[gradsusr] Ensenble Handling in Grads

[Jennifer Adams]

What does your descriptor file look like? What version of GrADS are  
you using?

On Jan 15, 2011, at 7:31 AM, azhar ehsan wrote:

> Hi All,
>
> I have a problem regarding the handling the Ensembles in Grads.
> I have 10 data files like (pos01.dat, pos02.dat, pos03.dat,..,  
> pos10.dat) with same time, X, Y and Z and T definations.  When i try  
> to view this. It is giving me the following error. Seems everything  
> ok, but i dnt know why it is giving this error.
>
> "ga-> open eprcp.ctl
> Scanning description file:  eprcp.ctl
> Data file pos%e.dat is open as file 1
> LON set to 0 360
> LAT set to -87.159 87.159
> LEV set to 925 925
> Time values set: 1871:1:1:0 1871:1:1:0
> E set to 1 1
> ga-> q file
> File 1 : Ensembles handeling
>   Descriptor: eprcp.ctl
>   Binary: pos%e.dat
>   Type = Gridded
>   Xsize = 96  Ysize = 48  Zsize = 1  Tsize = 139  Esize = 10
>   Number of Variables = 1
>      tpr  0  99  Total Precp               [mm/day]
> ga-> q ens
> Ensemble 1 named pos01 has 139 timesteps and begins at 00Z01JAN1871  
> (t=1)
> Ensemble 2 named pos02 has 139 timesteps and begins at 00Z01JAN1871  
> (t=1)
> Ensemble 3 named pos03 has 139 timesteps and begins at 00Z01JAN1871  
> (t=1)
> Ensemble 4 named pos04 has 139 timesteps and begins at 00Z01JAN1871  
> (t=1)
> Ensemble 5 named pos05 has 139 timesteps and begins at 00Z01JAN1871  
> (t=1)
> Ensemble 6 named pos06 has 139 timesteps and begins at 00Z01JAN1871  
> (t=1)
> Ensemble 7 named pos07 has 139 timesteps and begins at 00Z01JAN1871  
> (t=1)
> Ensemble 8 named pos08 has 139 timesteps and begins at 00Z01JAN1871  
> (t=1)
> Ensemble 9 named pos09 has 139 timesteps and begins at 00Z01JAN1871  
> (t=1)
> Ensemble 10 named pos10 has 139 timesteps and begins at 00Z01JAN1871  
> (t=1)
> ga-> set e 5
> E set to 5 5
> ga-> d tpr
> Cannot contour grid - all undefined values "
>
>
> Advance thanks for any suggestion/help.
>
> Regards:
>
> -- 
> Muhammad Azhar Ehsan
> M.Sc. Student
>
> Department of Meteorology
> King Abdulaziz University
> P. O. Box 80234
> Jeddah 21589
> Saudi Arabia
>
> Email:   azhar.ehsan82 at gmail.com
> Mobile:  (+966) 55 1276318
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--
Jennifer M. Adams
IGES/COLA
4041 Powder Mill Road, Suite 302
Calverton, MD 20705
jma at cola.iges.org



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