;================================================;
;  maponly_3.ncl
;================================================;
;
; Concepts illustrated:
;   - Changing the color of the oceans, land, and inland water areas
;
load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_code.ncl"   
load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_csm.ncl"   
; ================================================;
begin

  wks  = gsn_open_wks("ps","maponly")       ; open a ps file
  gsn_define_colormap(wks,"wh-bl-gr-ye-re") ; choose a colormap

  res                        = True         ; mods desdired
  res@mpOceanFillColor       = 5            ; array index in color map
  res@mpLandFillColor        = 164          ; for land, ocean, and inland h20
  res@mpInlandWaterFillColor = 54
 
  res@mpMinLonF              =   0
  res@mpMaxLonF              = 360
  res@mpCenterLonF           = 180     ; This is necessary to get the correct map
 
  plot = gsn_csm_map_ce(wks,res)        ; draw global map

  end