[gradsusr] Obtaining total values of a dimension on a netCDFfile

[Thiago Veloso]

  Dr. Bernd,
  Thank you very much for this step-by-step guide. Please find attached the resulting figure of the integration. I also defined my own spatial domain to produce the figure (southern Brazil).
  Now the big question is: how to write these results into a netcdf file?
  Best regards,
  Thiago.

--- On Fri, 23/7/10, Becker, Bernd <bernd.becker at metoffice.gov.uk> wrote:

From: Becker, Bernd <bernd.becker at metoffice.gov.uk>
Subject: Re: [gradsusr] Obtaining total values of a dimension on a netCDFfile
To: "GrADS Users Forum" <gradsusr at gradsusr.org>
Date: Friday, 23 July, 2010, 5:37



 
 
 
Ok. 
you are getting there.
 
try:
set t 1
 
d 
sum(data,t=1,t=32)
 
any numbers looking 
familiar?
Cheers,
Bernd.
 




From: gradsusr-bounces at gradsusr.org 
[mailto:gradsusr-bounces at gradsusr.org] On Behalf Of Thiago 
Veloso
Sent: 22 July 2010 18:06
To: GrADS Users 
Forum
Subject: Re: [gradsusr] Obtaining total values of a dimension on 
a netCDFfile




  
  
      Dear Bernd,
      

        Thanks for your reply.
      

        After trying the procedure you suggested I received lots 
      of information on display. Each information set corresponding to a 
      specific day.
      

        For example, setting t 1 3 generates:
      

      
      ga-> set t 1 3
      Time values set: 2009:1:1:0 2009:1:3:0 
      ga-> d cmorph
      Data Type = grid
      Dimensions = 0 1
      I Dimension = 0 to 4949 Linear -0.0363783 0.0727567
      J Dimension = 1 to 1649 Linear -59.9636 0.0727714
      Sizes = 4950 1649 8162550
      Undef value = -9.99e+08
      Undef count = 114789  Valid count = 8047761
      Min, Max = 0 241
      Cmin, cmax, cint = 0 240 20
      Stats[sum,sumsqr,root(sumsqr),n]:     4.20946e+06 
      8.7492e+07 9353.71 8047761
      Stats[(sum,sumsqr,root(sumsqr))/n]:     0.523059 10.8716 
      3.29721
      Stats[(sum,sumsqr,root(sumsqr))/(n-1)]: 0.523059 10.8716 
3.29721
      Stats[(sigma,var)(n)]:     3.25546 10.598
      Stats[(sigma,var)(n-1)]:   3.25546 10.598
      Data Type = grid
      Dimensions = 0 1
      I Dimension = 0 to 4949 Linear -0.0363783 0.0727567
      J Dimension = 1 to 1649 Linear -59.9636 0.0727714
      Sizes = 4950 1649 8162550
      Undef value = -9.99e+08
      Undef count = 89326  Valid count = 8073224
      Min, Max = 0 217
      Cmin, cmax, cint = 0 200 20
      Stats[sum,sumsqr,root(sumsqr),n]:     3.78218e+06 
      7.38863e+07 8595.71 8073224
      Stats[(sum,sumsqr,root(sumsqr))/n]:     0.468485 9.15202 
      3.02523
      Stats[(sum,sumsqr,root(sumsqr))/(n-1)]: 0.468485 9.15202 
3.02523
      Stats[(sigma,var)(n)]:     2.98874 8.93254
      Stats[(sigma,var)(n-1)]:   2.98874 8.93254
      Data Type = grid
      Dimensions = 0 1
      I Dimension = 0 to 4949 Linear -0.0363783 0.0727567
      J Dimension = 1 to 1649 Linear -59.9636 0.0727714
      Sizes = 4950 1649 8162550
      Undef value = -9.99e+08
      Undef count = 177477  Valid count = 7985073
      Min, Max = 0 200
      Cmin, cmax, cint = 0 200 20
      Stats[sum,sumsqr,root(sumsqr),n]:     3.8412e+06 
      9.12816e+07 9554.14 7985073
      Stats[(sum,sumsqr,root(sumsqr))/n]:     0.481048 11.4315 
      3.38105
      Stats[(sum,sumsqr,root(sumsqr))/(n-1)]: 0.481048 11.4315 
3.38106
      Stats[(sigma,var)(n)]:     3.34666 11.2001
      Stats[(sigma,var)(n-1)]:   3.34666 11.2001
      ga-> 
      

        Is this information enough?
      

        Best wishes,
      

        Thiago.
      

--- On Thu, 22/7/10, Becker, Bernd 
      <bernd.becker at metoffice.gov.uk> wrote:

      
From: 
        Becker, Bernd <bernd.becker at metoffice.gov.uk>
Subject: Re: 
        [gradsusr] Obtaining total values of a dimension on a netCDF file
To: 
        "GrADS Users Forum" <gradsusr at gradsusr.org>
Date: Thursday, 22 
        July, 2010, 12:20


        
        sdfopen file.nc
        set gxout stats
         
        set t 1 32
        d var
         
        what does that produce?
         
        Bernd.

        
        
        From: gradsusr-bounces at gradsusr.org 
        [mailto:gradsusr-bounces at gradsusr.org] On Behalf Of Thiago 
        Veloso
Sent: 22 July 2010 15:18
To: 
        gradsusr at gradsusr.org
Subject: [gradsusr] Obtaining total 
        values of a dimension on a netCDF file


        
        
          
          
              Dear GrADS colleagues, 
              

                I am working with a netCDF file which contains 
              precipitation values for 31 days. What I am trying to do is to use 
              NCO to obtain the sum of the "time" dimension (thus, the 31 days), 
              but with no success until the present moment.
              

                Could anybody give some directions?
              

                Best regards,
              

                Thiago.

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