Re: created nc files

David and Adam:
    Thank you for your help!
   Lei

On Tue, Jul 14, 2009 at 4:46 PM, David Brown <dbrown_at_ucar.edu> wrote:

>
> FYI, you can delete the attribute directly from the NetCDF file using NCL
> as well:
>
> delete(f->conint@_FillValue)
>
> (assuming the file is open in "w" or "c" mode)
>
> Anytime you create a variable in NCL using 'new', a _FillValue
> (representing the value given to missing data) is created by default.
> You can suppress its creation using:
>
> v = new(6,float,"No_FillValue")
>
> -dave
>
>
> On Jul 14, 2009, at 3:33 PM, Lei wrote:
>
> It works. Thanks. By the way, where does this attribute come from?
> Lei
>
> On Tue, Jul 14, 2009 at 4:22 PM, Adam Phillips <asphilli_at_ucar.edu> wrote:
>
>> Hi Lei,
>> Sure, you can simply delete the attribute from the array before you write
>> the array to a netCDF file:
>> delete(sst@_FillValue)
>>
>> Alternatively, you can remove the _FillValue from an already created
>> netCDF file by using the netCDF operator ncatted:
>> http://nco.sourceforge.net/nco.html#SEC87
>> Adam
>>
>> Lei wrote:
>>
>>> Hi,
>>> Each time I created a new nc file, there is always one attribute
>>> (_FillValue: -999) associated with each parameter. See the following
>>> example:
>>> float conint ( month, lat, lon )
>>> units : mm/day
>>> long_name : prcp anomaly
>>> _FillValue : -999
>>> Is there anyway to get rid of the attribute? Thanks,
>>> Lei
>>>
>>>
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>>>
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>>
>> --
>> --------------------------------------------------------------
>> Adam Phillips asphilli_at_ucar.edu
>> National Center for Atmospheric Research tel: (303) 497-1726
>> ESSL/CGD/CAS fax: (303) 497-1333
>> P.O. Box 3000
>> Boulder, CO 80307-3000 http://www.cgd.ucar.edu/cas/asphilli
>>
>
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Received on Tue Jul 14 2009 - 15:50:53 MDT