Ploting a rectangle on a map

Dear NCL users,

I am trying to add rectagle on a map.

There is way to modify the following NCL example to perform it?

To add for exemple a rectangle bounded by coordinates

(-50°, 0°) Longitude and (-25°, 25°) latitude.

;================================================;
; maponly_3.ncl
;================================================;
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_at_mpOceanFillColor = 5 ; array index in color map
  res_at_mpLandFillColor = 164 ; for land, ocean, and inland h20
  res_at_mpInlandWaterFillColor = 54

  plot = gsn_csm_map_ce(wks,res) ; draw global map

  end

Thanks

             
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Received on Wed Dec 12 2007 - 09:31:15 MST