[ncl-talk] gsnShadeFillType not valid

[WIND]

Hi all,
I'm trying to draw the trend and its significance level above 95%, the data has been stored in jantest.nc. But it always warning 
gsnShadeFillType is not a valid resource in re_contour at this time
gsnShadeHigh is not a valid resource in re_contour at this time
I have referred to this: http://www.ncl.ucar.edu/Applications/Scripts/coneff_7.ncl
so I just don't know why and how to solve this problem. 
It's very appreciate if you could help me find a way to sove the problem. Thanks a lot!


Here is my script.


load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_code.ncl"
load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_csm.ncl"
load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/contributed.ncl"
load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/shea_util.ncl"
f = addfile("jantest.nc","r")
trend=f->jantrend
sig=f->sig


wks  = gsn_open_wks("eps" ,"re") 
res                       = True     
res at gsnDraw              = True      
res at cnLevelSelectionMode = "ManualLevels"
res at cnMinLevelValF       = -4
res at cnMaxLevelValF       =  4
res at cnLevelSpacingF      =  0.5
res at cnLineLabelInterval  = 1
res at cnSmoothingOn        = True
plot0 = gsn_csm_contour(wks,trend,res)


opt = True
opt at gsnShadeFillType = "pattern"   
opt at gsnShadeHigh =17                     
plota = gsn_csm_contour(wks,sig,opt)   
plota = ShadeGtContour(plota,0.95,17)
overlay(plot0,plota) 
draw(plot0)
frame(wks)



Sincerely, 
Yan
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