min_limit_x: 0max_limit_x: 50npoints_x: 5min_limit_y: 0max_limit_y: 50npoints_y: 5values:   10,20   7.5,20   5,20   2.5,20   0,20      10,15   7.5,15   5,15   2.5,15   0,15      10,10   7.5,10   5,10   2.5,10   0,10      10,5   7.5,5   5,5   2.5,5   0,5      10,0   7.5,0   5,0   2.5,0   0,0