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

begin
  arr = random_uniform(-4.,4.,56)
	
  wks = gsn_open_wks("ps","tm")
  gsn_define_colormap(wks,"gsdtol")

  res = True

;	The following vp resources set the boundaries of the xy plot
;	in ndc grid space (0.->1.)
  res@vpWidthF = 0.8		; set width of plot 
  res@vpHeightF = 0.3		; set height of plot
  res@vpXF = 0.1		; set left hand side start point of plot
				; as vpWidthF = .8, plot will occupy .1->.9 in NDC coords.
  res@vpYF = 0.8		; set top start point of plot
				; as vpHeightF = .3, plot will occupy .5->.8 in NDC coords.
  res@trYMinF = -4.5		; set minimum Y-axis value
  res@trYMaxF =  4.5		; set maximum Y-axis value
  res@trXMinF = 1949		; set minimum X-axis value
  res@trXMaxF = 2006		; set maximum X-axis value

  plot = gsn_csm_xy(wks,ispan(1950,2005,1),arr,res)
end