set parametric
set nohidden3d  

set surface
set nocontour
set key 
#
splot 'gnuxy.out' u 1:2:3 w l
#
pause -1 "Press return"

set autoscale
set hidden3d
set view 50,170
#
splot 'gnuxy.out' u 1:2:3 w l
#
pause -1 "Press return"
#
set contour
set cntrparam levels auto 50
set nosurface
set nogrid
set nokey
set noxtics
set noytics
set noztics

set view 0,0,1
replot
pause -1 "Press return"

#gnuplot < gnu2d
