mask grid line

From: Mark Chan <cym263_at_nyahnyahspammersnyahnyah>
Date: Sat Mar 26 2011 - 19:43:24 MDT

NCL users,

Below is an NCL script. Could one please help to modify it, so the "grid line"
only covers the area outside of the state? (i.e. mask out the grid line in state
area)

Thanks a lot.
Mark

;-------------------------ncl script----------------------------------------
load "$NCARG_ROOT/lib/ncarg/nclex/gsun/gsn_code.ncl"
load "$NCARG_ROOT/lib/ncarg/nclex/gsun/gsn_csm.ncl"

   wks = gsn_open_wks("x11","grid_line_test")
   res = True
   res@pmTickMarkDisplayMode = "Always"

begin
 res@mpMinLonF = -103.5
 res@mpMaxLonF = -94.
 res@mpMinLatF = 33.
 res@mpMaxLatF = 38.

   res@mpOutlineOn = True
   res@mpOutlineBoundarySets = "GeophysicalAndUSStates"
   res@mpGeophysicalLineThicknessF = 1.5
   res@mpUSStateLineThicknessF=1.5
   res@mpDataBaseVersion = "Ncarg4_1"
   res@mpDataSetName = "Earth..2"
   res@mpOutlineSpecifiers = (/"Land","Oklahoma:counties","water"/)
   res@mpUSStateLineColor = "Blue"
   res@mpNationalLineColor = "brown"
   res@mpGeophysicalLineColor= "Blue"

;--- for grid line -----------
 res@mpGridAndLimbOn = True
 res@mpGridLineDashPattern = 2
 res@mpGridLineDashSegLenF = 0.09
 res@mpGridSpacingF = 1.0
; res@mpGridMaskMode = "MaskLand" ; Mask grid lines over land.

   plot = gsn_csm_map_ce(wks,res)
end

      
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Received on Sat Mar 26 19:43:29 2011

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