Re: how can I print the coordinate information of the array in WRF OUTPUT FILE in NC format ?

You can't use NCL coordinate array syntax ({xx}) when dealing with WRF-ARW data, because this data has two-dimensional lat/lon arrays.

Try using wrf_user_ll_to_ij to get the i,j index values into the part of the array you need:

http://www.ncl.ucar.edu/Document/Functions/WRF_arw/wrf_user_ll_to_ij.shtml

--Mary
 
On Feb 20, 2012, at 8:32 AM, Jie Tang wrote:

> here I want to indict or print the coordinate information of the array in WRF OUTPUT FILE.
> For example:
>
> I have such a wrf with the variables:
> Variable: U
> Type: float
> Total Size: 26680320 bytes
> 6670080 values
> Number of Dimensions: 4
> Dimensions and sizes: [Time | 6] x [bottom_top | 30] x [south_north | 192] x [west_east_stag | 193]
> Coordinates:
> Time: not a coordinate variable
> bottom_top: not a coordinate variable
> south_north: not a coordinate variable
> west_east_stag: not a coordinate variable
> Number of Attributes: 6
> FieldType : 104
> MemoryOrder : XYZ
> description : x-wind component
> units : m s-1
> stagger : X
> coordinates : XLONG_U XLAT_U
>
> I want to print the bottom_top information.
> aa=wrffile->U
> print(aa&bottom_top )
> But the error message said that :
> fatal:No coordinate variable exists for dimension (bottom_top) in variable (aa)
>
> Here how may I to print and modify the information of bottom_top ?
>
>
> --
> TANG Jie
> Email: totangjie@gmail.com
> Tel: 0086-2154896104
> Shanghai Typhoon Institute,China
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Received on Tue Feb 21 12:52:44 2012