// cartesian coordinates plotting area // define the area #proc areadef xrange: -10 10 yrange: -10 10 // do the blue grid.. #proc xaxis ticincrement: 1 grid: color=gray(0.8) ticlen: 0 #proc yaxis ticincrement: 1 grid: color=gray(0.8) ticlen: 0 // do the axes.. #proc xaxis location: 0(s) stubs: inc stubomit: 0 #proc yaxis location: 0(s) stubs: inc stubomit: 0