Re: a question about ncl_convert2nc

You could try using ncl_filedump instead. The formatting is somewhat different from the way that ncdump would look like. The other way would be to write a little NCL script. There are
examples at http://www.ncl.ucar.edu/Applications/o-ascii.shtml.

Another option would be a search and replace operation with a text editor starting with the ncdump output.
 -dave

On Oct 8, 2012, at 1:00 PM, Zhan Zhao wrote:

> 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 13:25:59 2012