[gradsusr] saving more than one variable in one file

[Mubashar Dogar]

Hi  Sujata,

It's not the issue of tdef. It doesn't make any difference.

Thanks,
Mubashar

On 9/26/12, Sujata Mandke <amin at tropmet.res.in> wrote:
> Hello!
>
>    If you want to write time series of both the variables
>    of 60 times each, then in the ctl file to open
>    newly created data, make following changes:
>
>> tdef 103 linear jan1900 1yr
>
>   change to
>   tdef 60 linear jan1900 1yr
>
>   With this change both variables are defined
>   for time series of 60 times each.
>   Hope this will match newly created variable with
>   that from original data.
> Regards
> Sujata Mandke
> Indian Institute of Tropical Meteorology
> Pune,India.
> -------------------------
>
> ----- Original Message -----
> From: Jennifer Adams <jma at cola.iges.org>
> To: GrADS Users Forum <gradsusr at gradsusr.org>
> Sent: Tue, 25 Sep 2012 20:54:49 +0530 (IST)
> Subject: Re: [gradsusr] saving more than one variable in one file
>
> Use the -ap flag with 'set fwrite' to append to an existing file. Also, it
> is not necessary to define N3 and N4 before displaying them -- why waste the
> memory? Simply change your 'define' to a 'd' and then you can remove the two
> 'd N3' and 'd N4' lines.
> --Jennifer
>
>
> On Sep 25, 2012, at 5:20 AM, Mubashar Dogar wrote:
>
>> Dear GrADS users,
>>
>> I have 2 spatial variables in one file. I wanted to do some operation
>> on each one and wanted to save 2 new variables in a new GrADS file. I
>> am doing some thing as given below:
>>
>> 'open File.ctl'
>> 'set gxout fwrite'
>> 'set fwrite NEW_FILE.dat'
>> t=1                       ********************T=1 is Jan1900 and it is
>> monthly data
>> tmax=60
>> while (t<=tmax)
>> 'set t 't
>> 'define N3=aave(temp,lon=-150,lon=-90,lat=-5,lat=5)'
>> 'define N4=aave(temp,lon=160,lon=210,lat=-5,lat=5)'
>> 'd N3'
>> 'd N4'
>> t=t+1
>> endwhile
>> 'disable fwrite'
>> ********************************
>> As the new variables are a 1-D time series, so my ctl file to open
>> newly written data file is as:
>>
>> dset NEW_FILE.dat
>> title N3 and N4 indices
>> undef -9.99e+08
>> xdef 1 linear 1 1
>> ydef 1 linear 1 1
>> zdef 1 linear 1 1
>> tdef 103 linear jan1900 1yr
>> vars 2
>> N3   0 99  N3 variable
>> N4   0 99  N4 variable
>> endvars
>>
>> It works fine but it looks that the values of both variables are not
>> representing to original values. How can I work with two or more
>> variables in one file?
>>
>> Thanks,
>>
>> Mubashar
>> _______________________________________________
>> gradsusr mailing list
>> gradsusr at gradsusr.org
>> http://gradsusr.org/mailman/listinfo/gradsusr
>
> --
> Jennifer M. Adams
> IGES/COLA
> 4041 Powder Mill Road, Suite 302
> Calverton, MD 20705
> jma at cola.iges.org
>
>
>
>
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>


-- 
Muhammad Mubashar Ahmad Dogar
Scientific Officer (Climatology Section),
Global Change Impact Studies Centre (GCISC),
NCP complex, Quaid-e-Azam University Campus,
Shahdra road, Islamabad, Pakistan.
Tel:  +92519230226
Mob:+923315144169
email: mubashardogar at yahoo.com
          mubashar.ahmad at gcisc.org.pk