[ncl-talk] netcdf TFLAG dimension

[Luo, Chao]

Hi, here is what I did.

---------------------------

begin

fin = addfile(METCRO2D_148x112_20110701,"r")
ncdf      = addfile(out.nc,"c")


global_attnames = getvaratts(fin) ;-- retrieve the global attributes from input file
do i=0,dimsizes(global_attnames)-1
ncdf@$global_attnames(i)$ = fin@$global_attnames(i)$ ;-- write globalattribute to new netcdf file
end do

names    = getfilevarnames(fin); extract all variable names

;do i = 0, dimsizes(names)-1
do i = 0, 1                 ; write out two variable
ncdf->$names(i)$ = fin->$names(i)$
end do

end

--------------------------

But the dimensions of output netcdf file (out.nc) still are:

dimensions:
        TSTEP = UNLIMITED ; // (25 currently)
        DATE-TIME = 2 ;
        LAY = 1 ;
        VAR = 40 ;
        ROW = 112 ;
        COL = 148 ;

The dimensions of output file should be:

dimensions:
        TSTEP = UNLIMITED ; // (25 currently)
        DATE-TIME = 2 ;
        LAY = 1 ;
        VAR = 2 ;
        ROW = 112 ;
        COL = 148 ;
 
I don't know how to change VAR = 40 to VAR = 2 in output file.

Thanks very much,

Chao




----- Original Message -----
From: "Dennis Shea" <shea at ucar.edu>
To: "Chao Luo" <chao.luo at eas.gatech.edu>
Cc: "ncl-talk Talk" <ncl-talk at ucar.edu>
Sent: Thursday, September 17, 2015 1:33:44 PM
Subject: Re: [ncl-talk] netcdf TFLAG dimension

The description provides no information that can be used to help
diagnose the problem, Try again

On Wed, Sep 16, 2015 at 1:29 PM, Luo, Chao <chao.luo at eas.gatech.edu> wrote:
> Hi,
>
> I extracted couple variables from a netcdf file (with 40 variables) and
> write out to a new netcdf file with dimension and TFLAG information. But the
> new file's still has dimension: VAR =40, which is same as the original
> netcdf file. The VAR should be equal to 2 (VAR=2) in new netcdf file. I
> don't know how to change it by NCL.
> Very appreciate any help and suggestions.
>
> Chao
>
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