[ncl-talk] a question on masking missing values using grey shading or hatch in time-longitude section

[Hui Ding]

Dear Sir or Madam,
 I plotted a longitude-time figure. Please see the attached figure. While
area in the figure is due to missing values in continent. Could you please
show me how to mask the while areas using grey shading or hatch?

I also attach my NCL script and input data. Thank you very much!
Best,
Hui Ding
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