[gradsusr] Error Message

[Clark, Douglas B.]

Sudev,

The problem (I think) is that your current time dimensions settings do not overlap with the times available in your file #2.

Your second file has 12 times but the line in the error message
"Grid limits of request:  X = 35 111  Y = 40 88  Z = 1 1  T = -119987 -119987  E = 1 1"
indicates that the time you have selected from the SST file is before the start of the surface current data (t=-119987).

You can override the current time dimension settings (i.e. choose a particular time) by using, e.g.
d u.2(t=1);v.2(t=1)
to plot the first time of surface current data. You can choose any of the 12 times available in this way.

Doug



From: gradsusr-bounces at gradsusr.org [mailto:gradsusr-bounces at gradsusr.org] On Behalf Of Sudev Das M P
Sent: 25 July 2011 11:42
To: GrADS Users Forum
Subject: [gradsusr] Error Message

Hai,

I want to plot surface current above sst. For this I am using Argo sst data and
Oscar surface current data. The details of this files are given below:
----------------------------------------------------------------------------------------
ga-> q file 1
File 1 : 1x1 Monthly gridded climatology on Standard Levels
  Descriptor: Gr_clm_temp_lev_0_2000m.nc
  Binary: Gr_clm_temp_lev_0_2000m.nc
  Type = Gridded
  Xsize = 360  Ysize = 180  Zsize = 27  Tsize = 12  Esize = 1
  Number of Variables = 1
     temp  27  t,z,y,x  argo temperature (degc)
ga-> q file 2
File 2 : OSCAR Surface current data climatology 2003-2010 averaged
  Descriptor: oscar2003_2010clim.ctl
  Binary: oscar2003_2010clim.bin
  Type = Gridded
  Xsize = 360  Ysize = 120  Zsize = 1  Tsize = 12  Esize = 1
  Number of Variables = 2
     u  1  99  zonal velocity component
     v  1  99  meridional velocity component
-------------------------------------------------------------------------------------------

I plotted the sst , but when I am trying to plot the surface current above sst, I am getting
the following warning message. 
--------------------------------------------------------------------------------------------
........................................
...........................................
ga-> d u.2;v.2
Data Request Warning:  Request is completely outside file limits
  Entire grid contents are set to missing data 
  Grid limits of file:     X = 1 360  Y = 1 120  Z = 1 1  T = 1 12  E = 1 1 
  Grid limits of request:  X = 35 111  Y = 40 88  Z = 1 1  T = -119987 -119987  E = 1 1 
  Warning issued for variable = u.2
Data Request Warning:  Request is completely outside file limits
  Entire grid contents are set to missing data 
  Grid limits of file:     X = 1 360  Y = 1 120  Z = 1 1  T = 1 12  E = 1 1 
  Grid limits of request:  X = 35 111  Y = 40 88  Z = 1 1  T = -119987 -119987  E = 1 1 
  Warning issued for variable = v.2
Cannot draw vectors/barbs -- U field all undefined
----------------------------------------------------------------------------------------------
Please tell me how to solve this.

Thanks,
sudev


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