[ncl-talk] gsn_contour_shade

[yang yang]

Dear All:

I would like to plot two shade areas in a diagram using the codes below:

  wspeedfill    = gsn_csm_contour(wks,ptt,wspeed_res)
opt = True
  opt at gsnShadeMid = "grey"
 wspeedfill = gsn_contour_shade(wspeedfill,315.,330.,opt)
draw(wspeedfill)
opt1 = True
opt1 at gsnShadeMid = "grey"
wspeedfill = gsn_contour_shade(wspeedfill,340.,355.,opt1)

However, only one shade area (340.,355.) was plotted. Can you please tell
me how to fix this problem?

Thanks very much!

Regards
Ed
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