[gradsusr] scale factor

[krishnamohan]

Hai Cellyn,

*scale_factor* - If present for a variable, the data are to be multiplied by
this factor after the data are read by the application that accesses the
data

*add_offset* - If present for a variable, this number is to be added to the
data after it is read by the application that accesses the data. If both
scale_factor and add_offset attributes are present, the data are first
scaled before the offset is added. The attributes scale_factor and
add_offset can be used together to provide simple data compression to store
low-resolution floating-point data as small integers in a netCDF file.

see http://ferret.wrc.noaa.gov/noaa_coop/coop_cdf_profile.html for more
details

-- 
Krishnamohan.K.S
Junior Research Fellow
Department Of Atmospheric Sciences
Cochin University of Science and Technology
Cochin,India



On Mon, Oct 18, 2010 at 8:03 AM, cellyn lee <cellyn_lee53 at yahoo.com> wrote:

>   Hi,
>
> Anybody know what is scale factor and offset in a netcdf file? and how to
> determine when I want to write a netcdf file?
> Thanks.
>
>
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