;*************************************************
; conLab_3.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")
;************************************************
; read in zonal winds
;************************************************
  u = a->U(1,:,:)                                
;************************************************
; create default plot
;************************************************
  wks  = gsn_open_wks("ps","conLab")             ; open a ps file
  gsn_define_colormap(wks,"gui_default")         ; choose colormap

  res  = True

  res@cnFillOn                   = True          ; turn on color
  res@gsnSpreadColors            = True          ; use full range of colormap
  res@mpMinLatF                  = -30           ; zoom map
  res@mpMaxLatF                  =  30
  res@mpMinLonF                  = 0
  res@mpMaxLonF                  = 70

  res@cnLineLabelsOn             = True          ; turn on line labels

  res@cnLineLabelBackgroundColor = "white"       ; white bckgrnd around label
  plot = gsn_csm_contour_map_ce(wks,u,res)       ; create a cylindrical equidistant plot


end