[ncl-talk] areal_avg for masked data

[Geeta Geeta]

Hi all. 
I have Global data of latent heat at 12 different levels. I have to compute the areal average of each layer , for one sector and only over the Ocean area. Accordingly, I masked the land area and plotted the data for each layer. 
It is plotted fine, but when I try to take the areal average of a particular layer and particular sector over the ocean, I run into problems. My output shows me 
1999           7,                   0.5000,-----------------,-9999.90039062    
  (DATE      MONTH    ,  1.0000,                 ,
                                         ,  1.5000,                 ,
                                         ,  2.0000,                 ,
                                         ,  2.5000,                 ,
                                         ,  3.0000,                 ,
                                         ,  3.5000,                 ,
                                         ,  4.0000,                 ,
                                         ,  4.5000,                 ,
                                         ,  5.0000,                 ,
                                         ,  5.5000,                 ,
                                        ,  6.0000,                                                        (layers)                        (areal Average Value)
I am unable to proceed further>>>>. Attaching my script and the figures and output file. when I run this, I get areal_ave = -9999. for all the layers...umber Of Attributes: 10
  longitude :    degrees_east
  latitude :    degrees_north
  comments :    Unknown1 variable comment
  long_name :    latent heat (C/hr)
  units :    
  grid_name :    grid-1
  grid_type :    linear
  time_statistic :    instantaneous
  missing_value :    -9999.9
  _FillValue :    -9999.9


Variable: date_final
Type: string
Total Size: 8 bytes
            1 values
Number of Dimensions: 1
Dimensions and sizes:    [1]
Coordinates: 
(0)    1999    7


Variable: area_avg
Type: float
Total Size: 4 bytes
            1 values
Number of Dimensions: 1
Dimensions and sizes:    [1]
Coordinates: 
Number Of Attributes: 1
  _FillValue :    -9999.9
(0)    -9999.9

Geeta.
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