[ncl-talk] How to convert the value of a NetCDF file to zero

[Dave Allured - NOAA Affiliate]

The problem is that Dennis's program did not copy the file global
attributes, which contain part of the georeferencing.  Just add this line
near the top of the program, after the line "print (vNames)":

      copy_VarAtts (f, fout)


On Thu, Jan 25, 2024 at 11:07 AM Ehsan Taghizadeh via ncl-talk <
ncl-talk at mailman.ucar.edu> wrote:

> Dear Setareh,
> I suggest you read the variables from the fout file again. For example, if
> there is a variable named "V10" in fout, you just need to read that
> variable from fout, as follows:
> V10_zero=fout->V10
>
> This V10_zero has the same coordinates as V10 in the original file, but
> its values are zero.
> I hope this is correct.
>
>
> On Thursday, January 25, 2024 at 06:17:12 PM GMT+3:30, Setareh Rahimi via
> ncl-talk <ncl-talk at mailman.ucar.edu> wrote:
>
> Dear Dennis,
> I noticed an issue. When I use the attached script it converts all values
> to zero, but the data is no georefrenced any more. So how can I fix this
> please?
> Thanks in advance.
> Best regards,
>
> S.Rahimi
>
>
> On Sun, Jan 21, 2024 at 18:44 Dennis Shea <shea at ucar.edu> wrote:
>
> Attached is a script that does what you requested.
>
>
> On Sat, Jan 20, 2024 at 6:40 AM Setareh Rahimi via ncl-talk <
> ncl-talk at mailman.ucar.edu> wrote:
>
>
> Dear NCL users,
>
> I have a NetCDF file (attached) that contains some variables. I would like
> to change the values of all variables to zero for all grid points. So how
> can I do this using NCL, please?
>
> This file is an input file for the WRF-Chem model, and I do not want to
> change the format of the file, only want to change the values to zero.
>
> Please kindly advise me in this regard.
>
> Thanks in advance.
> Kind regards,
> --
> S.Rahimi
>
>
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