Dimension Error: What does it mean???

[Mald MM5]

Hi there,

When I do 'set x 36' it still does the same giving me the same error:

ga-> set X 36
LON set to 73.542 73.542
ga-> d w
Data Request Error: Invalid grid coordinates
  World coordinates convert to non-integer grid coordinates
    Variable = w  Dimension = 0
  Error ocurred at column 1
DISPLAY error:  Invalid expression
  Expression = w

my 'q dims' now is:
ga-> q dims
Default file number is: 1
X is fixed     Lon = 73.542  X = 36.0016
Y is fixed     Lat = 1.8964  Y = 63
Z is fixed     Lev = 1000  Z = 2
T is varying   Time = 18Z11JAN2006 to 18Z12JAN2006  T = 1 to 25

For some reason even though I do a 'set x 36' it takes x=36.0016 not as a
whole integer...is there anything to do with the version am using..Am using
version 1.8SL11

Thanks
Mald


On Mon, Nov 10, 2008 at 5:47 PM, Jennifer Adams <jma at cola.iges.org> wrote:

>
> On Nov 9, 2008, at 11:59 PM, Mald MM5 wrote:
>
> Hi there,
>
> I am trying to generate a time-series plot at a single point from a WRF
> output file. The grid dimensins are X,Y=112  points and Z is 32 levels.
> After opening the file, "q dims" gives the following.
>
> ga-> q dims
> Default file number is: 1
> X is varying Lon = 73.465 to 73.7092 X = 1.00002 to 112.001
> Y is varying Lat = 1.76 to 2.0042 Y = 1.00002 to 112
>
> Z is fixed Lev = 0.01 Z = 1
>
> T is fixed Time = 18Z11JAN2006 T = 1
>
> Then I set the environment to a single point. Now the "q dims" give:
>
> ga-> q dims
> Default file number is: 1
> X is fixed Lon = 73.542 X = 36.0016
> Y is fixed Lat = 1.8964 Y = 63
> Z is fixed Lev = 0.015 Z = 2
> T is varying Time = 18Z11JAN2006 to 18Z12JAN2006 T = 1 to 25
>
> Then I issued the command to get the vertical velocity time series as "d w"
> and it gives:
>
> ga-> d w
> Data Request Error: Invalid grid coordinates
>   World coordinates convert to non-integer grid coordinates
>   Variable = w Dimension = 0
>
> Dimension 0 is X ... and your longitude value of 73.542 resolves to a grid
> coordinate that is not an integer: 36.0016. If you 'set x 36' and try again,
> it should be fine.
> --Jennifer
>
>
>   Error ocurred at column 1
> DISPLAY error: Invalid expression
>   Expression = w
>
> Variable w is present in when I do a "q file" and I can plot the w field on
> an XY plane for any time, which means no problem with the field.
>
> I had the same done for my coarser grid with no probelm where the coarser
> grid had 90x90 points. What does this error means and how do I fix this
>
> Thank you
>
>
> --
> Jennifer M. Adams
> IGES/COLA
> 4041 Powder Mill Road, Suite 302
> Calverton, MD 20705
> jma at cola.iges.org
>
>
>
>
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