;================================================;
;  mptick_5.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","mptick")      ; open a ps file

  res                      = True          ; plot mods desired
  res@tmXBLabelFontHeightF = 0.019         ; change maj lat tm spacing
  res@tmXBMajorLengthF     = 0.02          ; change the tickmark length
  res@mpGridAndLimbOn      = True          ; default is every 15 deg
  res@mpGridSpacingF       = 30            ; change to match labels
  plot = gsn_csm_map_ce(wks,res)           ; draw global map
end