load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_code.ncl"
load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_csm.ncl"

begin
  z = generate_2d_array(15,15,-10.,110.,0,(/40,40/))

  wks = gsn_open_wks("x11","contour_ex")    ; Open X11 window

  res = True                                ; Plot options desired

  res@gsnMaximize      = True               ; Maximize plot in frame

  plot = gsn_csm_contour(wks,z,res)
end