\pspicture(4,3) \psset{xunit=.2cm,yunit=1.5cm} \savedata{\mydata}[ {{0, 0}, {1., 0.946083}, {3., 1.84865}, {5., 1.54993}, {7., 1.4546}, {9., 1.66504}, {11., 1.57831}, {13., 1.49936}, {15., 1.61819}, {17., 1.59014}, {19., 1.51863}}] \dataplot[plotstyle=curve,showpoints,dotstyle=x, linecolor=black]{\mydata} \psline{<->}(0,2)(0,0)(20,0) \endpspicture