Re: a question about ncl_convert2nc

Hi Dave,

Thanks for your reply. I normally use ncdump to dump out variables from the
netcdf file to a text file. Subsequently, this text file needs to be read
in using a FORTRAN code for some further calculation. The problem is that
the FORTRAN code could not recognize "_". Is there anyway that I could get
the real _FillValue (1.e+20f) instead of "_" in the text file?

Thanks a lot!

Zhan

On Mon, Oct 8, 2012 at 11:50 AM, David Brown <dbrown@ucar.edu> wrote:

> Hi Zhan,
> I assume you are using ncdump to look at the NetCDF file. If so, you
> should be aware that ncdump always shows values equal to the _FillValue as
> a "_", no matter what the _FillValue is set to.
> -dave
>
> On Oct 8, 2012, at 12:03 PM, Zhan Zhao wrote:
>
> > Dear NCL users,
> >
> > I am trying to use ncl_convert2nc to convert GRIB file (NARR reanalysis
> data) to netcdf format. There seem to be some problem for the "FillValue"
> in the generated netcdf file. The variable description in the file header
> shows that the "FillValue" for missing data is 1.e+20f, however, the
> "FillValue" in the data are shown as "_" in the netcdf file. The command I
> used was: ncl_convert2nc filename
> >
> > Could you please give me any suggestions on how to fix this problem?
> >
> > Thanks a lot!
> >
> > Zhan
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>

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Received on Mon Oct 8 13:01:14 2012