxes{->}(0,0)(-1,-1)(1,1)[$x$,0][$y$,90]}
\qdisk(A){2pt}
\end{pspicture}
\end{document}