[ncl-talk] missing value

[Debasish Hazra]

Hi,
I am not able to fix missing value as it seems to be incorrect.

         printVarSummary(sat_rain)
          printMinMax(sat_rain,0)
 which shows :
Variable: sat_rain
Type: float
Total Size: 506661120 bytes
            126665280 values
Number of Dimensions: 3
Dimensions and sizes:   [time | 122] x [lat | 721] x [lon | 1440]
Coordinates:
            ttime: [20150601..20150930]
            lat: [ -90..  90]
            lon: [-180..179.75]
Number Of Attributes: 13
  time :        1496275200
  units :       mm
  long_name :  SNIP
.......
  missing_value :       -9999.9
  _FillValue :  -9999.9
(0)     Daily accumulated precipitation (combined microwave-IR) estimate -
Late Run (mm) : min=-1.88301e-12   max=595.349

To fix the minumum value I assigned :
          sat_fix=sat_rain
          sat_min = min(sat_rain)
           printVarSummary(sat_fix)
          sat_fix at _FillValue = sat_min
          printVarSummary(sat_fix)
          printMinMax(sat_fix,0)
But, it did not change minimum value much : Daily accumulated precipitation
(combined microwave-IR) estimate - Late Run (mm) : min=-1.42511e-12
max=595.349

  num_missing_orig = num(ismissing(sat_rain))
  num_missing_fix  = num(ismissing(sat_fix))
  print

======================================================================
(0)     Number of original values that are equal to the missing value as
(0)       defined on the file: 29088262
(0)     Number of fixed values that are missing: 29088263
(0)
======================================================================

So, when I am using that variable against model output for RMSE , I am
getting warnings :
warning:dim_rmsd_n: 227187 rightmost sections of one or both of the input
arrays contained all missing values.

Any help on how to correct that is appreciated. I uploaded one input file
at ftp, if that helps.
Thanks
Debasish
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.ucar.edu/pipermail/ncl-talk/attachments/20181204/47b2790e/attachment.html>