[ncl-talk] Substitute, not overwrite all variables

[Barry Lynn]

Thank you. Obvious in retrospect, but no less helpful!

Barry

On Fri, Dec 30, 2016 at 8:57 PM, David Brown <dbrown at ucar.edu> wrote:

> You need to change these lines:
>
>
>   if(isfilepresent(filename)) then
>     system("/bin/rm " + filename)
>   end if
>   f = addfile(filename,"c")
>
>
> This is removing the file if it exists and the open a new file. You
> can simply replace these lines with
>
> f = addfile(filename,"w")
>
> which opens an existing file with write access.
>
> Hope that helps.
>  -dave
>
>
>
> On Fri, Dec 30, 2016 at 6:09 AM, Barry Lynn <barry.h.lynn at gmail.com>
> wrote:
> > Hello:
> >
> > I found this wonderful program on an e-mail exchange.
> >
> > I have attached my version.
> >
> > https://www.ncl.ucar.edu/Support/talk_archives/2011/0619.html
> >
> > (how to replace a variable in a variable in an ncl file).
> >
> > However, as set up, this overwrites the old wrfinput_d02, rather than
> just
> > replacing the modified variable.
> >
> > Also, when I read this variable in the new wrfinput_d02.nc file (now
> just
> > three variables), it is missing coordinate information (below), although
> I
> > seem to add this information before writing it.
> >
> > If someone could explain how to replace a single variable, rather than to
> > overwrite the whole file that would be great (and to add coordinate
> > information).
> >
> > Thank you
> >
> >       float L_OBS ( ncl0, ncl1, ncl2 )
> >          lon2d : <ARRAY of 39204 elements>
> >          lat2d : <ARRAY of 39204 elements>
> >          _FillValue : 9.96921e+36
> >
> >       float xlat ( south_north, west_east )
> >          coordinates : XLONG XLAT
> >          stagger :
> >          units : degree_north
> >          description : LATITUDE, SOUTH IS NEGATIVE
> >          MemoryOrder : XY
> >          FieldType : 104
> >
> >
> > --
> > Barry H. Lynn, Ph.D
> > Senior Lecturer,
> > The Institute of the Earth Science,
> > The Hebrew University of Jerusalem,
> > Givat Ram, Jerusalem 91904, Israel
> > Tel: 972 547 231 170
> > Fax: (972)-25662581
> >
> > C.E.O, Weather It Is, LTD
> > Weather and Climate Focus
> > http://weather-it-is.com
> > Jerusalem, Israel
> > Local: 02 930 9525
> > Cell: 054 7 231 170
> > Int-IS: x972 2 930 9525
> > US 914 432 3108
> >
> > _______________________________________________
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> > ncl-talk at ucar.edu
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> >
>



-- 
Barry H. Lynn, Ph.D
Senior Lecturer,
The Institute of the Earth Science,
The Hebrew University of Jerusalem,
Givat Ram, Jerusalem 91904, Israel
Tel: 972 547 231 170
Fax: (972)-25662581

C.E.O, Weather It Is, LTD
Weather and Climate Focus
http://weather-it-is.com
Jerusalem, Israel
Local: 02 930 9525
Cell: 054 7 231 170
Int-IS: x972 2 930 9525
US 914 432 3108
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