Help on coordinate variable

Hi there,
I am trying to create a netcdf file with a variable that is regrided to a
wrf domain. I have problems in assigning the coordinate variables. I got
the error below:

fatal:Coordinate variables must be the same dimension as their dimension
fatal:No coordinate variable exists for dimension (lat2d) in variable (znt)

And here is the ncl script:

lat2d=wrf_file->XLAT
lon2d=wrf_file->XLONG
tmp = rgrid2rcm(lat1d, lon1d, p_znt, lat2d(0,:,:), lon2d(0,:,:))

dimll=dimsizes(lat2d)
nlat=dimll(1)
nlon=dim(2)
znt=new(/1,nlat,nlon/,double)
znt(0,:,:)=tmp

znt!0="time"
znt!1="lat2d"
znt!2="lon2d"

znt&time=0
znt&lat2d=lat2d(0,:,:)
znt&lon2d=lon2d(0,:,:)
....

Thanks!

-- 
*Xin Xi
School of Earth and Atmospheric Sciences
Georgia Institute of Technology
311 Ferst Drive, Atlanta, GA 30332-0340*

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Received on Wed Feb 8 16:34:01 2012