non conventional missing value type problem

Hello

I am working with a netcdf of global drifter data <
http://www.aoml.noaa.gov/phod/dac/dac_meanvel.php>
that appears to have a non-conventional missing value.

The variables are mainly type double, but for some reason they appear to
have coded the missing value as integer type, unless I read this dump
incorrectly:

Variable: f
Type: file
filename: drifter_monthlymeans
path: drifter_monthlymeans.nc
    file global attributes:
       title : drifter_monthlymeans
       description : Climatological Monthly Means of Drifter Data
       version : Version 2.04
       date : Last updated on 24-June-2013
       date2 : File created 24-Jun-2013 13:49:57
       datadate : Climatology updated using data through 31-December-2012
       institution : NOAA/AOML & NOAA/PMEL
       author : Lumpkin and Johnson (2013) J. Geophys. Res.,
doi:10.1002/jgrc.20210
       CreationDate : 2013/06/24 13:53:04
    dimensions:
       Lat = 317
       Lon = 720
       Time = 12
    variables:
       double Lat ( Lat )
          long_name : Latitude (negative = south)
          units : degrees
          valid_min : -73
          valid_max : 85

       double Lon ( Lon )
          long_name : Longitude (negative = west)
          units : degrees
          valid_min : -180
          valid_max : 179.5

       double Time ( Time )
          long_name : Climatological Month (0=mid-Jan, 1=mid-Feb, etc.)
          calendar : noleap
          valid_min : 0
          valid_max : 11

       double U ( Lat, Lon, Time )
          long_name : Zonal Velocity
          units : meters per second
          valid_min : -2.8581
          valid_max : 4.3286
          missing_value : ( 9, 9, 9, ., 9, 9, 9 )

I don't think rewriting the missing value is an option here, as
described in < http://www.ncl.ucar.edu/Support/talk_archives/2011/2628.html>

I tried Dennis' option for turning off default behaviour for missing
values posted here <
http://www.ncl.ucar.edu/Support/talk_archives/2009/1870.html>

NCL's "setfileoption" allows the user to turn off NCL's default behavior
http://www.ncl.ucar.edu/Document/Functions/Built-in/setfileoption.shtml
       setfileoption ("nc", "/MissingToFillValue"/, False) ; turn off
default behavior

but I'm obviously still not solving the problembecause my code still
gives an error on loading
:
;****************
;; load data
;***************
  setfileoption ("nc", "/MissingToFillValue/", False) ; turn off

   f =
addfile("../data/global_drifter_current_climatology/drifter_monthlymeans.nc",
"r")
   names = getfilevarnames(f)
   U = f->U(:,:,:)
   V = f->V(:,:,:)
   SST = f->SST(:,:,:)
   eU = f->eU(:,:,:)
   eV = f->eV(:,:,:)
   eSST = f->eSST(:,:,:)
   N = f->N(:,:)
   Latitude = f->Lat
   Longitude = f->Lon
   Month = f->Time

exit
;******************

Error is:
smc@caiman:~/Dropbox/dynamic_data/projects2013/visualization/ncl$ ncl
map_global_drifter_currents_monthly_climatology.ncl
  Copyright (C) 1995-2012 - All Rights Reserved
  University Corporation for Atmospheric Research
  NCAR Command Language Version 6.1.0
  The use of this software is governed by a License Agreement.
  See http://www.ncl.ucar.edu/ for more details.
warning:["NclFile.c":1657]:FileSetFileOption: /MissingToFillValue/ is
not a recognized file option for format nc
warning:NetOpenFile: MissingToFillValue option set True, but
missing_value attribute and data variable (U) types differ: not adding
virtual _FillValue attribute
warning:NetOpenFile: MissingToFillValue option set True, but
missing_value attribute and data variable (V) types differ: not adding
virtual _FillValue attribute
warning:NetOpenFile: MissingToFillValue option set True, but
missing_value attribute and data variable (SST) types differ: not adding
virtual _FillValue attribute
warning:NetOpenFile: MissingToFillValue option set True, but
missing_value attribute and data variable (eU) types differ: not adding
virtual _FillValue attribute
warning:NetOpenFile: MissingToFillValue option set True, but
missing_value attribute and data variable (eV) types differ: not adding
virtual _FillValue attribute
warning:NetOpenFile: MissingToFillValue option set True, but
missing_value attribute and data variable (eSST) types differ: not
adding virtual _FillValue attribute

OK, so I'm obviously not doing something correctly. Can someone please
point out my error?

Thanks and Best Fishes

Sam

-- 
email signature Sam McClatchie,
Supervisory oceanographer, Fisheries oceanography
Southwest Fisheries Science Center, NOAA,
8901 La Jolla Shores Dr.
La Jolla, CA 92037-1509, U.S.A.
Office: 858 546 7083, Cellular:  858 752 8495
Research home page <http://www.fishocean.info>

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Received on Sat Nov 2 16:48:53 2013