;*************************************************
; resize_4.ncl
;************************************************
load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_code.ncl"   
load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_csm.ncl"    
;************************************************
begin
;************************************************
; read in netCDF file
;************************************************
  a = addfile("uv300.nc","r")
  u = a->U(1,:,:)                                ; read July zonal winds
  v = a->V(1,:,:)
;************************************************
; create plots
;************************************************
  wks = gsn_open_wks("ps","resize")                 ; open a ps file
  gsn_define_colormap(wks,"BlAqGrYeOrReVi200")      ; choose colormap
  
  res                     = True
  res@cnFillOn            = True            ; turn on color
  res@gsnSpreadColors     = True            ; spread out color table
  res@cnLinesOn           = False           ; turn off contour lines
  
; to have a common label bar, both plots should be set to the same interval
; b/c the label bar is drawn by default from the interval of the first plot.
  res@cnLevelSelectionMode =  "ManualLevels"   
  res@cnMinLevelValF       = -10.
  res@cnMaxLevelValF       =  45.
  res@cnLevelSpacingF      =   5.
  
; allow ncl to choose landcape or portrait. You can also force by 
; setting to "landscape" or "portrait".
  
  res@gsnPaperOrientation = "auto"          
  res@gsnMaximize         = True        ; must include w/ Paper Orientation
  
  plot  = gsn_csm_contour_map_ce(wks,u,res) 
  
end